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1
Fawaid, E. S. A., L I Sari, C Pujiastuti, N K Erliyanti, A D Priyanto e E A Saputro. "Aplikasi Portable Brix Meter untuk Perhitungan Indeks Bias Minyak Atsiri Daun Jambu Kristal". Biomedical and Mechanical Engineering Journal (BIOMEJ) 1, n. 1 (14 aprile 2021): 4. http://dx.doi.org/10.33005/biomej.v1i1.24.
Testo completoAbstract (sommario):
Penentuan indeks bias minyak daun jambu kristal dilakukan dengan menggunakan Portable Brix Meter. Daun jambu kristal diekstraksi dengan bantuan gelombang mikro dengan ukuran partikel 60 mesh selama 2 ; 2,5 ; 3 ; 3,5 ; dan 4 jam. Portable Brix Meter digunakan untuk mengetahui konsentrasi minyak daun jambu kristal yang dinyatakan dalam %Brix. Besarnya nilai %Brix ini sebanding dengan indeks biasnya. Semakin besar nilai %Brix maka akan semakin besar pula indeks bias yang diperoleh. Korelasi antara %Brix minyak daun jambu C dengan indeks bias dinyatakan dengan persamaan n = 0,0026C + 1,2859. Indeks bias minyak daun jambu kristal dapat ditentukan dari nilai %Brix.
2
Giammarco, Melania, Matteo Chincarini, Isa Fusaro, Anna Chiara Manetta, Alberto Contri, Alessia Gloria, Lydia Lanzoni, Ludovica Maria Eugenia Mammi, Nicola Ferri e Giorgio Vignola. "Evaluation of Brix Refractometry to Estimate Immunoglobulin G Content in Buffalo Colostrum and Neonatal Calf Serum". Animals 11, n. 9 (6 settembre 2021): 2616. http://dx.doi.org/10.3390/ani11092616.
Testo completoAbstract (sommario):
Brix refractometry has been widely demonstrated to be a useful tool for monitoring colostrum management program and passive immunity transfer (PIT) in Bovines, but its suitability has never been verified in Buffalo. Therefore, the objective of this study was to evaluate the utility of a simple and rapid tool such as a digital Brix refractometer to estimate colostrum quality and for evaluating the success of passive transfer of immunoglobulin G (IgG) in Buffalo calves. The optimal cut points levels for Brix Refractometry for distinguishing good- and poor-quality colostrum and for assessing the adequacy of passive immunity transfer in calves were determined. For this aim, 26 first-milking maternal colostrum (MC) were collected from first-calf heifers. Blood samples were obtained from their calves at birth (T0) and 72 hours after (T3). Colostrum and Serum IgG content were determined by indirect enzyme-linked immunosorbent assay (ELISA), whereas total protein (TP, g/dL) and percentage Brix (%Brix) by means of a digital Brix refractometer. The mean colostrum IgG was 64.9 ± 29.3 mg/mL. The mean serum %Brix at T3 was 9.6 ± 0.9 %. The mean serum IgG content at T3 was 11.1 ± 2.0 mg/mL. Pearson’s correlation coefficient (rp) was determined between Brix and ELISA measurements: colostrum %Brix showed a significant correlation with serum %Brix (rp = 0.82, p < 0.001); serum %Brix was highly correlated with serum TP (STP, g/dL) (rp = 0.98, p < 0.001) and serum IgG (mg/mL) (rp = 0.85, p < 0.001). A cut point of 18% Brix to estimate samples of MC ≥ 50 mg/mL from first-calf heifers was more appropriate for the buffalo. A cut point of 8.4% Brix resulted in the greatest percentage of calf serum samples being correctly classified. Based on our findings, a digital Brix refractometer could be a useful tool to monitor colostrum quality and to estimate PIT in Buffalo calves.
3
Minnaar, Dr Phillip, Marieta Van Der Rijst e Kobus Hunter. "Grapevine row orientation, vintage and grape ripeness effect on anthocyanins, flavan-3-ols, flavonols and phenolic acids: I. <i>Vitis vinifera</i> L. cv. Syrah grapes". OENO One 56, n. 1 (25 marzo 2022): 275–93. http://dx.doi.org/10.20870/oeno-one.2022.56.1.4857.
Testo completoAbstract (sommario):
Phenolic concentrations are affected by environmental factors and grape cultivar, as well as viticultural practices, which should be considered when a specific phenolic profile is intended. The effect of microclimate induced by row orientation on phenolic compounds of Vitis vinifera L. cv. Syrah/101-14 Mgt grapes was investigated. Grapes were harvested from four vintages at 22 °Brix, 24 °Brix and 26 °Brix from N-S, E-W, NE-SW and NW-SE orientated grapevine rows. Phenolics were quantified in freeze-dried grape skins using an HPLC method. A vintage effect was only evident for specific individual phenolics for the four vintages. Grapes from NE-SW rows at 22 °Brix had the highest total flavonols and anthocyanins. Catechin was highest in grapes from N-S rows at 24 °Brix, whereas total phenolic acids, caffeic acid and total flavonols were highest from NW-SE rows at 24 °Brix and 26 °Brix. Isoquercetin was highest from NE-SW rows at 22 °Brix and 26 °Brix, whereas kaempferol and quercitrin were highest from E-W rows at 24 °Brix. The majority of phenolics was highest from NW-SE rows at 24 °Brix and 26 °Brix. The results indicate that row orientation affects phenolic development in Syrah grapes, but that vintage has a limited effect on phenolics. Light induced in the fruit zone positively affected the grape phenolic development of NE-SW rows at 22 °Brix and that of NW-SE rows at 24 °Brix and 26 °Brix. However, it is unlikely that a single index can be applied to all growing conditions and grape cultivars. Rows that allow moderate radiation intensity in the canopy (i.e., NE-SW and NW-SE during the day) seem more favourable for the development of phenolics than N-S and E-W rows. The light and berry temperature conditions in the fruit zone resulting from row orientation have the potential for widening the range of Syrah wine styles. In practice, a desirable row orientation may not be applicable to all environments. Management of the fruit zone remains an option for increasing or decreasing grape light exposure, irrespective of row orientation.
4
Killick, Rachel. "Portraits contemporains, Michel Brix". Modern Language Review 105, n. 2 (2010): 563–64. http://dx.doi.org/10.1353/mlr.2010.0230.
Testo completo
5
AKKÖSE, Mehmet, e Ceyhan ÖZBEYAZ. "An Assessment of the Accuracy of Digital and Optical Brix Refractometers for Estimating Passive Immunity in Beef Calves". Livestock Studies 62, n. 2 (29 dicembre 2022): 92–100. http://dx.doi.org/10.46897/livestockstudies.1222935.
Testo completo
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Nunes, José Airton Rodrigues, Francisco Ferreira Santana, Regina Lúcia Ferreira Gomes, Ângela Celis de Almeida Lopes, Maria Marlúcia Gomes Pereira e Edson Basílio Soares. "Stratified mass selection of promising Spondias mombin clones in a commercial crop". Crop Breeding and Applied Biotechnology 11, n. 2 (giugno 2011): 141–48. http://dx.doi.org/10.1590/s1984-70332011000200006.
Testo completoAbstract (sommario):
This study aimed to estimate genetic parameters and identify promising clones of Spondias mombin in ungrafted commercial crop by stratified mass selection, based on the average of two harvests, using mixed models. The base population growing on a private farm in Teresina/PI comprised 82 plants, which were evaluated in the growing seasons 2008 and 2009. Total titratable acidity (TTA), total soluble solids (Brix), Brix/TTA, fruit weight (FW), seed weight (SW), pulp yield (PuY), and processing yield (PrY) were measured. Significant genetic variation among plants was detected for all traits. The coefficients of repeatability were 0.97 (TTA), 0.39 (Brix), 0.86 (Brix/TTA), 0.84 (FW), 0.82 (SW), 0.35 (PuY), and 0.39 (PrY). The chemical were generally not correlated with the physical fruit traits. Ranking by predicted phenotypic values associated with PrY and Brix/TTA identified nine promising plants (PrY>6.9% and Brix/TTA>10).
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Rahman, Md Mizanur, Md Miaruddin, MG Ferdous Chowdhury, Md Hafizul Haque Khan e Md Muzahid-E. Rahman. "Preservation of Jackfruit (Artocarpus heterophyllus) by Osmotic Dehydration". Bangladesh Journal of Agricultural Research 37, n. 1 (11 luglio 2012): 67–75. http://dx.doi.org/10.3329/bjar.v37i1.11178.
Testo completoAbstract (sommario):
Preservation of jackfruit (Artocarpus heterophyllus) by osmotic dehydration method has been standardized. Four treatments of sugar concentration viz. 35°:, 40°:, 45°:, and 50°: Brix were used for osmotic dehydration. After osmosis of the jackfruit slices in the sugar solutions these were laid on the cabinet drier for dehydration. After osmotic dehydration, the products were packed in high density polyethylene bags and stored in ambient temperature for a period of 8 months. The physico-chemical properties and the microbiological changes of the products were evaluated and a taste panel evaluated the organoleptic quality of the products during the storage period. Minimum microbial count was recorded for osmosis in 50°: Brix sugar solution followed by 45°: Brix sugar solution. The retention of vitamin A (ß- carotene), vitamin C, total acid and total sugar was also better for osmosis in 45°: Brix sugar solution followed by 50°: Brix sugar solution. The product of 45°: Brix solution when stored 8 months at room temperature secured highest score in organoleptic evaluation and was ranked "like moderately" followed by the product of 50°: Brix solution. Considering the overall acceptance of sensory evaluations, retention of nutritional quality and quantity of sugar needed, the osmotic dehydrated jackfruit prepared by 45°: Brix sugar solution could be selected for commercial processing.DOI: http://dx.doi.org/10.3329/bjar.v37i1.11178Bangladesh J. Agril. Res. 37(1): 67-75, March 2012
8
Illés, Árpád, Atala Szabó, Seyed Mohammad Nasir Mousavi, Csaba Bojtor, Attila Vad, Endre Harsányi e Lúcia Sinka. "The Influence of Precision Dripping Irrigation System on the Phenology and Yield Indices of Sweet Maize Hybrids". Water 14, n. 16 (12 agosto 2022): 2480. http://dx.doi.org/10.3390/w14162480.
