Journal articles: 'Zinc content'

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Bhubhanil, Sakkarin, Panida Sittipo, Paweena Chaoprasid, Sumontha Nookabkaew, Rojana Sukchawalit, and Skorn Mongkolsuk. "Control of zinc homeostasis in Agrobacterium tumefaciens via zur and the zinc uptake genes znuABC and zinT." Microbiology 160, no. 11 (November 1, 2014): 2452–63. http://dx.doi.org/10.1099/mic.0.082446-0.

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The Agrobacterium tumefaciens zinc uptake regulator (Zur) was shown to negatively regulate the zinc uptake genes znuABC, encoding a zinc transport system belonging to the ATP-binding cassette (ABC) transporter family, and zinT, which encodes a periplasmic zinc-binding protein. The expression of znuABC and zinT was inducible when cells were grown in medium containing a metal chelator (EDTA), and this induction was shown to be specific for zinc depletion. The expression of znuABC was reduced in response to increased zinc in a dose-dependent manner, and zinT had a less pronounced but similar pattern of zinc-regulated expression. The inactivation of zur led to constitutively high expression of znuABC and zinT. In addition, a zur mutant had an increased total zinc content compared to the WT NTL4 strain, whereas the inactivation of zinT caused a reduction in the total zinc content. The zinT gene is shown to play a dominant role and to be more important than znuA and znuB for A. tumefaciens survival under zinc deprivation. ZinT can function even when ZnuABC is inactivated. However, mutations in zur, znuA, znuB or zinT did not affect the virulence of A. tumefaciens.

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Iolascon, Achille, and Laura Perrone. "Erythrocytic Zinc Content during Childhood." Acta Haematologica 73, no. 2 (1985): 114–16. http://dx.doi.org/10.1159/000206303.

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Dipti, SS, C. Hotz, KA Kabir, and M. Bipul. "Changes in the zinc content of selected bangladeshi rice varieties through modified parboiling and milling methods." SAARC Journal of Agriculture 15, no. 2 (January 25, 2018): 31–43. http://dx.doi.org/10.3329/sja.v15i2.35153.

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Zinc deficiency is prevalent among women and children in Bangladesh, and methods to increase the zinc content of parboiled rice could contribute to its prevention. We quantified the effect of modified parboiling conditions on zinc content and of the degree of milling on zinc and phytate contents of Bangladeshi rice varieties. Parboiling studies varied the conditions used in the local commercial operations, including pre-steaming and soaking times, change of soaking water, and steaming pressure. Milling studies used 10 Bangladeshi varieties at 0% (brown), 2%, 4%, 6%, 8%, and 10% degree of milling. With ambient soaking water, shorter soaking time was observed with a higher zinc content in brown rice, but not in 10% milled rice, and changing soaking water did not modify zinc content in brown or 10% milled rice. Pre-steaming time and open- vs. closed-system steaming had no significant effect on brown or 10% milled rice zinc content. Reducing the degree of milling from 10% to 6% or 4% resulted in a mean increase in zinc content of 27% and 47%, respectively, and an increase in phytate content of 35% and 72%, respectively. Zinc content in milled rice did not appear to be significantly affected by the parboiling conditions tested. While lower degree of milling resulted in higher zinc content, it is uncertain whether the higher phytate content would fully negate this increase by decreasing the bioavailable fraction of zinc. Human studies of zinc bioavailability from Bangladeshi rice at different degrees of milling are warranted.SAARC J. Agri., 15(2): 31-43 (2017)

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C. Dias-Barbosa, Cristina Z. de Morais, Diego S. V. de Oliveira, Kaesel J. D. de Oliveira, Regilda S. dos Reis Moreira Araújo, and Maurisrael de Moura Rocha. "Selection of Cowpea Elite Lines for Iron and Zinc Biofortification." Current Nutrition & Food Science 17, no. 1 (December 29, 2020): 48–58. http://dx.doi.org/10.2174/1573401316999200503031253.

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Background: Cowpea is a very popular crop in Brazil, rich in nutrients that can be used as food to feed the population, avoiding deficiencies caused by the lack of minerals such as iron and zinc. Objective: To select elite cowpea lines for biofortification of iron and zinc and determine the physical and chemical characteristics of the lines. We analyzed: 33 cowpea genotypes, being 31 elite genotypes and two biofortified cultivars (control). Method: The 10 best lines with iron and zinc contents were selected and, together with the controls, were analyzed for chemical composition (moisture, ash, lipids, proteins and carbohydrates), total energy value and cooking time. Results: The iron and zinc contents in semi-prostrate genotypes were higher than those in semi-erect genotypes, all the semi-prostrate lines presented a high iron content, and 19.25% presented a high zinc content. The genotypes of the semi-erect lines exhibited more significant genetic variability for iron content, whereas those of the semi-prostrate genotypes showed more significant genetic variation for zinc content, both exhibited a high genetic component in phenotypic expression. Improving the genotypes for increased protein content led to reductions in lipid and carbohydrate contents, as well as the total energy value, whereas increasing the carbohydrate content increased both the total energy value and the zinc content. The MNC04-792F-146 lines presented alleles that favored an increase in carbohydrate content and total energy, while the MNC04-769F-26, MNC04-769F-31, and MNC04-774F-90 lines were shown to be good sources of genes for increasing protein content, decreasing lipid content, and rapid cooking. Conclusion: The MNC04-762F-9, MNC04-792F-146, and MNC04-769F-55 lines exhibited the greatest potential to be released as iron and zinc biofortified cultivars.

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Zhang, Yue-Qiang, Li-Li Pang, Peng Yan, Dun-Yi Liu, Wei Zhang, Russell Yost, Fu-Suo Zhang, and Chun-Qin Zou. "Zinc fertilizer placement affects zinc content in maize plant." Plant and Soil 372, no. 1-2 (October 1, 2013): 81–92. http://dx.doi.org/10.1007/s11104-013-1904-9.

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Saakian, Alexander. "Monitoring the content of manganese, zinc, and cobalt in Haplic Chernozem." АгроЭкоИнфо 4, no. 46 (August 19, 2021): 16. http://dx.doi.org/10.51419/20214416.