Testo completoAbstract (sommario):
Sweet maize is an annual plant that is extremely useful and economical for planting and harvesting. However, maize stands are damaged quickly in the case of nutrient and water deficiency. This research was carried out under dripping irrigation conditions and control plots without irrigation, involving seven different maize hybrids. The obtained results showed no existing variation in the dry matter content of cob (DMC) between the irrigated and non-irrigated treatments. Correlation analysis showed that increasing DMC causes decreasing moisture content of cob (MC) of sweet maize with irrigated and non-irrigated treatments. DMC and MC are important factors in the yield index on irrigation treatments. Biplots showed that the Dessert R72 (10.82) hybrid had maximum yield and effect on Brix/Abbe and Brix/Atago Pal-1, while the Messenger hybrids (42.96) had maximum effect on MC. It was also shown that DMC and MC are important factors in the yield index on irrigation treatments on hybrids. The Noa (37.97) and Honey hybrids (27.88) had minimum effect and performance on non-irrigation and irrigation treatments. The Messenger (11.25) and SF1379 hybrids (10.5) had a maximum performance on Brix Abbe and Brix Pal in the irrigation treatment and Dessert R78 (13.5), the Messenger hybrid (11.8) had a maximum performance on Brix/Abbe and Brix/Atago Pal-1 in non-irrigation treatment. The Dessert R78 (13.5) is the best-performing hybrid in terms of the yield of Brix/Abbe and Brix/Atago Pal-1 in the performed irrigation treatments.
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Aguirre Zaquinaula, Irma Rumela. "Características Fisicoquímicas y Sensoriales del Néctar de Cocona (Solanum sessiliflorum Dunal) con Extracto de Stevia (Stevia rebaudiana Bertoni)". Revista Científica Pakamuros 5, n. 1 (21 dicembre 2017): 15. http://dx.doi.org/10.37787/pakamuros-unj.v5i1.46.
Testo completoAbstract (sommario):
Para evaluar el efecto de la concentración de extracto de Stevia rebaudiana Bertoni y sacarosa sobre las características fisicoquímicas y sensoriales de néctar de cocona. Se estudió siete tratamientos con tres concentraciones de stevia y cuatro de sacarosa. El tratamiento, con 0.3% extracto de stevia tuvo 6.47° Brix de sólidos solubles, el segundo con 0.5% de extracto de stevia, tuvo 6.58° Brix de sólidos solubles y el tercer tratamiento con 0.7% de extracto de stevia, tuvo 6.70° Brix contenido de sólidos solubles, el cuarto con 0.3% de concentración de sacarosa tuvo 14° Brix de sólidos solubles, el quinto tratamiento con 0.5% de concentración de sacarosa tuvo 16° Brix de sólidos solubles, el sexto con 0.7% de concentración de sacarosa tuvo 18° Brix de sólidos solubles, el séptimo tratamiento con 0.0 % de concentración de sacarosa tuvo 5° Brix de sólidos solubles. Los resultados se analizaron con la prueba de Friedman determinándose que no existe efecto de la proporción del extracto de stevia y concentración de sacarosa sobre las características sensoriales del néctar de cocona (significancia de 5%). Se realizó la prueba de Duncan (α=0.05). Los tratamientos con 0.3%, 0.5% y 0.7% de extracto de stevia y concentración de sacarosa, así como 0.0% de concentración de sacarosa difieren significativamente en sus valores de pH y acidez. En cuanto a los grados °Brix, los siete tratamientos difieren significativamente. Los mejores tratamientos fueron: S3 con 0.7% de extracto de stevia y S6 con extracto de sacarosa.
10
Maraphum, Kanvisit, Khwantri Saengprachatanarug, Kittipon Aparatana, Yoshinari Izumikawa e Eizo Taira. "Spatial mapping of Brix and moisture content in sugarcane stalk using hyperspectral imaging". Journal of Near Infrared Spectroscopy 28, n. 4 (27 febbraio 2020): 167–74. http://dx.doi.org/10.1177/0967033520905370.
Testo completoAbstract (sommario):
Hyperspectral imaging is a powerful technique that can rapidly, accurately, and non-destructively determine the quality of agricultural products. In this study, a hyperspectral imaging system has been developed to evaluate and visualize the Brix values and moisture contents in sugarcane stalks to be used as a tool for breeding programmes. After extracting the spectral data via ENVI coding, data in the wavelength range of 450–950 nm were used to generate prediction models for Brix and moisture content via partial least squares regression. The coefficients of determination of the predictive models for Brix and moisture content were found to be 0.70 and 0.68, respectively. The root mean square errors of cross-validation were 1.28° for Brix and 1.49% for moisture content, and the performance to deviation ratios were 1.71 and 1.61, respectively. The models were applied to each pixel of the hypercube data in order to determine the distributions of Brix and moisture content within the sugarcane stalks. Both distribution mappings indicated that the Brix and the moisture content level were lower in the internode regions. The results demonstrated the feasibility of using hyperspectral imaging to visualize Brix and moisture content in sugarcane stalks. The developed method has potential applications in farming management and also in breeding programs.
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Nichols, M. A. "TOWARDS 10 T/HA BRIX". Acta Horticulturae, n. 724 (novembre 2006): 217–23. http://dx.doi.org/10.17660/actahortic.2006.724.27.
Testo completo
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Engfer, Roland, e Helmut Frank. "Peter Brix zum 70. Geburtstag". Physik Journal 44, n. 12 (dicembre 1988): 463. http://dx.doi.org/10.1002/phbl.19880441209.
Testo completo
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Pechova, A., S. Slosarkova, S. Stanek, E. Nejedla e P. Fleischer. "Evaluation of colostrum quality in the Czech Republic using radial immunodiffusion and different types of refractometers". Veterinární Medicína 64, No. 02 (19 febbraio 2019): 51–59. http://dx.doi.org/10.17221/122/2018-vetmed.
Testo completoAbstract (sommario):
The objectives of this study were to determine the immunoglobulin G concentration of colostrum in Czech dairy cows, to compare refractometer results with results achieved using the radial immunodiffusion method and to evaluate the reliability of three types of refractometers and recommend the best solution for the evaluation of colostrum quality. Colostrum samples (n = 1522) were collected from 38 herds between 2015 and 2017. The immunological quality of colostrum was estimated using Brix refractometers (optical, simple digital, digital Misco) and compared with the immunoglobulin G concentration assessed using radial immunodiffusion. We found high variability in the quality of colostrum. The minimum, maximum and median of individual measurements were the following: radial immunodiffusion immunoglobulin G – 5.2, 199.1, 76.9 g/l; optical refractometer – 9.5, 32.0, 23.1% Brix; simple digital refractometer – 5.4, 35.0, 19.1% Brix; digital refractometer Misco – 9.8, 37.4, 23.2% Brix. On the basis of immunoglobulin G concentration assessed using radial immunodiffusion, 20.9% of colostrum samples were of low quality (immunoglobulin G < 50 g/l). The Spearman correlation coefficients between radial immunodiffusion and the Brix refractometer readings were 0.62–0.67 (P < 0.001) according to the type of refractometer. The cut-off evaluation of the readings from optical and Misco digital refractometers both showed 20% Brix, with sensitivities of 89.4% and 88.2%, specificities of 73.2% and 74.5% and accuracies of 86.0% and 85.4%, respectively. The cut-off level for the simple digital refractometer showed 17% Brix with a sensitivity of 77.5%, specificity of 80.4% and an insufficient accuracy of 78.1%. For optical and Misco refractometers we recommend the use of two cut-off levels for the evaluation of colostrum: 23% Brix for the selection of good quality colostrum suitable for freezing and 19% Brix to discard poor quality colostrum. The different cut-off levels obtained by measuring with different types of refractometers indicate the need to check the quality of the instruments prior to their use in practice and, where appropriate, to determine their cut-off levels by comparison with results obtained using the reference method.
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P, Mitra. "Effect of Sucrose Content (0brix) and Different Flavors on Physical, Mechanical and Sensorial Properties of Ginger Candy". Food Science & Nutrition Technology 4, n. 2 (14 marzo 2019): 1–11. http://dx.doi.org/10.23880/fsnt-16000177.
Testo completoAbstract (sommario):
The objectives of this study were to develop value-added low sugar ginger candy based on physical, mechanical and sensorial properties of ginger candy, to improve sensorial properties using different flavors and to investigate the effectiveness of low-density polyethylene (LDPE) and polypropylene (PP) bags to maintain the moisture content of ginger candy during storage. Ginger (Zingiber officinale) is potential against many diseases and infections. Gingers can be converted to ready-to-eat products to increase their utilization and economic value using suitable processing techniques. Due to sharp spicy flavor, pungent aroma and short shelf-life there are few ready-to-eat ginger products available in the market. In this study, ginger candy was developed by dipping ginger slices (cubes) in 65°Brix, 70°Brix and 75°Brix sucrose solutions for osmotic drying followed by hot air drying at 60℃ for 16 hours. The physical properties (moisture content, density and color), mechanical properties (hardness, gumminess, cohesiveness, springiness and chewiness) and sensory properties (appearance, texture. sweetness and overall acceptability) of three different (°Brix) ginger candies were determined to develop the desired ginger candy. The physical, mechanical and sensory properties of 65°Brix, 70°Brix and 75°Brix ginger candy revealed that 70°Brix ginger candy sample was optimum sugar content and was most desired ginger candy. The vanilla and cinnamon flavored candies were developed using the optimum sugar content (70°Brix) and the sensory analysis of the flavored ginger candy was performed to compare the flavor preference. The flavor sensory results indicated that the vanilla flavored ginger candy was more acceptable than the cinnamon flavored ginger candy. All ginger candy samples packed in LDPE and PP achieved equilibrium moisture content at the same time. But the moisture content of ginger candy in LDPE was lower than the moisture content of ginger candy in PP during storage. This result indicated that the shelf-life of ginger candy can be longer in LDPE compared to PP. The findings of this study will be beneficial for the commercial development of low sugar flavored ginger candy.
15
Spetriani, Spetriani. "PENGARUH KONSENTRASI DAN SUHU LARUTAN GULA PADA PROSES DEHIDRASI OSMOTIK BUAH NAGA (Hylocereus sp.)". Pro Food 5, n. 1 (31 maggio 2019): 440. http://dx.doi.org/10.29303/profood.v5i1.93.
Testo completoAbstract (sommario):
ABSTRACTOsmotic dehydration is a water removing process that carried out on a object by immersing the object into an hyper-tonic (osmotic) solution. The process is commonly applied on pre-drying of fruit. The purpose of this research is to investigate the effect of concentration and temperature of osmotic solution on moisture content change, total dissolved solids change and to determine of water diffusion coefficient and solid diffusion coefficient during the process of osmotic dehydration of dragon fruit. Factorial design was used with 2 factors, each consisting of 3 levels with 3 replication. The treatment on this research are : solution consentration of 30 °Brix, 50 °Brix, and 70 °Brix and solution temperature of 30 °C, 40 °C, and 50 °C were applied to this research. The osmotic dehydration process lasts for 8 hours. Initial moisture content of dragon fruit used for the research between 511.17-665.97 (% db). Moisture and solid diffusivities were in the range of 2.810 x 10-8 m²/s - 7.003 x 10-8 m²/s and 0.973 x 10-8 m²/s until 4.734 x 10-8 m²/s. The activation energy for diffusion of water to the concentration of 30 °Brix, 50 °Brix, and 70 °Brix respectively is 9.963 kJ/mol, 3.249 kJ/mol, and 5.372 kJ/mol. While the activation energy for diffusion of solids is 24.946 kJ/mol, 8.908 kJ/mol, and 27.343 kJ/mol. Keywords: dragon fruit, moisture diffusivity, osmotic dehydration, solid diffusivity
ABSTRAK
Dehidrasi osmotik adalah suatu proses pengeluaran air yang dilakukan terhadap suatu bahan dengan cara merendam bahan tersebut ke dalam suatu larutan hipertonik. Proses ini pada umumnya diaplikasikan untuk pra-pengeringan buah-buahan. Tujuan penelitian ini adalah untuk mengkaji pengaruh perlakuan konsentrasi dan suhu terhadap perubahan kadar air, perubahan total padatan terlarut dan untuk menentukan nilai koefisien difusi air dan difusi padatan selama proses dehidrasi osmotik pada buah naga. Digunakan rancangan faktorial dengan 2 faktor yang masing-masing terdiri atas 3 taraf dengan 3 kali ulangan. Perlakuan yang digunakan pada penelitian ini adalah variasi konsentrasi larutan 30 °Brix, 50 °Brix, dan 70 °Brix dan suhu larutan 30 °C, 40 °C, dan 50 °C. Proses dehidrasi osmotik berlangsung selama 8 jam. Kadar air awal buah naga yang digunakan untuk penelitian berkisar antara 511,17-665,97 (%db). Nilai difusivitas air antara 2,810 x 10-8 m²/s – 7,003 x 10-8 m²/s dan difusivitas padatan antara 0,973 x 10-8 m²/s - 4,734 x 10-8 m²/s. Energi aktivasi untuk difusi air untuk konsentrasi 30 °Brix, 50 °Brix, dan 70 °Brix secara berurutan adalah 9,963 kJ/mol, 3,249 kJ/mol, dan 5,372 kJ/mol. Energi aktivasi untuk difusi padatan adalah 24,946 kJ/mol, 8,908 kJ/mol, dan 27,343 kJ/mol.
Kata kunci: buah naga, dehidrasi osmotik, difusivitas air, difusivitas padatan
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Wibawa, Rentang Fajar Cakra, Trikoesoemaningtyas e Desta Wirnas. "Interaksi Genotipe x Lingkungan pada Karakter dan Komponen Hasil Galur-galur Sorgum IPB". Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 49, n. 1 (30 aprile 2021): 37–44. http://dx.doi.org/10.24831/jai.v49i1.33668.
Testo completoAbstract (sommario):
Sorgum (Sorghum bicolor (L.) Moench) merupakan tanaman multiguna yang prospektif untuk dikembangkan di Indonesia sebagai sumber pangan, pakan dan bioenergi. Nilai Brix pada nira batang dan karakter malai pada sorgum merupakan karakter hasil yang perlu diperhatikan dalam perakitan varietas sorgum multiguna. Penelitian ini bertujuan untuk memperoleh informasi keragaman nilai Brix pada nira batang dan karakter malai serta komponen hasil dari galur-galur sorgum multiguna IPB dan responnya terhadap perbedaan kondisi lingkungan. Materi genetik yang digunakan adalah 16 galur sorgum generasi F7 hasil seleksi pedigree dan bulk secara terpisah dari tiga populasi hasil persilangan dan 4 varietas sorgum nasional, ditanam menggunakan rancangan acak kelompok di dua kondisi lingkungan yaitu musim kemarau tahun 2019 dan musim hujan tahun 2020. Hasil penelitian menunjukkan karakter hasil yaitu bobot biji per malai dan nilai Brix pada nira batang selain dipengaruhi oleh genotipe dan lingkungan, juga dipengaruhi oleh interaksi genotipe x lingkungan. Analisis korelasi menunjukkan tidak ada hubungan yang signifikan antara nilai Brix pada nira batang dengan bobot biji per malai. Masing-masing berkorelasi nyata positif dengan tinggi tanaman, sehingga sorgum yang tinggi cenderung menghasilkan bobot biji per malai dan nilai Brix yang tinggi. Genotipe PI 150/N-043-16-5-5-P dan PI 150/K-19-6-2-B merupakan genotipe dengan tinggi tanaman, bobot biji per malai dan nilai Brix yang tinggi dibanding genotipe lainnya, dan setara dengan varietas Bioguma 1, Bioguma 3, dan Numbu.
Kata kunci: bioenergi, bobot biji per malai, nilai Brix, pakan, pangan
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Akbar, Yohanita Maulina, Dr Rudiati Evi Masithoh e Nafis Khuriyati. "Aplikasi Analisis Multivariat Berdasarkan Warna untuk Memprediksi Brix dan pH pada Pisang". Agritech 37, n. 1 (10 marzo 2017): 109. http://dx.doi.org/10.22146/agritech.17022.
Testo completoAbstract (sommario):
In this research, Multiple Linear Regression (MLR) model was used to predict Brix and pH of banana based on RGB and Lab color values. Banana samples varied in color and ripening level from less ripen to ripen. RGB and Lab values were measured non-destructively using colormeter, while Brix and pH were determined using conventional method in laboratory. Multivariate analysis was done using the Unscrambler ® X 10.3 (CAMO, AS, OLSO, Norway, and trial version). Results showed that calibration model using MLR was able to predict Brix and pH of banana based on RGB and Lab color values. Furthermore, validation data were used to test the selected models. MLR model to predict Brix based on RGB and Lab validation resulted in 0.8 and 0.84 of determination coefficient between observation and prediction data. The model was also able to predict pH based on RGB and Lab values with 0.71 and 0.79 of determination coefficient between observation and prediction data. ABSTRAKPada penelitian ini, model Multiple Linear Regression (MLR) digunakan untuk memprediksi Brix dan pH pada buah pisang berdasarkan nilai warna Red Green Blue (RGB) dan Lab. Pisang yang dianalisis mempunyai variasi warna dari kurang masak sampai masak. Parameter warna RGB dan Lab dilakukan secara non-destruktif dengan menggunakan colormeter, sedangkan pengukuran kualitas internal yaitu Brix dan pH ditentukan secara destruktif atau dengan prosedur konvensional di laboratorium. Aplikasi analisis multivariat yang digunakan adalah Unscrambler ® X 10.3 (CAMO, AS, OLSO, Norway, versi trial). Analisis data menunjukkan bahwa model kalibrasi MLR dapat digunakan untuk memprediksi Brix dan pH berdasarkan parameter warna RGB dan Lab pada buah pisang. Selanjutnya, data validasi digunakan untuk menguji model MLR terpilih. Model kalibrasi MLR dapat memprediksi Brix berdasarkan nilai RGB dan Lab dengan nilai koefisien determinasi (R2) sebesar 0,8 dan 0,84, secara berurutan. Sedangkan koefisien determinasi (R2) untuk pH berdasarkan warna RGB dan Lab adalah 0,71 dan 0,79.
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Gribova, N. A., e L. V. Berketova. "Osmotic dehydration of berries: study of mass transfer parameters". Proceedings of the Voronezh State University of Engineering Technologies 80, n. 2 (2 ottobre 2018): 30–37. http://dx.doi.org/10.20914/2310-1202-2018-2-30-37.
Testo completoAbstract (sommario):
Osmotic dehydration, due to its advantages related to energy and quality, is gaining popularity as an additional stage of processing in the chain of complex processing of products. As a rule, osmotic dehydration is a slow process, so there is a need for additional methods to increase mass transfer without adversely affecting the quality of the product. This has provided the necessary motivation for many recent achievements in the field. Minimal processing methods, such as osmodehydration, find a significant place in the processing industry to increase the shelf life of fruit and berry raw materials. The overall efficiency of the process is determined by the process parameters affecting the phenomenon of mass transfer. Therefore, in this work the parameters of mass transfer in osmotic dehydration of berry raw materials: strawberry, raspberry, blackcurrant, BlackBerry are studied. The process of mass transfer has been modeled effectively, as evidenced by the results obtained. Berries, previously dehydrated at 70°Brix solution of sucrose, have the cryoscopy temperature lower (-1.7°C)–(-4.8°C), dehydrated at 60°Brix solution of sucrose from (-1.1°C) to (-2,6°C).The number of crystallized water in berries, dehydrated in 60°Brix solution of sucrose made up from 8.6–10.1 %, and in 70°Brix solution from a 13.9–12.9 %.The amount of frozen water in berries, dehydrated 70 ° Brix sucrose solution from 7.5–40.4%, dehydrated 60°Brix sucrose solution from 2.3–10.1%. Reducing the activity of water in berries treated with 70°Brix solution was 2.8–0.8 %, 60°Brix sucrose solution from 1.4–0.3%. The obtained data show that due to osmotic dehydration of berries with a solution of sucrose, followed by freezing, the activity of water decreases, which allows extending the shelf life and limits the access of microorganisms to growth in the environment.
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Ram, Bakshi, B. S. Chaudhary e S. Singh. "Response to indirect selection in ratoon of sugarcane seedlings". Australian Journal of Agricultural Research 48, n. 2 (1997): 207. http://dx.doi.org/10.1071/a96011.
Testo completoAbstract (sommario):
Effectiveness of indirect selection criteria for brix yield based on 4 primary characters (number of millable canes per stool, NMC), cane diameter, cane height, and hand refractometer brix (HR Brix) was studied. A general index involving these traits was studied in 3 populations of ratoon seedlings. Selection based on number of millable canes was best, followed by selection based on selection index and cane height in ratoon crop. The differences in mean performance in ratoon crop disappeared at the evaluation stage in the clonal nursery under normal and restricted irrigated conditions. In general, all selection criteria, except selection based on HR Brix, gave similar responses for brix yield. Low repeatability of traits, insignificant regression coecients, and low proportion of clones outyielding the best standard variety CoH 35 at selection and evaluation stages indicated the ineffectiveness of selection at the single-stool ratoon seedlings stage. The reasons for ineffectiveness of selection based on the selection index are discussed.
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Vipul, Chaudhary, Kumar Vivak, Sunil Sunil, Kumar A Anil, Kumar Vikrant e Kumar Ratnesh. "Impact of Different Drying Temperatures and Osmotic Treatments on Quality of Pineapple Slices during Storage". Food Processing & Nutritional Science 1, n. 1 (30 giugno 2020): 80–85. http://dx.doi.org/10.46619/fpns.2020.1-1006.