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The paper uses the materials of local agroecological monitoring of arable soils of the Belgorod region on the content of manganese, zinc, and cobalt in haplic chernozem of the steppe part of the Belgorod region. The content of manganese, zinc and cobalt in the arable horizon was 1.42, 1.22 and 1.23 times higher than in the parent rock, respectively. A strong correlation was established between the total contents of zinc and cobalt in the soil profile (r=0.77), and the bonds of manganese with zinc and cobalt had the strength of an average value (r=0.59 and r=0.55). The content of mobile forms of the studied trace elements in haplic chernozem is at a low level. The main reason for the shortage of mobile forms of manganese, zinc and cobalt is their low background content in virgin soil. Keywords: HAPLIC CHERNOZEM, GROSS CONTENT, CONTENT OF MOBILE FORMS, MANGANESE, ZINC, COBALT

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Yakimovskii, A. F., I. I. Shantyr, M. A. Vlasenko, M. V. Yakovleva, and S. Yu Kryzanovskaia. "The influence of acizolum to bioelements content in rat's blood plasma, parenchimal organs and brain." Biomeditsinskaya Khimiya 64, no. 2 (2018): 183–87. http://dx.doi.org/10.18097/pbmc20186402183.

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Zinc content in blood plasma and brain tissue of rats was studied by analytic mass-spectrometry with inductively coupled plasma. In control (saline-treated animal) zinc content in plasma was 3.6±1.4 mg/ml, in the liver – 12.5±2.5 mg/mg, in the spleen – 10.9±4.1 mg/mg, in the brain – 8.7±3.0 mg/mg. After a single intraperitoneal injection of zinc donator acizolum (24 mg/kg) zinc content decreased in all examined tissues, especially in brain. After a course of sequential acizolum injections (seven administrations during two weeks) essential elevation of zinc content in blood plasma and tissues investigated was detected. The maximal increase zinc concentration in blood plasma and liver was detected in 15 h after the last acizolum injections. Selen, calcium, copper and iron contents demonstrated a more complex behaviour. The obtained data suggest that prolonged acizolum administration has a significant impact on the bioelements content, and this should be taken into consideration when this zinc donator is used as a drug.

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Pandey, Shyam Narain, and Isha Verma. "Zinc-Induced Biochemical Constituents and Reproductive Yield of Wheat with Zinc Supply in Sand Culture Conditions." INTERNATIONAL JOURNAL OF PLANT AND ENVIRONMENT 6, no. 03 (July 25, 2020): 178–81. http://dx.doi.org/10.18811/ijpen.v6i03.03.

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In a sand culture experiment, the present study deals with the quantitative (growth and some biochemical constituents) and qualitative yield of grains (zinc and protein contents) of wheat (Triticum aestivum L., var. HD-2967) under the influence of various concentrations of zinc supply (0.01, 0.1 1.0 and 5 mg l-1). Zinc levels were prepared in a standard nutrient solution (omitting zinc). The zinc accumulation was dose dependent in vegetative parts of wheat, which was increased with increase in zinc supply levels. The low and high zinc content in wheat shoot inhibited pigments content and activity of antioxidative enzymes like catalase and peroxidase. The mobilization of zinc in grains was lower at elevated and low zinc-supply levels in contrast to their accumulation in vegetative parts. The zinc mobilization efficiency index (ZnMEI) was higher at normal doses of zinc as compared to low (0.01 mg l-1) and elevated zinc levels (5 mg l-1). In the present study, maximum increase of 15, 25 and 18% was observed in the dry matter yield, shoot length and total chlorophyll content, respectively following exposure of 1.0 mg l-1 of zinc. At this zinc treatment, protein content in the seeds was elevated by 10% with zinc enrichment by 73%. The observations of this study may be helpful in the studies of zinc-enrichment in wheat production in Zn-deficient soil.

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Middleton, Maureen, Manuel Olivares, Alejandra Espinoza, Miguel Arredondo, Fernando Pizarro, and Carolina Valenzuela. "Exploratory Study: Excessive Iron Supplementation Reduces Zinc Content in Pork without Affecting Iron and Copper." Animals 11, no. 3 (March 11, 2021): 776. http://dx.doi.org/10.3390/ani11030776.

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The aim of this work was to determine in an exploratory manner the effect of excessive iron supplementation on iron, zinc, and copper contents in pork and pork offal. Pigs averaging 50 days in age and 15 ± 1.3 kg body weight were allocated to a control group (500 ppm dietary Fe) and a supplemental group (3000 ppm dietary Fe). After an iron supplementation period of 60 days, blood samples were analyzed to determine iron biomarkers, serum copper, and zinc contents. Animals were slaughtered to assess total iron, non-heme iron, heme iron, zinc, and copper contents in samples of nine meat cuts and some offal. Iron supplementation improved the iron status in pigs with increased hemoglobin and hematocrit, but did not affect serum levels of iron, zinc, and copper. Iron supplementation did not affect the heme and non-heme iron contents of the different meat cuts. Zinc contents decreased by 32–55% in meat cuts, where iron content increased in the liver, spleen, kidneys, and pancreas. No differences of zinc and copper were observed in offal samples. High concentrations of iron supplementation reduce zinc content in pork.

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Gargul, K., P. Jarosz, and S. Małecki. "Alkaline Leaching of Low Zinc Content Iron-Bearing Sludges." Archives of Metallurgy and Materials 61, no. 1 (March 1, 2016): 43–50. http://dx.doi.org/10.1515/amm-2016-0013.

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Various types of waste materials containing zinc (e.g. dusts and sludges from gas dedusting process) are obtained in steel industry. The contents of Zn in these materials may vary considerably. Even a low concentration of zinc in recirculated products precludes their recycling in ferrous metallurgy aggregates. Long storage of this type of material can lead to contamination of soil and water by zinc compounds which can be leached out by acid rain, for example. This paper focuses on research involving alkaline leaching tests of low zinc content iron-bearing materials. These tests were preceded by the analysis of the elemental, phase and grain size composition, and analysis of the thermodynamic conditions of the leaching process. The main aim of research was to decrease the content of the zinc in the sludge to the level where it is suitable as an iron-bearing material for iron production (~1% Zn). Leaching at elevated temperatures (368 K, 60 min) has led to a decrease in the zinc content in the sludge of about 66%. The research revealed that long hour leaching (298 K, 100 hours) carried out at ambient temperatures caused a reduction in zinc content by 60% to the value of 1.15-1.2% Zn.