Testo completoAbstract (sommario):
The investigation was carried out using different drying temperatures and osmotic treatments. Storage study was also carried out for a period of 3 months for pineapple slices packed in HDPE bags. The effect on dehydrated pineapple samples determined by moisture content, ash, ascorbic acid, rehydration ratio and pH content. The highest moisture value was found 8.22% for control sample dried at 50°C after 90 days of storage while lowest 4.49% for 60°Brix sample dried at 70°C before storage. The highest ash value was found 3.80% 50°Brix treated sample dried at 50°C before storage while lowest 0.80% for control sample dried at 70°C after 90 days of storage. The highest ascorbic acid value was found 169.1 mg/100 g for 50°Brix treated sample dried at 50°C before storage while lowest 79.8 mg/100 g for control sample dried at 70°C after 90 days of storage. The highest rehydration ratio value was found 4.88 for control sample dried at 50°C before storage while lowest 2.57 for 60°Brix treated sample dried at 70°C after 90 days of storage. The highest pH value was found 5.2 for 50°Brix sample dried at 50°C before storage while lowest was found 4.6 for control sample dried at 70°C after 90 days of storage packed in HDPE bags. In most of the quality characteristics hot air oven drying at 50°C for 50°Brix sugar solution treated sample presented better values in comparison to 60°Brix and control samples.
21
Folegatti, Marília I. S., Fernando C. A. U. Matsuura, Ricardo L. Cardoso, Sérly S. Machado, Andréa S. Rocha e Renata R. Lima. "Aproveitamento industrial do umbu: processamento de geléia e compota". Ciência e Agrotecnologia 27, n. 6 (dicembre 2003): 1308–14. http://dx.doi.org/10.1590/s1413-70542003000600015.
Testo completoAbstract (sommario):
O umbu (Spondias tuberosa Arr. Cam.) é uma fruta nativa da Região Nordeste do Brasil. Ainda não devidamente caracterizado, particularmente no que se refere ao seu potencial para industrialização, o umbu demanda pesquisas. Atualmente, esses frutos são consumidos restritamente na região Nordeste, principalmente na forma in natura, preparados como refresco, sorvete ou "umbuzada" (polpa do umbu cozida com leite e açúcar). Objetivou-se com este trabalho adequar a tecnologia convencional de processamento de geléia e compota para o umbu, avaliando a aceitação sensorial e as características físico-químicas desses produtos. Para o processamento de geléia, utilizaram-se duas proporções polpa/açúcar: 50:50 e 40:60, e três concentrações de sólidos insolúveis da polpa: 0%, 50% e 100% do teor de sólidos original da polpa. Para a compota, elaboraram-se produtos com diferentes teores de sólidos solúveis finais, 25°Brix, 30°Brix e 35°Brix, adicionados de 1% de cloreto de cálcio. As polpas, geléias e compotas dos diferentes tratamentos foram submetidas a análises físicas, físico-químicas, químicas e sensoriais. No processamento da geléia de umbu, os produtos obtidos apresentaram valores de acidez total titulável entre 0,60% e 0,90% e de sólidos soúveis totais entre 66,3°Brix e 68,6°Brix. Os tratamentos com proporção polpa:açúcar 50:50 foram significativamente (p < 0,05) mais bem aceitos quanto aos atributos aparência, cor e textura. Para o produto compota de umbu, os tratamentos com 30°Brix e 35°Brix obtiveram maior aceitação sensorial. O aproveitamento do umbu na forma de geléia ou compota mostrou-se possível, tendo os produtos desenvolvidos apresentado boa aceitação sensorial.
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Dwiatmini, Kristina, Andari Risliawati, Dodin Koswanudin e Sutoro Sutoro. "EVALUASI KANDUNGAN BRIX PADA BATANG TANAMAN PLASMA NUTFAH SORGUM (Sorghum bicolor L. (Moench)) Brix Content Evaluation of Sorghum Stem Germplasm (Sorghum bicolor L. (Moench))". Informatika Pertanian 28, n. 2 (3 dicembre 2019): 67. http://dx.doi.org/10.21082/ip.v28n2.2019.p67-72.
Testo completoAbstract (sommario):
<p>Biji sorgum dimanfaatkan sebagai sumber pangan, pakan dan bahan industri. Batang tanaman sorgum umumnya mengandung senyawa gula, sehingga dapat dimanfaatkan sebagai minuman sirup dan bahan baku bioethanol. Untuk mengetahui kandungan senyawa gula pada batang tanaman sorgum dapat dilakukan dengan mengukur kadar brix dengan alat refraktometer. Untuk menghasilkan varietas sorgum yang dapat menghasilkan brix tinggi diperlukan sumber genetik untuk pemuliaan tanaman sorgum. Penelitian telah dilaksanakan terhadap 219 aksesi plasma nutfah sorgum koleksi Bank Gen Balitbangtan di BB Biogen. Bahan batang tanaman diperoleh dari pertanaman sorgum yang ditanam pada tahun 2017. Sampel batang tanaman sorgum dipotong menjadi 3 bagian yang sama panjangnya dan diukur kandungan brix dengan refraktometer. Hasil penelitian menunjukkan aksesi plasma nutfah sorgum dari batang bagian bawah, tengah dan atas memiliki kandungan brix bervariasi yaitu berkisar antara 0.2 – 15.1 %. Aksesi sorgum introduksi ICSV 93051, ICSV 93032, ICSV 93047, ICSR 91026, ICSV 8906, dan ICSV 93007 memiliki kandungan brix lebih dari 14% yang dapat dipergunakan sebagai bahan pemuliaan sorgum manis. Genotipe yang memiliki sifat ganda yang mampu menghasilkan hasil biji dan kandungan brix baik pada tanaman induk maupun ratun perlu mendapat perhatian.</p><p> </p><p> </p><p align="center"><strong>Abstract</strong><strong></strong></p><p align="center"><strong> </strong></p><p> Sorghum seeds are used as a source for food, feed, and industrial materials. Stems of sorghum plants generally contain sugar compounds, so it can be used as a beverage of syrup and raw materials of bioethanol. The content of sugar compounds on the stem of the sorghum plant could be done by measuring brix by using refractometer. Genetic resources are needed to develop sorghum varieties that can produce high brix content in its plant breeding program. A study has been conducted on 219 germplasm accessions of IAARD Gene Bank collection at BB BIOGEN. The plant stem material is derived from the planting of sorghum grown in 2017. The stem of the sorghum plant is cut into 3 equal lengths and brix content measured by refractometer. The results showed that the accession of the sorghum germplasm from the lower, middle, and upper stems reveal that brix content varied from 0.2 to 15.1%. Introduction accession of sorghum i.e. ICSV 93051, ICSV 93032, ICSV 93047, ICSR 91026, ICSV 8906, and ICSV 93007 had a brix content of more than 14% and can be used as parent materials for sweet sorghum breeding. Multiple traits of genotipe which are capable producing seed yield and brix content in both primary plants and ratoon need further attention.</p><p> </p><p><strong><em><br /></em></strong><em></em></p>
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Santos Oliveira Silva, Emerson Gabriel dos. "Physicochemical Characterization and Brix in Jersey Cow Colostrum in Tropical Conditions". International Journal of Agriculture and Biology 26, n. 01 (1 luglio 2021): 139–44. http://dx.doi.org/10.17957/ijab/15.1818.
Testo completoAbstract (sommario):
The objective of this study was to evaluate the nutritional composition (fat, total protein, casein, defatted dry extract, total solids and vitamin A), refractometry and pH of Jersey cow colostrum and correlations between Brix degree and colostrum constituents. Colostrum samples were collected from Jersey cow in the fifth milking after calving. Samples were identified and refrigerated until analysis. Data were subjected to analysis of variance and a descriptive analysis, while differences between milk were compared by the Duncan’s test (P < 0.05) using the SAS version 9.0 software program. Pearson correlations were then performed between Brix grade and bovine colostrum constituents. The fat, total protein, casein, total solid and Brix percentage of the colostrum gradually decreased from the first to the fifth milking, while the lactose content increased. Positive correlations were observed between Brix values and protein, casein, total solids and defatted dry extract contents, while lactose was negatively correlated. The rapid reduction in Brix means and protein concentrations after delivery demonstrates the importance of administer colostrum in the shortest period after birth. © 2021 Friends Science Publishers
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Brandão, Maria Cristina Cabral, Geraldo Arraes Maia, Dorasilvia Pontes Lima, Expedito José de Sá Parente, Claudio Cabral Campello, Renata Tieko Nassu, Terezinha Feitosa e Paulo Henrique Machado de Sousa. "Análise físico-química, microbiológica e sensorial de frutos de manga submetidos à desidratação osmótico-solar". Revista Brasileira de Fruticultura 25, n. 1 (aprile 2003): 38–41. http://dx.doi.org/10.1590/s0100-29452003000100012.
Testo completoAbstract (sommario):
Polpas de mangas foram submetidas a um processo de secagem solar após pré-tratamento osmótico, com o intuito de obter-se produtos de umidade intermediária. Foram testados quatro pré-tratamentos osmóticos, ou seja, imersão em xaropes de sacarose com 45º Brix, 55º Brix, 65º Brix e imersão seqüenciada em xaropes de 45; 55 e 65º Brix. O processamento envolveu os seguintes passos: desidratação osmótica nas soluções de sacarose adicionadas de substâncias conservantes e secagem solar. Após a secagem, os tratamentos com 45 e 65º Brix foram selecionados através de análise sensorial para avaliação da estabilidade durante 180 dias de armazenamento à temperatura ambiente (28º C). Durante todo o processamento e/ou após a obtenção dos produtos finais, três tipos de avaliações foram realizadas: determinações físico-químicas (atividade de água, pH, acidez total, vitamina C, sólidos solúveis, umidade, açúcar total e açúcares redutores), análises microbiológicas e testes sensoriais. De acordo com os resultados obtidos, os dois produtos apresentaram boa estabilidade no que se refere às propriedades microbiológicas e sensoriais durante o armazenamento.
25
Cho, Rae Kwang, Mi Ryeong Sohn e Young Kil Kwon. "New Observation of Nondestructive Evaluation for Sweetness in Apple Fruit Using near Infrared Spectroscopy". Journal of Near Infrared Spectroscopy 6, A (gennaio 1998): A75—A78. http://dx.doi.org/10.1255/jnirs.169.
Testo completoAbstract (sommario):
The study was carried out to investigate the factors effects on brix and possibility of non-destructive evaluation for sweetness in apples by near infrared (NIR) spectroscopy. Correlation coefficients ( R) between brix and total sugar contents was 0.66 and R between brix and moisture contents was 0.8. But no clear relationship between brix and free sugar contents(0.30 for fructose, 0.34 for glucose, 0.39 for sucrose and 0.65 for sorbitol) was found. Brix was effected on not only total sugar but also moisture contents. MLR analysis for free and total sugar contents of apple, multiple correlation coefficients ( R) and standard error of prediction ( SEP) were 0.75 and 0.86% for fructose, 0.84 and 0.26% for glucose, 0.86 and 0.33% for sucrose, 0.93 and 0.18% for sorbitol and 0.84 and 0.81% for total sugar. MLR analysis for sweetness score, which was calculated with sweetness index(sucrose 1.0 as standard), R and SEP were 0.8 and 0.82% in range 12.83–17.63. In conclusion, the sweetness score of apple fruits can be determine by NIR spectroscopy.