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Binnerts, W. T. "Zinc status of cows as deduced from the liver zinc content." Netherlands Journal of Agricultural Science 37, no. 2 (June 1, 1989): 107–17. http://dx.doi.org/10.18174/njas.v37i2.16642.

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The zinc content of cow's liver was estimated in livers collected from slaughterhouses in The Netherlands. A total of 333 samples taken in autumn and early winter had an average Zn content 125+or-29 mg/kg DM, with 32 outliers (Zn 212 mg/kg and higher). The distribution of the high outliers, along a line extending from NW to SE over the country, may be related to geophysical factors, but also to feeding practice. Some very low Zn contents could be found by subtraction of the residual active Zn that is part of enzymes, about 90 mg/kg, and logarithmic transformation. Thus 29 low outliers could be traced, all with effective Zn storage below 10 mg/kg. Hence in the total material, nearly 10% was gravely deficient, some 40% suboptimal, and 10% excessively rich in Zn. Liver Zn seems a good means of assessment of the liver status of cows, on a much shorter time basis than for typical storage elements like copper. As a means of investigating interactions, the method was less satisfactory, at least for Zn relative to copper and iron. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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YOSHINAGA, Jun, Mieko KIMURA, Kiyohisa NAGAI, Yoshinori ITOKAWA, Tetsuro HONGO, and Tsuguyoshi SUZUKI. "Zinc content of Japanese green tea." Nippon Eiyo Shokuryo Gakkaishi 40, no. 5 (1987): 416–18. http://dx.doi.org/10.4327/jsnfs.40.416.

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Kochi, Sims K., Giampietro Schiavo, MichÃ¨le Mock, and Cesare Montecucco. "Zinc content of theBacillus anthracislethal factor." FEMS Microbiology Letters 124, no. 3 (December 1994): 343–48. http://dx.doi.org/10.1111/j.1574-6968.1994.tb07306.x.

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Atkinson, Stephanie A. "Abnormal Zinc Content in Human Milk." American Journal of Diseases of Children 143, no. 5 (May 1, 1989): 608. http://dx.doi.org/10.1001/archpedi.1989.02150170110034.

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Gupta, Shipra, Kirti Arora, and Geeta Trilok-Kumar. "Zinc Content of Cereals and Pulses in Delhi." Indian Journal of Nutrition and Dietetics 55, no. 2 (April 4, 2018): 216. http://dx.doi.org/10.21048/ijnd.2018.55.2.16049.

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Severe zinc deficiency is rare in India but mild to moderate deficiency could be widespread. There is little data on zinc intakes based on nutritional assessment methods, mainly because the Indian Food Composition Tables that were available until recently gave incomplete zinc content values in foods. A pilot study was, therefore, undertaken to assess the zinc content of cereals and pulses consumed in Delhi and to compare the values with those given in the latest Indian Food Composition Tables. Four hundred and twenty six samples of twenty three varieties of cereals / cereal products and fifteen varieties of pulses, collected from wholesale suppliers in the north, south, east and west zones of Delhi, were analyzed for zinc using atomic absorption spectrophotometer. The concentration of zinc in a given cereal or pulse varied widely between the different zones. Cereals like pearl millet, Italian millet, dry maize, whole wheat and its flour and pulses like roasted Bengal gram and dry peas, Bengal gram dhal and lentil dhal were identified as rich sources of zinc. The mean zinc content in most of the foods analysed in the laboratory showed significant differences when compared with the mean values for cereals and pulses reported in the Indian Food Composition Tables given by the National Institute of Nutrition - Indian Council of Medical Research in 2017. A region specific food composition database is urgently needed as there seem to be huge differences in the zinc values of cereals and pulses consumed in Delhi as compared to the average values representative of all states given in the latest food composition database.

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Czaikoski, Karina, Rodrigo Santos Leite, José Marcos Gontijo Mandarino, Mercedes Concórdia Carrão-Panizzi, Josemeyre Bonifácio Da Silva, and Elza Iouko Ida. "Physicochemical characteristics of canned vegetable-type soybean processed with zinc at different pasteurization times." Pesquisa Agropecuária Brasileira 53, no. 7 (July 2018): 840–48. http://dx.doi.org/10.1590/s0100-204x2018000700008.

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Abstract: The objective of this work was to evaluate the effects of zinc concentration in acidified brine and of pasteurization time on the zinc content, color, and physicochemical and microbiological characteristics of canned vegetable-type soybean (Glycine max). The 22 central composite rotational design (CCRD) was used, with zinc concentration in the acidified brine and duration of pasteurization as variables, resulting in 12 assays. A canning formulation was developed and compared with canned-vegetable type soybean without zinc and with fresh-vegetable type soybean, with microbiological evaluation. Zinc addition within the limits defined by Food and Drug Administration (≤75 ppm) does not affect the physicochemical and microbiological characteristics of canned grains, subjected to 10 min pasteurization. Acidified brine containing zinc increases the content of isoflavone glycosides, decreases the content of malonyl glycosides, and has lower-sucrose and stachyose contents than fresh grains. Zinc addition does not significantly influence the color of grains.

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Aumeistere, Līva, Inga Ciproviča, Dace Zavadska, Konstantīns Bavrins, and Anastasija Borisova. "Zinc Content in Breast Milk and Its Association with Maternal Diet." Nutrients 10, no. 10 (October 5, 2018): 1438. http://dx.doi.org/10.3390/nu10101438.