26
Wu, Xu, Feng Chen, Xiaozhen Zhao, Chengke Pang, Rui Shi, Changle Liu, Chengming Sun, Wei Zhang, Xiaodong Wang e Jiefu Zhang. "QTL Mapping and GWAS Reveal the Genetic Mechanism Controlling Soluble Solids Content in Brassica napus Shoots". Foods 10, n. 10 (11 ottobre 2021): 2400. http://dx.doi.org/10.3390/foods10102400.
Testo completoAbstract (sommario):
Oilseed–vegetable-dual-purpose (OVDP) rapeseed can effectively alleviate the land contradiction between crops and it supplements vegetable supplies in winter or spring. The soluble solids content (SSC) is an important index that is used to evaluate the quality and sugar content of fruits and vegetables. However, the genetic architecture underlying the SSC in Brassica napus shoots is still unclear. Here, quantitative trait loci (QTLs) for the SSC in B. napus shoots were investigated by performing linkage mapping using a recombinant inbred line population containing 189 lines. A germplasm set comprising 302 accessions was also used to conduct a genome-wide association study (GWAS). The QTL mapping revealed six QTLs located on chromosomes A01, A04, A08, and A09 in two experiments. Among them, two major QTLs, qSSC/21GY.A04-1 and qSSC/21NJ.A08-1, accounted for 12.92% and 10.18% of the phenotypic variance, respectively. In addition, eight single-nucleotide polymorphisms with phenotypic variances between 5.62% and 10.18% were identified by the GWAS method. However, no locus was simultaneously identified by QTL mapping and GWAS. We identified AH174 (7.55 °Brix and 7.9 °Brix), L166 (8.9 °Brix and 8.38 °Brix), and L380 (8.9 °Brix and 7.74 °Brix) accessions can be used as superior parents. These results provide valuable information that increases our understanding of the genetic control of SSC and will facilitate the breeding of high-SSC B. napus shoots.
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Guilherme, Paulo Ribas, Cláudio César Pessatto, Willian Roger Zaika, Ernesto Quast, Leda Battestin Quast, Rita de Cássia Salvucci Celeste Ormenese e Dorivaldo da Silva Raupp. "Desenvolvimento de geleia de tamarillo contendo polpa integral". Brazilian Journal of Food Technology 15, n. 2 (10 maggio 2012): 141–49. http://dx.doi.org/10.1590/s1981-67232012005000007.
Testo completoAbstract (sommario):
O tamarillo (Cyphomandra betacea Sendt) é originário da Região Andina do Peru. O objetivo deste trabalho foi desenvolver o produto 'geleia de tamarillo' e consistiu em: caracterizar os frutos e o seu rendimento em polpa; apresentar um protocolo de processo, e avaliar sensorialmente os produtos obtidos a partir de três formulações, diferenciadas quanto ao grau °Brix, ao tipo de açúcar e ao teor de pectina. Os frutos tamarillos apresentaram 54,8 ± 4,0 mm, 34,6 ± 2,4 mm e 36,2 ± 6,5 g de comprimento, diâmetro e massa, respectivamente. A polpa integral, de sabor doce e levemente ácida, apresentou 13,30 ± 0,14 °Brix e pH 4,19 ± 0,11. Os frutos renderam 83,3% de polpa integral e 51,5% de locular mucilaginosa, contendo sementes. As geleias de 50 °Brix e contendo glicose ou sacarose foram as mais aceitas pelos provadores quando comparadas à geleia de 40 °Brix, de menor concentração de sólidos solúveis. Um porcentual maior ou igual a 70% do total de provadores aprovou as geleias de 50 °Brix para todos os seus atributos sensoriais avaliados e um mínimo de 40% manifestou intenção de compra. Considerando-se que a sacarose possui custo menor que a glicose, o protocolo de fabricação da geleia de 50 °Brix contendo a sacarose e 2% de pectina foi o recomendado, na pesquisa, para a produção de geleia de tamarillo.
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Manosalva, Daniel Gustavo, Luca Grispoldi, Marco Spagnolo e Martina Crociati. "Delayed First Milking in Unassisted Overnight Calving Did Not Affect the Quality of Colostrum but Influenced Serum Brix Refractometry in Holstein Calves at Two Days of Life". Animals 12, n. 13 (28 giugno 2022): 1665. http://dx.doi.org/10.3390/ani12131665.
Testo completoAbstract (sommario):
Timely administration of good-quality colostrum represents the first farm strategy to avoid the failure of passive transfer (FPT). However, calves born during the night are likely to be fed later than recommended. Our aim was to evaluate whether night-occurring calving and delayed first milking affected colostrum quality and immune passive transfer. The dataset included 463 calvings. Four liters of colostrum were administered by an esophageal tube feeder. The mean Brix% of colostrum was 27.43%, while serum Brix% at two days of life in calves was 10.19%. According to the Generalized Linear Model, parity ≥ 4, calving months of March, April, and from September to November positively influenced the quality of colostrum. Dams carrying a male calf produced lower quality colostrum compared with those carrying a female calf (−2.78 ± 1.04 Brix%, p = 0.008); heavier female calves were associated with greater colostrum quality (0.29 ± 0.05 for each kg increase, p < 0.001). Night- or day-calving had no effect on the quality of colostrum. The only factor influencing the serum Brix% of female Holstein calves at two days of life was the day- or night-occurring birth (−0.386 ± 0.188 Brix% in calves born during the night, p = 0.04). Our results showed that calves born overnight and fed the day after had decreased serum Total Protein concentrations as indicated by reduced Brix refractometer readings, compared with calves born during the day and fed quickly after birth. However, the administration of 4 L of high-quality colostrum likely improved their serum Brix% at two days of life. Alternatively, where the prevalence of good-quality colostrum is lower, improving calving supervision and ensuring timely feeding are important to reduce the risk of FPT.
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Stojić, Milica, Natalija Fratrić, Marijana Kovačić, Vesna Ilić, Dragan Gvozdić, Olivera Savić e Radojica Đoković. "Brix Refractometry of Colostrum from Primiparous Dairy Cows and New-Born Calf Blood Serum in the Evaluation of Failure of Passive Transfer". Acta Veterinaria 67, n. 4 (20 dicembre 2017): 508–24. http://dx.doi.org/10.1515/acve-2017-0041.
Testo completoAbstract (sommario):
AbstractFailure of passive transfer (FPT) of immunoglobulins (IgG) is associated with increased morbidity and mortality of calves. In this study we evaluated the digital Brix refractometer usefulness for the assessment of FPT. A number of 16 colostrum samples from the first milking (2-3h post-partum) of Holstein-Friesian dairy heifers and 29 blood sera of 3-6 days old calves were analyzed with a digital Brix refractometer. Total proteins were determined by the biuret reaction. Colostral IgG were determined by radial immunodiffusion (RID), and colostral whey and blood serum γ globulin (composed almost entirely of IgG) were determined by agarose protein gel electrophoresis (APE) and densitometry. Colostral % Brix score was 25.5±3.4%. Concentrations of colostrum IgG and colostral whey γ globulin were 130±33 g/L and 100±24 g/L respectively. The concentration of total proteins in colostral whey was 134±30 g/L. The correlations between Brix values and the concentrations of IgG determined with RID and the concentrations of γ globulin determined with APE were positive and highly significant (P<0.001 and P<0.01). The concentration of serum proteins of new-born calves was 57.75±11.8 g/L, the concentration of γ globulin was 14.4±7.8 g/L, and the Brix score was 8.6±1.0%. FPT (serum γ globulin<10 g/L) was detected in 34.5% (10/29) calves. Brix score correlated with the concentration of blood serum γ globulins in all examined calves. The results have confirmed that digital Brix refractometry allows the producers to use this technique in order to estimate colostral and calf serum IgG, thereby monitoring both colostrum quality and success of passive transfer.
30
Beaulieu, J. C., J. M. Lea, G. Eggleston e Z. Peralta-Inga. "Sugar and Organic Acid Variations in Commercial Cantaloupes and Their Inbred Parents". Journal of the American Society for Horticultural Science 128, n. 4 (luglio 2003): 531–36. http://dx.doi.org/10.21273/jashs.128.4.0531.
Testo completoAbstract (sommario):
Markedly higher average sucrose (58.1%) was recovered from mesocarp tissue of six orange-flesh cantaloupe (Cucumis melo L.) genotypes over three seasons compared to glucose (17.5%) and fructose (25.6%). A significant decrease in sucrose concentration was observed in the fall for all six genotypes, and the glucose (21.2%) and fructose (33.5%) ratios were also higher in the fall; markedly different than the spring fruit averages. The female inbreds had significantly (P = 0.05) lower glucose, fructose, sucrose, and total sugars than the commercial hybrids. Compared to the male and female inbreds, commercial hybrids had significantly (P = 0.05) higher concentrations of fructose, sucrose and total sugars, but not glucose. Two refractometric digital measures of °Brix (°Brix-At and °Brix-II) in homogenized slurries were positively correlated (r = 0.914; P ≤ 0.001), and were also correlated with total sugars (r ≥ 0.839) and sucrose (r ≥ 0.752). °Brix of cubes (°Brix-cube) was significantly correlated with sucrose and total sugars (r ≥ 0.627). Total sugar was positively correlated with sucrose (r = 0.843; P ≤ 0.001). Eastern-type U.S. melons had significantly (P = 0.05) higher °Brix-cube and °Brix-At compared to U.S. western shipper-types. Female inbreds were significantly (P = 0.05) lower in mean °Brix (all three measures) compared to the hybrids and male inbreds, and female inbreds had higher pH than the male inbreds. Western shippers had significantly (P = 0.05) higher pH compared to eastern genotypes. The predominant organic acid in all six genotypes was succinic acid, generally followed by oxalic, citric/isocitric, then malic acid. Succinic acid recovery was significantly higher in all six genotypes harvested in the fall, compared to spring. Eastern genotypes had significantly (P = 0.05) lower organic acids compared to western genotypes. Results indicate that maternal inheritance appears to confer lower sugar accumulating capacity and higher pH, which, is associated with vacuolar acid invertase (AI) and hexose balance. Breeding programs should focus on hybrid vigor derived through accentuating homozygous female inbreds with lower pH and higher capacity for sucrose accumulation, as well as morphological and agronomic traits often carried in the female line.
31
Soder, Kathy J., Eric D. Billman, Jeff Horst, Kristi Balk e Aimee Hafla. "92 Brix as an Indicator of Energy Value in Alfalfa and Orchardgrass Herbage". Journal of Animal Science 98, Supplement_4 (3 novembre 2020): 77. http://dx.doi.org/10.1093/jas/skaa278.140.
Testo completoAbstract (sommario):
Abstract This study correlated Brix values (measure of total dissolved solids via refractometer) with wet-lab analyses (WLA) of sugar concentrations in fresh herbage of two forage species, alfalfa (ALF; Medicago sativa) and orchardgrass (ORG; Dactylis glomerata) to estimate energy value of pastures. Four monthly samplings occurred from May-August, 2019. At each sampling, eight ALF and ORG samples were collected from established monocultures of each species. Solubles were extracted from fresh herbage using a hand-held garlic press. Triplicate Brix readings were recorded per sample using a digital refractometer. Fresh herbage samples were flash-frozen in liquid N, freeze-dried, and analyzed via WLA for total and individual (glucose and fructose) sugar concentrations, as well as nutritive value (CP, NDF, and ADF; Agri-King, Inc., Fulton, IL). The TDN, RFV, and RFQ were calculated. Brix values were correlated with WLA using the PROC CORR procedure in SAS, with significance established at P < 0.05 and trends at 0.05 < P < 0.10. Brix values were negatively correlated (P < 0.001) with WLA of total sugars (-0.65), glucose (-0.6), and fructose (-0.68) in ORG while no significant correlations (P > 0.10) were detected in ALF. Conversely, Brix values of ORG and ALF were positively correlated (P < 0.01) with NDF (0.57 – 0.58) and hemicellulose (0.42 – 0.55), as well as with ADF in ALF (0.54). Brix was negatively correlated (P < 0.05) with CP in ALF (-0.41), but there was no correlation (P > 0.10) with ORG. No correlations (P > 0.10) were detected between Brix and TDN, RFV, and RFQ. These results indicate that the Brix index does not directly translate to forage quality, particularly sugar concentrations, of ALF and ORG, and may inadvertently select herbage with increased fiber concentrations. Producers should consider more accurate methods, such as WLA, for assessing energy value of pastures.
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Wijonarko, Gunawan, Ike Sitoresmi Mulyo Purbowati, Tatang Widjojoko e Ali Maksum. "The Influence of Agroclimate, Gandatapa Village, Sumbang Subdistrict on Microbial Profile, Brix Values, and Total Sugar, Naturally Spread Coconut Sap". Indonesian Journal of Food Technology 1, n. 2 (25 dicembre 2022): 41. http://dx.doi.org/10.20884/1.ijft.2022.1.2.7226.
Testo completoAbstract (sommario):
Temperature and relative humidity are factors that affect the microbial profile and brix value of coconut sap. High temperature and relative humidity tend to support microbial growth. On the other hand, high relative humidity will reduce the brix value and total coconut sap sugar. Therefore, it is necessary to study the relationship between agro-climatic conditions with microbial profile, brix value and total sugar in organically run coconut sap in Gandatapa Village. This research is expected to provide benefits for those who need coconut sap as a source of S. cerevisiae and as a raw material for the manufacture of brown sugar. Coconut sap samples were taken using a simple random technique. Temperature and relative humidity were recorded for each sampling. 250 ml of coconut sap was put into a sterile plastic bottle and then using an ice box, it was taken to the Agricultural Technology Laboratory for analysis. The analysis carried out included total microbes, total yeast, total bacteria, yeast percentage, brix value and total coconut sap sugar. The data were analyzed using Pearson correlation to determine the relationship and the degree of closeness. The results showed that temperature and relative humidity were positively correlated with the microbial profile of organically dissolved coconut sap. At an air temperature of 28.4oC and an air humidity of 81%, the total microbes of organically run coconut sap were 6.45 logs, the total yeast was 4.28 log cfu/ml, the total bacteria were 2.52 log cfu/ml and the yeast percentage was 72, 75%. Brix values and total sugar under the same conditions were 16.7% and 8.25%. The value of brix and total sugar of coconut sap is negatively correlated with temperature and relative humidity. There is a strong relationship between temperature and total microbial, brix value and total sugar. The correlation coefficient is 0.71, respectively; -0.81 and -0.78. Strong correlations were also observed between relative humidity and total microbial, total yeast and brix values. The correlation coefficient is 0.85, respectively; 0.82; and -0.83.
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Kaçar, Y., Z. Mecitoğlu, O. Topal e H. Batmaz. "Comparison of four semi-quantitative tests for evaluation of colostrum quality in Saanen goats". South African Journal of Animal Science 51, n. 5 (10 maggio 2022): 657–63. http://dx.doi.org/10.4314/sajas.v51i5.12.
Testo completoAbstract (sommario):
The aim of this study was to investigate the efficacy of Brix refractometry and to compare the Brix value with semi-quantitative indicators such as total protein (TP), total protein in whey (TPw), glutaraldehyde coagulation time (GCT) and gamma-glutamyl transferase (GGT) enzyme activity for determining the quality of colostrum. Colostrum samples were collected from 38 Saanen goats just after parturition and on the first day (24 ± 4 hours) and second day (48 ± 4) after parturition. The Brix value, TP and TPw levels were measured with optic refractometers. The level of GCT was determined with a 10% glutaraldehyde solution. Immunoglobulin G (IgG) concentrations were measured with a goat IgG ELISA. All measurements decreased significantly after parturition. The IgG and Brix values on the day of parturition were 4719.28 ±107.94 mg/dL and 20.55 ± 0.71, respectively. The TPw levels were lower than TP on all three days and a significant difference was detected on day 2. The IgG concentration was higher in the first-parity and second-parity goats compared with those older does. However, no differences were observed in the other characteristics of the colostrum. Litter size did not affect IgG or the other semi-quantitative tests. Correlation coefficients were higher than 0.8 Tp with TPw, and for the Brix value with both TP and TPw. Brix refractometry could be used to evaluate colostrum quality in Saanen goats and TPw is a more reliable indicator than TP.
34
Lazarova, Zornitsa, Maya Rashkova, Raina Gergova e Virna-Maria Tsitou. "ANTIMICROBIAL EFFECT OF A MEANS FOR ENZYME EXCAVATION (BRIX 3000) AND PHOTODYNAMIC THERAPY IN CARIOUS LESIONS OF PRIMARY TEETH – IN VITRO EXPERIMENT". Journal of IMAB - Annual Proceeding (Scientific Papers) 27, n. 4 (18 ottobre 2021): 4048–51. http://dx.doi.org/10.5272/jimab.2021274.4048.
Testo completoAbstract (sommario):
The selective removal of the caries dentin via enzyme methods for excavation appears to be an alternative to the conventional treatment of carious lesions in childhood. Photodynamic therapy is an effective alternative for the reduction of cariesogenic microorganisms. Brix 3000 is an enzyme-based material for excavation of carious dentin. Aim: To study the antimicrobial effect of means for enzyme excavation (Brix 3000) and photodynamic therapy with FotoSan 630 Intro Kit to the two main cariesogenic microorganisms – S. mutans and L. acidophilus, in vitro experiment; Materials and Methods: Eighty plates were prepared: group 1- 20 plates only with Brix 3000; group2 – 20 plates only with FotoSan; group 3 – 20 plates with a combination of Brix 3000 and FotoSan; group 4 – 20 plates without an active agent. In the agar of each plate, three 7 mm wells in diameter were made, where the Brix 3000 gel was placed, as well as discs soaked with the dye and irradiated with FotoSan and a combination of them. After 24 hours, the zone of inhibition was measured. Results: Compared to the control group, Brix 3000 and FotoSan have a defined antimicrobial activity against S. mutans and Lactobacillus spp. By combining the two materials, their antimicrobial activity significantly increases. S. mutans shows greater resistance compared to Lactobacillus spp. Conclusion: A combination of enzyme-based excavation and photodynamic therapy could be used successfully in the treatment of carious lesions in primary teeth.
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Thakulla, Dharti, Bruce Dunn, Bizhen Hu, Carla Goad e Niels Maness. "Nutrient Solution Temperature Affects Growth and °Brix Parameters of Seventeen Lettuce Cultivars Grown in an NFT Hydroponic System". Horticulturae 7, n. 9 (17 settembre 2021): 321. http://dx.doi.org/10.3390/horticulturae7090321.
Testo completoAbstract (sommario):
Nutrient solution temperature in a hydroponic system affects °Brix and yield of lettuce; thus, it is important to maintain the water temperature within an appropriate range. Nutrient-film technique (NFT) trials were conducted to investigate the effects of different water temperatures (18.3 °C, 21.1 °C, and ambient) on growth and °Brix of 17 cultivars from five different types (Loose leaf, Romaine, Butterhead, Salanova, and Batavian) of lettuce. The average daily water temperature for ambient treatment was recorded to be 20 to 26.5 °C. The study was conducted in a split-plot design with three replications over time. Results indicated that water temperature affected root and shoot fresh and dry weight, plant width, and °Brix for lettuce. Lettuce grown at 21.1 °C were 15% greater for shoot fresh weight than plants grown at ambient conditions. All the growth and quality parameters of lettuce were found to be affected by cultivars, with “Coastal Star” showing the best results in both growth and °Brix parameters. All the cultivars of the Romaine type showed greater growth and °Brix, while Salanova lettuce did not perform well in all treatments compared to other lettuce types. For CO2 assimilation, the interaction between water temperature and cultivars was significant, with “Parris Island” having the greatest rate at ambient water temperature. These results suggested that maintaining water temperature at 21.1 °C produced lettuce with greater growth and biomass but had 26% lower °Brix than lettuce grown at 18.3 °C.
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Lopes, Toni Jefferson, Carlos Roberto de Menezes Peixoto, Adriano Da Silva, Fernanda Arnhold Pagnussatt, Ronan Ribeiro Da Costa Junior, Romulo Gomes Guimarães e Bruno Trevizan Dos Santos. "ANÁLISE ESTATÍSTICA PARAMÉTRICA DE FATORES DE OPERAÇÃO NO PROCESSO DE FERMENTAÇÃO PARA OBTENÇÃO DE CACHAÇA". Brazilian Journal of Food Research 7, n. 1 (29 agosto 2016): 1. http://dx.doi.org/10.3895/rebrapa.v7n1.3443.
Testo completoAbstract (sommario):
Brazilian sugar cane spirit (cachaça) production is traditional among rural producers in Santo Antônio da Patrulha-RS-Brazil. In this work, in similar conditions used by the producers, the effect of different °Brix and nutrients concentration on sugar cane juice fermentation time and ethanol yield was tested. Sixteen experiments were executed, predicted in a statistical planning, in order to identify the effect of eight factors. The results indicate that the increase on manganese sulfate concentration and cornmeal amount, and also the zinc sulfate concentration increase in interaction effect with higher °Brix, cause increase in fermentation time. It was also observed that the ethanol yield was higher at lower °Brix and at higher triple superphosphate amount in interaction effect with higher °Brix. Ammonium sulfate and copper sulfate concentrations, and also rice bran amount had no significant influence on the process. The best parameters determined, at local conditions, to obtain the lowest fermentation time and higher ethanol yield are the following: 14°Brix, triple superphosphate 0.5 g/L, zinc sulfate 0.5 g/L, manganese sulfate 0.2 g/L, cornmeal 5 g/L. It is also indicated the maintenance of ammonium sulfate 0.5 g/L and rice bran 5 g/L.