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Background: Zinc is an indispensable element, being involved in many biological processes. Correspondingly, insufficient zinc intake in early youth can detrimentally affect the function of a growing body. The aim of this study was to determine zinc content in breast milk among lactating women in Latvia and factors (maternal diet; mother’s and baby’s characteristics; breastfeeding pattern) affecting it. Methods: In total, 62 mature milk (at least one month postpartum) samples were collected and pooled within 24 h. Zinc content (mg 100 mL−1) was determined using inductively coupled plasma mass spectrometry (ICP-MS; Agilent 7700×, Agilent Technologies, Tokyo, Japan). Results: Zinc content in mature breast milk ranged from 0.01 to 0.34 mg 100 mL−1 with a median (interquartile range) content of 0.10 (0.05–0.15) mg 100 mL−1. Time postpartum was a significant negative predictor for zinc content in breast milk (r = −0.500; p = 0.000). Median maternal zinc intake was 10.70 (7.24–15.27) mg. Yet, zinc content in breast milk was unaffected by maternal dietary zinc intake (r = 0.155; p = 0.221). Conclusions: Maternal dietary zinc intake was nearly the recommended intake for lactating women (11 mg), but due to low zinc content in breast milk, babies in Latvia might not receive sufficient zinc intake. Future research should aim for the assessment of zinc status by evaluating plasma or serum levels of both mothers and babies.

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Li, Guo Xin, Bing Jie Li, Yi Liang Peng, and Wei Tong Yue. "Influence of Zinc Content on Anti-Corrosion Performance of Zinc-Rich Coatings." Applied Mechanics and Materials 423-426 (September 2013): 169–72. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.169.

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The zinc-rich coating prevents steel from corrosion by sacrificing electrochemical cathode anode protection, but the zinc content is the most important parameter. In this paper, the zinc-rich coatings made with the amino resin, acrylic resin, complex solvents, auxiliary agents and high purity zinc powder. The coatings were applied onto steel substrate and then placed in neutral salt spray for 3000 h in order to study the anti-corrosion performance. The results showed that the anti-corrosion performance was promoted with the zinc content increasing. When the zinc content was higher than 86 wt. %, the anti-corrosion performance can be reached 3000 h. The anticorrosion mechanisms were studied by polarization curves and scanning electron microscope (SEM).

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Skalny, Andrey A., Alexey A. Tinkov, Yulia S. Medvedeva, Irina B. Alchinova, Mikhail Yu Karganov, Olga P. Ajsuvakova, Anatoly V. Skalny, and Alexandr A. Nikonorov. "Zinc asparaginate supplementation induces redistribution of toxic trace elements in rat tissues and organs." Interdisciplinary Toxicology 8, no. 3 (September 1, 2015): 131–38. http://dx.doi.org/10.1515/intox-2015-0020.

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Abstract The primary objective of the current study was the investigation of the influence of zinc asparaginate supplementation for 7 and 14 days on toxic metal and metalloid content in rat organs and tissues. Rats obtained zinc asparaginate in doses of 5 and 15 mg/kg/day for 7 and 14 days. At the end of the experiment rat tissues and organs (liver, kidney, heart, m. gastrocnemius, serum, and hair) were collected for subsequent analysis. Estimation of Zn, Al, As, Li, Ni, Sn, Sr content in the harvested organs was performed using inductively coupled plasma mass spectrometry at NexION 300D. The obtained data showed that intragastric administration of zinc significantly increased liver, kidney and serum zinc concentrations. Seven-day zinc treatment significantly affected the toxic trace element content in the animals’ organs. Zinc supplementation significantly decreased particularly liver aluminium, nickel, and tin content, whereas lead tended to increase. Zinc-induced changes in kidney metal content were characterized by elevated lithium and decreased nickel concentration. Zinc-induced alteration of myocardical toxic element content was multidirectional. Muscle aluminium and lead concentration were reduced in response to zinc supplementation. At the same time, serum and hair toxic element concentrations remained relatively stable after 7-day zinc treatment. Zinc asparaginate treatment of 14 days significantly depressed liver and elevated kidney lithium content, whereas a significant zinc-associated decrease was detected in kidney strontium content. Zinc supplementation for 14 days resulted also in multidirectional changes in the content of heart toxic elements. At the same time, significant zinc-associated decrease in muscle lithium and nickel levels was observed. Fourteen-day zinc treatment resulted in significantly increased serum arsenic and tin concentrations, whereas hair trace element content remained relatively stable. Generally, the obtained data indicate a significant redistribution of toxic metals in the animal organism under zinc supplementation.

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Silva, Camila Andrade, Ângela de Fátima Barbosa Abreu, Magno Antonio Patto Ramalho, and Angelita Duarte Corrêa. "Interaction genotype by season and its influence on the identification of beans with high content of zinc and iron." Bragantia 71, no. 3 (November 6, 2012): 336–41. http://dx.doi.org/10.1590/s0006-87052012005000037.

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The mineral contents in common bean seeds are influenced, in addition to genetic variation, by environmental crop conditions, especially by the soil type and chemical composition and by the genotype x environment interaction. This study was carried out to verify if the zinc and iron contents are affected by the crop growing period. Ten lines with high iron and zinc contents and ten with low contents were assessed in three seasons: "wet season" of 2009/2010 (sowing in November); "dry season" of 2010 (sowing in February) and "winter season" of 2010 (sowing in July), in Lavras, Minas Gerais State, Brazil. The experimental design used was randomized blocks with three replications and plots consisting of two rows of two meters, with a spacing of 0.50 m. The seeds harvested were assessed in regard to iron and zinc mineral contents. The greatest contents were observed in the winter season and the smallest ones in the dry season, with sowing in February. It was observed that in the mean of the three harvests, the lines classified as having high iron and zinc content exhibited an iron quantity 11.0% and a zinc quantity 6.8% above those of low content. The lines by seasons interaction occurs. However, its interference in identification of the groups with high and low content of the two nutrients is not great.

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Wang, Guang Jian, and Na Zeng. "Preparation and Catalytic Properties of Zn-HMS Molecular Sieves." Advanced Materials Research 560-561 (August 2012): 300–304. http://dx.doi.org/10.4028/www.scientific.net/amr.560-561.300.