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Panighetti, Irene. "Michel Brix, Sade et les félons". Studi Francesi, n. 144 (XLVIII | III) (15 dicembre 2004): 618–19. http://dx.doi.org/10.4000/studifrancesi.37801.
Testo completo
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Huang, Jingjing, Ting Zou, Heming Hu, Xu Xiao, Zhiwei Wang, Ming Li e Sihui Dai. "Automatic Brix Measurement for Watermelon Breeding". Applied Sciences 12, n. 23 (29 novembre 2022): 12227. http://dx.doi.org/10.3390/app122312227.
Testo completoAbstract (sommario):
Sweetness or sugar content, represented by soluble solids contents (SSC), is a vital quality trait in watermelon breeding which can be assessed by the refractive index method. However, sampling watermelon juice out of the pulp is a process that is both labor-intensive and error-prone. In this study, we developed an automatic SSC measurement system for watermelon breeding to improve efficiency and decrease costs. First, we built an automatic cutting system to cut watermelons into precise halves, in which a laser rangefinder is used to measure the distance from the upper surface of the watermelon to itself, and thus, the diameter is estimated. The experiments showed a high correlation between the estimated diameters and the ground truths, with and . Then, we built an automatic Brix measurement system to obtain the Brix data from a central point on the watermelon’s section, where an image analysis procedure is applied to locate the testing point. This is then transformed to the camera coordination system, and a refractometer is driven by a 3-axis robotic arm to reach the testing point. Brix measurement experiments were conducted using three vertical gaps and four lateral gaps between the probe of the refractometer and the pulp. The result showed that the best parameters were a vertical gap of 4 mm and a lateral gap of 2 mm. The average accuracy reached 98.74%, which indicates that this study has the potential to support watermelon breeding research.
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Wang, Jin, Yujia Huo, Yutong Wang, Haoyu Zhao, Kai Li, Li Liu e Yinggang Shi. "Grading detection of “Red Fuji” apple in Luochuan based on machine vision and near-infrared spectroscopy". PLOS ONE 17, n. 8 (4 agosto 2022): e0271352. http://dx.doi.org/10.1371/journal.pone.0271352.
Testo completoAbstract (sommario):
A quality detection system for the “Red Fuji” apple in Luochuan was designed for automatic grading. According to the Chinese national standard, the grading principles of apple appearance quality and Brix detection were determined. Based on machine vision and image processing, the classifier models of apple defect, contour, and size were constructed. And then, the grading thresholds were set to detect the defective pixel ratio t, aspect ratio λ, and the cross-sectional diameter Wp in the image of the apple. Spectral information of apples in the wavelength range of 400 nm~1000 nm was collected and the multiple scattering correction (MSC) and standard normal variable (SNV) transformation methods were used to preprocess spectral reflectance data. The competitive adaptive reweighted sampling (CARS) algorithm and the successive projections algorithm (SPA) were used to extract characteristic wavelength points containing Brix information, and the CARS-PLS (partial least squares) algorithm was used to establish a Brix prediction model. Apple defect, contour, size, and Brix were combined as grading indicators. The apple quality online grading detection platform was built, and apple’s comprehensive grading detection algorithm and upper computer software were designed. The experiments showed that the average accuracy of apple defect, contour, and size grading detection was 96.67%, 95.00%, and 94.67% respectively, and the correlation coefficient Rp of the Brix prediction set was 0.9469. The total accuracy of apple defect, contour, size, and Brix grading was 96.67%, indicating that the detection system designed in this paper is feasible to classify “Red Fuji” apple in Luochuan.
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Fadly, F., M. K. Afdhol, F. Hidayat, Y. Yuliusman, R. M. Nordin, R. Hasibuan e F. M. Hakim. "Formulation of Bioethanol From Pineaple Skin Waste and Applicated as Wax Inhibitors". IOP Conference Series: Earth and Environmental Science 1034, n. 1 (1 giugno 2022): 012026. http://dx.doi.org/10.1088/1755-1315/1034/1/012026.
Testo completoAbstract (sommario):
Abstract The problem of paraffin wax deposition is one of the problems that occurs in the oil industry which causes blockages during the oil production process. To prevent this problem, you can use a chemical method is injecting wax inhibitors. one of the effective wax inhibitors is solvent. So this paper aims to produce bioethanol solvent through biomass engineering, namely pineapple skin waste. For the production of bioethanol through several methods, namely pretreatment, hydrolysis which aims to convert cellulose into glucose with HCl acid, fermentation which aims to convert glucose into bioethanol with the help of saccaromyces cerevisiae yeast and finally distillation. The result in the hydrolysis process with concentrations of HCl 1M, 2M, 3M, 4M and 5M produces glucose 7 Brix, 16 Brix, 20 Brix, 21 Brix and 24 Brix. And with variations in heating time of 1 hour to 5 hours, the optimum glucose was obtained at 3 hours of 24 Brix. The results of fermentation with a variation of 1 day to 6 days, the optimum bioethanol content in fermentation for 3 days is 18%. 18% bioethanol is mixed into waxy crude oil with a pour point value of 43°C, and the result is able to reduce the pour point is 3°C. To increase the decrease in the pour point of bioethanol, it is blend with a toluene, and the result is to reduce the pour point value by 8°C. So it can be concluded that mixing bioethanol and toluene as a solvent can inhibit paraffin wax deposition
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LEE, SU-YEON, SANG-HYUN PARK e DONG-HYUN KANG. "Inactivation of Alicyclobacillus acidoterrestris Spores in Apple and Orange Juice Concentrates by Gamma Irradiation". Journal of Food Protection 77, n. 2 (1 febbraio 2014): 339–44. http://dx.doi.org/10.4315/0362-028x.jfp-13-133.
Testo completoAbstract (sommario):
The objective of this study was to evaluate the effect of different concentrations of reconstituted apple and orange juice on reduction of Alicyclobacillus acidoterrestris spores by gamma irradiation. Spores of A. acidoterrestris were inoculated into three concentrations of apple (18, 36, and 72°Brix) and orange (11, 33, and 66°Brix) juice and subjected to five radiation doses (1, 3, 5, 7, and 10 kGy). No significant reductions (P > 0.05) in spores were observed after the 1-kGy treatment for all apple and orange concentrations. Spores in 18, 36, and 72°Brix apple juice concentrates subjected to 10 kGy were reduced to 4.34, 3.9, and 3.84 log CFU/ml, respectively. Similar results were observed for orange juice. When 10 kGy was applied to 11°Brix orange juice, populations of spores were reduced by 5 log CFU/ml. The reduction of spores in 33 and 66°Brix orange juice concentrates exposed to 10-kGy gamma irradiation was 4.54 and 3.85 log CFU/ml, respectively. Juice concentration did not affect (P > 0.05) the number of surviving A. acidoterrestris spores from the same kGy treatment. Gamma irradiation treatment did not change the pH or water activity of the juice (P > 0.05).
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KASIMATIS, Christoforos Nikitas, Evangelos PSOMAKELIS, Nikolaos KATSENIOS, Eleni PAPATHEODOROU, Ioanna KAKABOUKI, Ioannis ROUSSIS, Antonios MAVROEIDIS, Dimitris APOSTOLOU e Aspasia EFTHIMIADOU. "Bayesian Ridge Algorithm for Brix Prediction in Industrial Tomato". Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Horticulture 78, n. 2 (29 novembre 2021): 102. http://dx.doi.org/10.15835/buasvmcn-hort:2021.0030.
Testo completoAbstract (sommario):
Tomato is one of the most significant vegetables in the world. Specifically, for the industrial tomato cultivation, the product is harvested when °Brix are at their peak. Technological advancements nowadays have made Decision Support Systems, based on Machine Learning Algorithms more applicable in a daily basis. Sustainable agriculture is evolving since farmers could be advised by this technology in order to take the best decision for their crops. Farmers who adopt this kind of technology will be able to know the quality of tomatoes. The implementation of a Decision Support System capable to predict the °Brix was conducted, based on various data from previous years, such as quality characteristics, the tomato hybrid used, weather conditions and soil data from the selected fields. Data came from fields from 6 different regions in Peloponnese, Greece over 3 cultivation periods. 12 different algorithms were tested in order to find which is the best one in terms of efficiency. Results of this research showed that the predicted °Brix were following the same pattern as the actual °Brix. This means that the DSS could advise the farmer about the ideal harvesting period where the °Brix will be maximized. The use of this DSS using real time weather data as an input will be a valuable tool for the farmers.
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Quast, Ernesto, Lucas Mezzomo, Leda Battestin Quast e Flávio Luis Schmidt. "Rheological evaluation of Prunus mume pulp". Brazilian Journal of Food Technology 16, n. 4 (dicembre 2013): 285–91. http://dx.doi.org/10.1590/s1981-67232013005000034.
Testo completoAbstract (sommario):
The rheological behaviour of mume pulp at 6, 7, 8 and 9 °Brix was investigated using a rotational viscometer at temperatures ranging from 15 to 75 °C. The rheological models of Herschel-Bulkley and Ostwald-Waele (Power Law) were fitted to obtain the rheological parameters of the mume pulp. The product was described as time non-dependent and presented a viscosity of 1.9 Pa.s at 15 °C and 1.1°Pa.s at 65 and 75 °C for the 9 °Brix pulp. The pulp showed non-Newtonian behaviour and the Herschel-Bulkley model was used to describe this behaviour. The activation energy ranged from 6.6-10.6 kJ.mol-1 and the consistency index from 18.0-22.9 Pa.s n for the 9 °Brix pulp and 8.3-12.2 Pa.s n for the 8 °Brix pulp at temperatures varying from 15 to 75 °C. The models presented high correlation values for all the rheological data obtained in the present work.
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MATSUURA, FERNANDO CÉSAR AKIRA URBANO, RICARDO LUÍS CARDOSO, MARÍLIA IEDA DA SILVEIRA FOLEGATTI, JOÃO ROBERTO PEREIRA OLIVEIRA, JORGE ANSELMO BARRETO DE OLIVEIRA e DELFRAN BATISTA DOS SANTOS. "AVALIAÇÕES FÍSICO-QUÍMICAS EM FRUTOS DE DIFERENTES GENÓTIPOS DE ACEROLA (MALPIGHIA PUNICIFOLIA L.)". Revista Brasileira de Fruticultura 23, n. 3 (dicembre 2001): 602–6. http://dx.doi.org/10.1590/s0100-29452001000300032.