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Znic-containing mesoporous HMS (Zn-HMS) with various znic contents were synthesized by using netural dodecylamine(DDA) as template at ambient temperature and characterized by means of XRD, FT-IR and TEM. The catalytic performance of Zn-HMS was evaluated by the oxidation of thiophene, and the influences of the zinc content and zinc source on the catalytic performances of the samples were studied. It was observed that a limited content of zinc can be incorporated into the siliciate framework of HMS and appropriate amount of zinc incorporated would promote the formation of the typical wormhole-like structure of HMS and exhibited high catalytic properties while excessive zinc incorporated would destroy the structure. Besides, for all the zinc sources, the samples synthesized from Zn(NO3) 2 have better catalytic effect, and it is benefical for zinc incorporating.

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Gao, Ming, Yicun Chen, Liwen Wu, and Yangdong Wang. "Changes in the Profiles of Yield, Yield Component, Oil Content, and Citral Content in Litsea cubeba (Lour.) Persoon Following Foliar Fertilization with Zinc and Boron." Forests 10, no. 1 (January 13, 2019): 59. http://dx.doi.org/10.3390/f10010059.

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Mountain pepper (Litsea cubeba (Lour.) Persoon) is an important oil plant used as an ingredient in edible oil, cooking condiments, cosmetics, pesticides, and potential biofuels. Zinc and boron are essential micronutrients for plant growth. However, the effects of zinc and boron on the yield, yield component, oil content, and citral content in L. cubeba have not been determined. This study was conducted to evaluate the efficacy of the foliar application of zinc, boron, and multiple micronutrients (zinc + boron) on the yield, yield component, oil content, and citral content of three varieties (Fuyang 1 (FY1), Jianou 2 (JO2), and Jianou 3 (JO3)) of L. cubeba. Zinc sulfate (0.25%), boric acid (0.25%), and zinc sulfate (0.25%) + boric acid (0.25%) were sprayed on selected trees at five different times at full bloom and 28 days before harvest, once every seven days. The results indicated that Zn had a negative effect on the yield, yield component, oil content, and citral content of the FY1, JO2, and JO3 varieties compared to the untreated trees. B had positive effects on the yield, yield component, oil content, and citral content of the JO2 and JO3 varieties but not on those of the FY1 variety when compared to the untreated trees. The highest levels of yield, yield component, oil content, and citral content for all three varieties were obtained with the combined application of zinc sulfate + boric acid. Hence, the foliar application of multiple micronutrients (zinc + boron) is an effective method to improve the yield, oil content, and citral content in L. cubeba. In addition, the 100-fruit weight (HFW) was positively correlated with the yield, oil content, and citral content and could be used as a tool to select new cultivars with high yield, high oil content, and high citral content under zinc sulfate, boric acid, and zinc sulfate + boric acid applications in L. cubeba.

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GUO, J. X., X. M. FENG, X. Y. HU, G. L. TIAN, N. LING, J. H. WANG, Q. R. SHEN, and S. W. GUO. "Effects of soil zinc availability, nitrogen fertilizer rate and zinc fertilizer application method on zinc biofortification of rice." Journal of Agricultural Science 154, no. 4 (May 20, 2015): 584–97. http://dx.doi.org/10.1017/s0021859615000441.

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SUMMARYRice (Oryza sativa L.) is one of the most important cereal crops in the world and a potentially important source of zinc (Zn) in the diet. The improvement of Zn content of rice is a global challenge with implications for both rice production and human health. The objective of the present study was to identify the effects of nitrogen (N) fertilizer rates and Zn application methods on Zn content of rice by evaluating rice production on native soils with different Zn availabilities in 2010/11. The results indicated that Zn application increased rice grain yield and Zn content in grains compared with the control; however, this effect was also affected by the native soil Zn availability, N fertilizer rate and Zn fertilizer application method. The native soil Zn status was the dominant factor influencing grain yield and grain Zn content in response to Zn fertilizer application. Grain Zn content ranged from 19·74 to 26·93 mg/kg under the different Zn statuses. The results also indicated that Zn application method has a significant influence on grain yield. Application of Zn fertilizer to the soil was more effective than the foliar spray on rice grain yield; however, the foliar spray resulted in a greater increase in grain Zn content when compared with soil application. Grain Zn content was affected by application method and displayed the following general trend: soil application + foliar spray > foliar spray > soil application. The experiments investigating the effect of N fertilizer rate combined with Zn application method showed a clear increase in both grain yield and Zn content as the N fertilizer level increased from 200 to 300 kg/ha. In addition, the results also indicated that N content and accumulation increased in all plant tissues, which suggests that Zn application might influence the uptake and translocation of N in rice plants. These results suggest that soil application in addition to a foliar spray of Zn should be considered as an important strategy to increase grain yield and grain Zn content of rice grown in soils with low background levels of Zn-associated diethylene triamine pentaacetate acid. Moreover, this process could be further strengthened by a high N application rate. In conclusion, these results demonstrate the potential of optimizing nutrient management using Zn fertilizer to obtain higher grain yields and higher grain Zn content in fields with low native Zn status.

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SHARMA, DINESH K., RAKESH K. SHARMA, and DEBASIS GHOSH. "SPATIAL DECISION SUPPORT SYSTEM FOR ZINC CONTENT IN SOIL." International Journal of Information Technology & Decision Making 04, no. 04 (December 2005): 567–80. http://dx.doi.org/10.1142/s021962200500174x.

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Spatial decision support systems can enhance the efficiency and effectiveness of decision-making about the zinc status of soil. In this paper, we present an interactive spatial decision support system (ISDSS), identifying the zinc deficiency zone(s), thus enabling the decision-maker to take appropriate measures for correcting zinc deficiencies in soil. The system can display a contour map of the required Block, District, or State of West Bengal along with information about the quantity of zinc to be added to the soil, if the available zinc is not sufficient for a particular crop. The ISDSS consists of a non-spatial database management system and corresponding spatial database, a model base management system, and a user interface. The ISDSS is developed using the scripting language EASI (Engineering Analysis and Scientific Interface) under the GIS software tool, SPANS (Spatial Analysis System). The system runs under the Microsoft Windows operating system.

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Zhang, Qian Qian, and Wei Rong Chen. "Effect of Al and Zn Content on the Preparation of Semisolid Mg-Al-Zn Magnesium Alloy." Advanced Materials Research 842 (November 2013): 27–30. http://dx.doi.org/10.4028/www.scientific.net/amr.842.27.

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The thermodynamic parameter and microstructure of three contents as-cast magnesium alloys were researched by phase picture, X-ray diffraction and thermodynamic analysis, whereafter prepared semisolid billets by strain induced melt activation (SIMA). The microstructure observation and rheology parameter analysis demonstrated that add zinc content consumedly reduced formation temperature of semisolid microstructure, decreased isothermal holding time, and accelerated microstructure evolution. With increasing zinc content, the semisolid morphology better and better that is propitious to semisolid process. The analysis verified that on the one hand, with increasing aluminum and zinc content the melting point of compound and the nucleation temperature of liquid phase decreased, and the nucleation quantity of liquid phase increased; on the other hand, with increasing alloy content the as-cast microstructure much finer, which to caused much more fine and spherical semisolid microstructure.

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Vetter, J., I. Siller, and Zs Horvath. "Zinc Content of Sporocarps of Basidiomycetous Fungi." Mycologia 89, no. 3 (May 1997): 481. http://dx.doi.org/10.2307/3761041.

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Yudicheva, O. "Study of Zinc Content in Biofortified Tomato." Advanced Science Journal 2014, no. 7 (June 1, 2014): 15–18. http://dx.doi.org/10.15550/asj.2014.07.015.

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Vetter, J., I. Siller, and Zs Horváth. "Zinc content of sporocarps of basidiomycetous fungi." Mycologia 89, no. 3 (May 1997): 481–83. http://dx.doi.org/10.1080/00275514.1997.12026806.

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Casey, Clare E., Philip A. Walravens, K. Michael Hambidge, and A. Silverman. "The zinc content of human duodenal secretions." Nutrition Research 6, no. 6 (June 1986): 725–28. http://dx.doi.org/10.1016/s0271-5317(86)80013-6.

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Martins, Lemyr, Antonio Peres, Roberto Galéry, and Carlos Pereira. "Carbonate Content Reduction in Zinc Ore Concentrate." Journal of Materials Research and Technology 1, no. 1 (April 2012): 27–30. http://dx.doi.org/10.1016/s2238-7854(12)70006-6.

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Zachwieja, Z., J. Chlopicka, M. Schlegel-Zawadzka, P. Zagrodzki, J. Wypchlo, and M. Krośniak. "Evaluation of zinc content in children’s hair." Biological Trace Element Research 47, no. 1-3 (January 1995): 141–45. http://dx.doi.org/10.1007/bf02790111.

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Salkie, Mark L., Louis H. Honorè, and Fred Jajczay. "Copper and Zinc Content of Human Leiomyomas." Gynecologic and Obstetric Investigation 21, no. 4 (1986): 208–12. http://dx.doi.org/10.1159/000298956.

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Marotta, Antonio, Nicola Todisco, Antonino Di Toro, Roberto Toraldo, Giuseppe Ponte, and Laura Perrone. "Zinc content of lymphomonocytes in obese children." Nutrition Research 15, no. 10 (October 1995): 1411–15. http://dx.doi.org/10.1016/0271-5317(95)02013-l.

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Maclean, Kirsteen H., John L. Cleveland, and John B. Porter. "Cellular zinc content is a major determinant of iron chelator–induced apoptosis of thymocytes." Blood 98, no. 13 (December 15, 2001): 3831–39. http://dx.doi.org/10.1182/blood.v98.13.3831.

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Abstract Desferrioxamine (DFO) and the hydroxypiridinone (HPO) deferiprone (CP20) chelate iron as well as other metals. These chelators are used clinically to treat iron overload, but they induce apoptosis in thymocytes. Thymocyte apoptosis is potentiated by zinc deficiency, suggesting that these iron chelators may induce apoptosis by depleting stores of zinc. Exposure of murine thymocytes to either DFO or deferiprone resulted in significant reductions in the labile intracellular zinc pool. Moreover, increasing intracellular zinc levels, by chronic zinc dietary supplementation to mice or in vitro loading with zinc, abrogated deferiprone-induced murine thymocyte apoptosis. Bidentate hydroxypyridinones such as deferiprone interact with intracellular zinc pools in a manner distinct from that of DFO, which is a hexadentate iron chelator. Whereas deferiprone acts synergistically with the zinc chelator NNNN-tetrakis(2-pyridylmethyl)ethylenediamine (TPEN) to induce apoptosis, DFO does not. This difference is most likely due to the ability of HPOs but not DFO to “shuttle” zinc onto acceptors such as metallothioneins. By nature of its structure, DFO is larger than deferiprone and is thus less able to access some intracellular zinc pools. Additionally, metal complexes of DFO are more stable than those of HPOs and thus are less likely to donate zinc to other acceptors. The ability of deferiprone to preferentially access zinc pools was also demonstrated by inhibition of a zinc-containing enzyme phospholipase C, particularly when combined with TPEN. These findings suggest that bidentate iron chelators access intracellular zinc pools not available to DFO and that zinc chelation is a mechanism of apoptotic induction by such chelators in thymocytes.

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Henderson, L. M., G. J. Brewer, J. B. Dressman, S. Z. Swidan, D. J. DuRoss, C. H. Adair, J. L. Barnett, and R. R. Berardi. "Use of zinc tolerance test and 24-hour urinary zinc content to assess oral zinc absorption." Journal of the American College of Nutrition 15, no. 1 (February 1996): 79–83. http://dx.doi.org/10.1080/07315724.1996.10718568.

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Moura, Jeane de Oliveira, Maurisrael de Moura Rocha, Regina Lúcia Ferreira Gomes, Francisco Rodrigues Freire Filho, Kaesel Jackson Damasceno e Silva, and Valdenir Queiroz Ribeiro. "Path analysis of iron and zinc contents and others traits in cowpea." Crop Breeding and Applied Biotechnology 12, no. 4 (December 2012): 245–52. http://dx.doi.org/10.1590/s1984-70332012000400003.