Testo completoAbstract (sommario):
O presente trabalho teve como objetivo avaliar quanto às características químicas e físico-químicas frutos de 12 genótipos de acerola (Malpighia punicifolia L.), em processo de seleção pela Embrapa Mandioca e Fruticultura, visando a identificar aqueles com altos teores de vitamina C e elevada relação Brix/acidez. Os frutos analisados foram colhidos no estágio de maturação "de vez", na safra de setembro a outubro dos anos de 1997 e 1998. Os resultados obtidos para vitamina C variaram de 835 a 1820 mg de ácido ascórbico por 100 g de polpa, para sólidos solúveis totais de 6,0 a 11,6%, para acidez total titulável de 0,69 a 1,65%, para relação Brix/acidez de 4,24 a 11,59 e para pH de 3,08 a 3,57. Dentre os genótipos analisados, o CMF022 e o CMF019 apresentaram os maiores teores de vitamina C e os menores valores para a relação Brix/acidez, enquanto os genótipos CMF015, CMF008 e CMF010 apresentaram a maior relação Brix/acidez, nos dois anos do experimento.
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Pauletto, Dário, Francisco de Assis Alves Mourão Filho, Ricardo Alfredo Kluge e João Alexio Scarpare Filho. "Efeito do porta-enxerto na qualidade do cacho da videira 'Niágara Rosada'". Pesquisa Agropecuária Brasileira 36, n. 7 (luglio 2001): 935–39. http://dx.doi.org/10.1590/s0100-204x2001000700002.
Testo completoAbstract (sommario):
O objetivo deste trabalho foi avaliar a qualidade do cacho da videira 'Niágara Rosada' (Vitis labrusca L.) enxertada sobre cinco porta-enxertos e avaliada durante sete safras na região de Taubaté, SP. Os cachos colhidos nas plantas enxertadas sobre 'IAC 313', 'IAC 766' e 'Traviú' apresentaram tamanho (comprimento e largura), massa e número de bagas significativamente maiores do que o verificado nas plantas enxertadas sobre 'Kober 5BB' e 'Schwarzmann'. A baga apresentou massa significativamente maior no 'IAC 766' e 'Traviú' em comparação ao 'Schwarzmann'. O teor de sólidos solúveis dos frutos foi maior no 'Kober 5BB' (15,46°Brix) e 'Schwarzmann' (15,28°Brix) em comparação ao verificado no 'IAC 313' (14,18°Brix).
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Varella, Carlos Alberto Alves, Vinicius Rios Barros e Murilo Mesquita Baesso. "NOTA TÉCNICA: MAPEAMENTO DA VARIABILIDADE ESPACIAL DO BRIX EM CANA-DE-AÇÚCAR". REVISTA ENGENHARIA NA AGRICULTURA - REVENG 20, n. 2 (27 aprile 2012): 112–17. http://dx.doi.org/10.13083/reveng.v20i2.246.
Testo completoAbstract (sommario):
Este trabalho teve como objetivo propor uma metodologia para mapear a variabilidade espacial do brix na cultura da cana-de-açúcar. Os dados foram coletados na Usina Paineiras S.A., localizada em Itapemirim, ES. As leituras de brix foram obtidas em uma área de 1 ha. As análises geoestatísticas foram feitas no programa computacional Arcgis 9.2®. Foram testados modelos circular, esférico, exponencial e gaussiano com o método de interpolação por krigagem. O modelo gaussiano foi selecionado conforme metodologia proposta neste trabalho. Obteve-se um mapa temático da variabilidade espacial do brix que poderá auxiliar no manejo da cultura da cana-de-açúcar, detectando falhas e fatores limitantes da produtividade.
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Evelyn, Chairul, Komalasari, E. Pebrianti e W. Vazirani. "Use of Pulsed Electric Field for the Inactivation of Eupenicillium Javanicum Ascospores in Pineapple Juice". Journal of Physics: Conference Series 2049, n. 1 (1 ottobre 2021): 012020. http://dx.doi.org/10.1088/1742-6596/2049/1/012020.
Testo completoAbstract (sommario):
Abstract Heat resistant molds are principle spoilage agents in foods and beverages with low acidity. The main objective of this work was to investigate the effect of 65 kV/cm PEF on the log reductions of Eupenicillium javanicum ascospores in 10–30°Brix pineapple juice as well as the modelling. Then, the first-order and Weibull parameters of the 65 kV/cm PEF inactivation of E. javanicum ascospores was estimated and compared. Further, the effect of PEF in combination with ultraviolet (UV) light treatment on the log reductions of E. javanicum ascospores was studied. Decreasing the soluble solid content of the juice from 30 to 10°Brix for 11.3 pulses increased the spore inactivation in pineapple juice by 2.7 log. A pulse number of 16 would be required by the 65 kV/cm PEF to achieve a 5-log reduction in juice. The Weibull model described spore inactivation by pulsed electric field. The estimated b-values for the 65 kV/cm PEF were 0.673 at 10°Brix, 0.041 at 20°Brix and 0.010 at 30°Brix, with n-values between 0.73 and 2.08. Although the combination of the PEF and UV light resulted in a slightly greater microbial inactivation, however two hurdles were not suggested. The results of this study confirmed the advantage of PEF technology for the inactivation of E. javanicum ascospores in pineapple juice.
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Elías Silupu, Jorge Wilmer, Cecilia Edith Rivas Plata, Celia Rocio Auris Silvera e Ronald Pérez Salcedo. "CINÉTICA, COEFICIENTE DE DIFUSIVIDAD Y CONTENIDO DE ANTOCIANINAS EN LA DESHIDRATACIÓN OSMÓTICA DE FRAMBUESA HERITAGE (RUBUS IDAEUS)". REPOSITORIO DE REVISTAS DE LA UNIVERSIDAD PRIVADA DE PUCALLPA 4, n. 2 (19 dicembre 2019): 8. http://dx.doi.org/10.37292/riccva.v4i2.147.
Testo completoAbstract (sommario):
El fruto de frambuesa (Rubus idaeus) esampliamente conocido como fresa del bosquepero muy poco aprovechado industrialmente. Ental sentido el objetivo del trabajo de investigaciónfue determinar la influencia de la concentraciónde sacarosa y contenido de antocianinas en ladeshidratación osmótica de frambuesa, para locual se calculó el coeficiente de difusividad efectivamediante el modelo de Crank. En consecuencia, setrabajó con un diseño de investigación de 2 nivelesde concentración (50 y 60 °Brix) con 3 niveles decalor (40, 50 y 60 °C) analizando todas las muestraspor triplicado, encontrándose como valor máximode disminución de peso y disminución de aguatrabajando a una calor de 60 °C y concentración de60 °Brix, asimismo el nivel más alto de ganancia desólidos solubles fue estudiando a una calor de 60 °Cy concentración de 50 °Brix. Por otra parte el valormáximo calculado para la difusividad efectiva desacarosa fue 4.05E-10 m2/s para un n=1 comparandoa una calor de 40°C y concentración de 50 °Brix. Espreciso señalar que el contenido de antocianinas sedeterminó cuando la frambuesa alcanzó su equilibrioosmótico, registrándose el máximo valor delcontenido de antocianinas de 67.42 mg cianidina-3glucósido/100 gr de muestra a una calor de 40 °Ccon una concentración de 50°Brix. Finalmente elanálisis de varianza con valores-P menor a 0.05muestra un efecto significativo entre los factores deconcentración de sacarosa y calor sobre la cinéticade deshidratado osmótico con un 95% de nivel deconfianza.
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Jaywant, Swapna A., Harshpreet Singh e Khalid Mahmood Arif. "Low-Cost Sensor for Continuous Measurement of Brix in Liquids". Sensors 22, n. 23 (25 novembre 2022): 9169. http://dx.doi.org/10.3390/s22239169.
Testo completoAbstract (sommario):
This paper presents a Brix sensor based on the differential pressure measurement principle. Two piezoresistive silicon pressure sensors were applied to measure the specific gravity of the liquid, which was used to calculate the Brix level. The pressure sensors were mounted inside custom-built water-tight housings connected together by fixed length metallic tubes containing the power and signal cables. Two designs of the sensor were prepared; one for the basic laboratory testing and validation of the proposed system and the other for a fermentation experiment. For lab tests, a sugar solution with different Brix levels was used and readings from the proposed sensor were compared with a commercially available hydrometer called Tilt. During the fermentation experiments, fermentation was carried out in a 1000 L tank over 7 days and data was recorded and analysed. In the lab experiments, a good linear relationship between the sugar content and the corresponding Brix levels was observed. In the fermentation experiment, the sensor performed as expected but some problems such as residue build up were encountered. Overall, the proposed sensing solution carries a great potential for continuous monitoring of the Brix level in liquids. Due to the usage of low-cost pressure sensors and the interface electronics, the cost of the system is considered suitable for large scale deployment at wineries or juice processing industries.
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Acosta López, Edgar Rafael, e Ángélica Castro Garay. "Deshidratación osmótica de mashua amarilla (Tropaleum tuberosa) con jarabe invertido de sacarosa y jugo de maracuyá". Prospectiva Universitaria 17, n. 1 (5 marzo 2022): 41–47. http://dx.doi.org/10.26490/uncp.prospectivauniversitaria.2020.17.1389.
Testo completoAbstract (sommario):
El objetivo fue evaluar el efecto de incorporación del jugo de maracuyá en el jarabe invertido de sacarosa y temperaturas de inmersión (30 °C y 40 °C) en los parámetros cinéticos, polifenoles totales y capacidad antioxidante en el deshidratado osmótico (DO) de mashua amarilla (Tropaleum tuberosa). La materia prima fue cortada en láminas de 4 mm de espesor, escaldado en ebullicion a 89 °C por 15 minutos, inmersion en solución osmótica (jarabe invertido de sacarosa a 60 °Brix y jugo de maracuyá) proporciones (65:35, 70:30 y 75:25) concentraciones de 37,5 °Brix, 41,5 °Brix y 40,5 °Brix respectivamente, drenado, secado con aire caliente a 50 °C con una velocidad de aire de 1,4 ±0,1 m/s y envasado. El (DO) se realizó durante 4,5 horas, los parámetros cineticos que se evaluaron fueron: pérdida de peso porcentual (PP%), tasa de ganancia de solidos (GS) y tasa de perdida de agua (WL). Los polifenoles totales se midieron por el método Follin Ciocalteu y la capacidad antioxidante por el método ABTS; obteniéndose los siguientes resultados: los valores de (PP%) oscilaron entre 19.24 % ± 0.02 y 23.56 % ± 0.07; el tratamiento a 37,5 °Brix y 40 °C presento la mayor (PP%) 23.56 % ± 0.07, mayor tasa de (GS) 0,715±0.003 g de solido/g fruta y mayor tasa de (WL) 0.388±0.006 g de agua/g fruta. El contenido de polifenoles totales y la capacidad antioxidante disminuye en los tratamientos, a 41,5 °Brix y 30 °C se presento la menor perdida 7,57 ± 0,21 mg EAG/g MS y 21,12 ± 0,16 μmol TE/g MS 17 % y 11,78 % respectivamente. La interaccion de concentracion y temperatura tiene efectos significativos (P<0,05) en los parametros cineticos y en los polifenoles totales y capacidad antioxidante por el metodo ABTS