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The objective of this study was to estimate the direct and indirect effects of agronomic and culinary traits on iron and zinc contents in 11 cowpea populations. Correlations between traits were estimated and decomposed into direct and indirect effects using path analysis. For the study populations, breeding for larger grain size, higher number of grains per pod, grain yield, reduced cooking time, and number of days to flowering can lead to decreases in the levels of iron and zinc in the grain. Genetic gains for the iron content can be obtained by direct selection for protein content by indirect effects on the number of grains per pod, 100-grain weight and grain yield. The positive direct effect of grain size and protein content on the zinc content indicates the possibility of simultaneous gain by combined selection of these traits.

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Wang, Jingtao, Yuhong Qi, Xu Zhao, and Zhanping Zhang. "Electrochemical Investigation of Corrosion Behavior of Epoxy Modified Silicate Zinc-Rich Coatings in 3.5% NaCl Solution." Coatings 10, no. 5 (April 30, 2020): 444. http://dx.doi.org/10.3390/coatings10050444.

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In order to develop waterborne silicate anticorrosive coatings to replace solvent-based anticorrosive coatings used widely in the shipping industry, epoxy modified silicate emulsions were synthesized with different contents of epoxy resin, then aqueous silicate zinc-rich coatings were prepared with the synthesized silicate emulsion, triethylamine, and zinc powder. The influence of the content of epoxy on the properties and chemical structure of the modified emulsion, mechanical properties of the silicate coatings, and corrosion behavior of the silicate zinc-rich coatings in 3.5% NaCl solution were investigated. The coating samples on steel were measured by the immersion test, Tafel polarization test, and electrochemical impedance spectroscopy (EIS) test with different immersion times. The results showed that epoxy modified silicate emulsions were successfully synthesized. With the increase in epoxy content, the viscosity and solid content of the modified emulsion increased, the impact resistance of the silicate coating rose, the pencil hardness decreased, but the adhesion was not affected. Epoxy modification can reduce, to a certain extent, the corrosion driving force of the zinc rich coating and increase the impedance of the zinc-rich coating, which decreases with the increase of immersion time in 3.5% NaCl solution. With the increase in the epoxy content, the impedance value of the zinc-rich coating increases, indicating that the ability of the coating to resist corrosive media is enhanced.

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Drozd, Łukasz, Monika Ziomek, Krzysztof Szkucik, Waldemar Paszkiewicz, Monika Maćkowiak-Dryka, Zbigniew Bełkot, and Michał Gondek. "Selenium, copper, and zinc concentrations in the raw and processed meat of edible land snails harvested in Poland." Journal of Veterinary Research 61, no. 3 (September 26, 2017): 293–98. http://dx.doi.org/10.1515/jvetres-2017-0039.

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Abstract Introduction: The objective of the present research was to carry out a comparative assessment of copper, zinc, and selenium concentrations in the meat of edible land snails collected in Poland (Helix pomatia, Cornu aspersum maxima, and Cornu aspersum aspersum), as well as to determine the effect of preliminary processing of Roman snails (Helix pomatia) on the content of the aforementioned elements. Material and Methods: In the first stage, determinations were made on unprocessed snail meat. In the second stage, the study focused on Roman snails and consisted in an additional evaluation of frozen meat after full processing. Zinc and copper contents were determined by flame atomic absorption spectrometry and the selenium content was established by graphite furnace atomic absorption spectrometry. Results: The selenium content differed significantly among all three species. The copper content in Roman snails differed significantly from that in farmed snails. No significant difference in the zinc level was noted among the three snail species. The selenium content in raw and processed meat of Roman snails did not show any significant difference while the copper and zinc level was significantly higher in processed meat samples. Conclusion: The present research on the meat of edible snails showed different levels of selenium, copper, and zinc, depending on the species, collection site, and subjection to processing.

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Öncan Sümer, Feride. "Soya Tane Verimi ve Protein Oranının Çinko Uygulaması ile Geliştirilmesi." Turkish Journal of Agriculture - Food Science and Technology 10, no. 11 (December 1, 2022): 2188–95. http://dx.doi.org/10.24925/turjaf.v10i11.2188-2195.5449.

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In this study, it was aimed to increase grain yield and grain zinc content by foliar application of zinc in different soybean varieties. In this study, umut-2002, altınay and cinsoy cultivars were used as material and foliar zinc application (0-60 kg ha-1) was applied to these cultivars. In the study, plant height, first pod height, leaf chlorophyll content, number of pods per plant, number of pods per pod, 100-seed weight, grain yield, grain protein content and grain zinc ratio were measured. This increase was also observed in grain protein content and grain zinc content. Among the varieties, the highest grain yield was obtained from the Umut-2002 variety, while the highest protein content was measured from the Altıny variety.

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Manzi, Pamela, Maria Gabriella Di Costanzo, and Mena Ritota. "Content and Nutritional Evaluation of Zinc in PDO and Traditional Italian Cheeses." Molecules 26, no. 20 (October 18, 2021): 6300. http://dx.doi.org/10.3390/molecules26206300.

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Zinc is an essential mineral which plays a key role in several important biological processes in the human body. The determination of its level in food matrices can contribute to the food quality characterization and to the adequacy of the diet. Animal food products generally have a higher zinc content compared to vegetables. Among them, dairy products consumption can provide a great contribution to the zinc reference intakes. In this study, different Italian cheeses (38 Protected Denomination of Origin and 9 Traditional) were evaluated for their zinc content. Cow cheeses generally showed the highest zinc content (1.83–7.75 mg/100 g cheese), followed by sheep cheeses (1.34–3.69 mg/100 g), and cheeses from mixed milk (0.39–4.54 mg/100 g). The only cheese from buffalo milk (Mozzarella di Bufala Campana PDO) showed a zinc content of 2.14 mg/100 g. The great variability in the zinc content observed among the samples is the result of the influence of several factors, such as the feeding system, the species (cow, sheep, goat, and buffalo), and the cheese-making. Most of the samples resulted in a great contribution (>10%) to the zinc Daily Reference Intake set by EU (10 mg/day), with only two samples contributing to less than 4%.

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Yang, Jinzhu, Tiantian Wang, Gang Lin, Mingzhu Li, Yanjiao Zhang, and Kangsen Mai. "The Assessment of Dietary Organic Zinc on Zinc Homeostasis, Antioxidant Capacity, Immune Response, Glycolysis and Intestinal Microbiota in White Shrimp (Litopenaeus vannamei Boone, 1931)." Antioxidants 11, no. 8 (July 29, 2022): 1492. http://dx.doi.org/10.3390/antiox11081492.

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This study aimed to assess dietary organic zinc on zinc homeostasis, antioxidant capacity, immune response, glycolysis and intestinal microbiota in white shrimp (Litopenaeus vannamei Boone, 1931). Six experimental diets were formulated: Control, zinc free; S120, 120 mg·kg−1 zinc from ZnSO4·7H2O added into control diet; O30, O60, O90 and O120, 30, 60, 90 and 120 mg·kg−1 zinc from Zn-proteinate added into control diet, respectively. The results showed that organic zinc significantly promoted zinc content and gene expression of ZnT1, ZIP11 and MT in the hepatopancreas and enhanced antioxidant capacity and immunity (in terms of increased activities of T-SOD, Cu/Zn SOD, PO, LZM, decreased content of MDA, upregulated expressions of GST, G6PDH, ProPO, LZM and Hemo, and increased resistance to Vibrio parahaemolyticus). Organic zinc significantly upregulated GluT1 expression in the intestine, increased glucose content of plasma and GCK, PFK and PDH activities of hepatopancreas, and decreased pyruvate content of hepatopancreas. Organic zinc improved intestinal microbiota communities, increased the abundance of potentially beneficial bacteria and decreased the abundance of potential pathogens. Inorganic zinc (S120) also had positive effects, but organic zinc (as low as O60) could achieve better effects. Overall, organic zinc had a higher bioavailability and was a more beneficial zinc resource than inorganic zinc in shrimp feeds.

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Lahučký, Ladislav, Daniel Bajčan, and Pavol Trebichalský. "Vertical Zinc Migration in Various Soil Types." Agriculture (Polnohospodárstvo) 57, no. 2 (June 1, 2011): 61–67. http://dx.doi.org/10.2478/v10207-011-0007-y.

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Vertical Zinc Migration in Various Soil TypesIn this contribution the zinc content in selected soil types and soil reaction on zinc loading in kinetic model conditions with knock-down columns filled with soil samples are evaluated. The total zinc content after their draining, finish and decomposition by HF + HClO4mixture and its fractions content in extract of 2 mol dm-3HNO3, in extract of 0.05 mol dm-3EDTA and in extract of 0.01 mol dm-3CaCl2using atomic absorption spectrometry method were determined.The knock-down columns filled with soil samples in model kinetic conditions were used for observation of zinc sorption measure. The maximal water capacity of soils was determined and then solution of 280 mg zinc (ZnSO4.2H2O) per kilogram of soil was applied. The zinc contents in extraction solutions 2 mol dm-3HNO3, 0.05 mol dm-3EDTA and 0.01 mol dm-3CaCl2in drained 0.05 m high soil columns by atomic absorption spectrometry method were determined.The obtained results were evaluated by mathematical-statistical methods - multiple range analysis and linear regression. Achieved data were compared to allowed limit values.The results show different behavior of individual soil types against zinc loading. The soils showed different properties, where zinc migration to the lower column layers was determined. The accent is given to zinc dynamics in neutral and acid soils. The limit value A (140 mg kg-1) was observed in Luvic Cambisol. The limit value A1 (40 mg kg-1) was observed in Eutric Regosol and Luvic Cambisol in upper layer of soil in column. The obtained results show high mobility of zinc in tested soils and thus its risk for ecosystems.

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Shamanin, V. P., P. Flis, T. V. Savin, S. S. Shepelev, O. G. Kuzmin, A. S. Chursin, I. V. Pototskaya, et al. "Genotypic and ecological variability of zinc content in the grain of spring bread wheat varieties in the international nursery KASIB." Vavilov Journal of Genetics and Breeding 25, no. 5 (September 10, 2021): 543–51. http://dx.doi.org/10.18699/vj21.061.

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Spring bread wheat is the staple crop in Western Siberia and Kazakhstan, a significant portion of which goes for export. Wheat breeding with a high level of zinc in wheat grain is the most cost-effective and environmentally friendly way to address zinc deficiency in the diet. The purpose of this work was to evaluate the contribution of the factors ‘location’ and ‘genotype’ in the variability of zinc content in wheat grain, and to identify the best varieties as sources of this trait for breeding. The research on screening zinc content in the wheat grain of 49 spring bread wheat varieties from the KazakhstanSiberia Spring Wheat Trial (KASIB) nursery was carried out at 4 sites in Russia (Chelyabinsk, Omsk, Tyumen, Novosibirsk) and 2 sites in Kazakhstan (Karabalyk and Shortandy) in 2017–2018. The content of zinc in wheat grain was evaluated at the Ionomic Facility of University of Nottingham in the framework of the EU project European Plant Phenotyping Network-2020. The analysis of variance showed that the main contribution into the general phenotypic variation of the studied trait, 38.7 %, was made by the factor ‘location’ due to different contents of zinc and moisture in the soil of trial sites; the effect of the factor ‘year’ was 13.5 %, and the effect of the factor ‘genotype’ was 8.0 %. The most favorable environmental conditions for accumulation of zinc in wheat grain were observed in the Omsk region. In Omsk, the average zinc content in all studied varieties was 50.4 mg/kg, with 63.7 mg/kg in the best variety ‘OmGAU 100’. These values are higher than the target values of the international program Harvest Plus. ‘Novosibirskaya 16’ (49.4 mg/kg), ‘Silach’ (48.4 mg/kg), ‘Line 4-10-16’ (47.2 mg/kg), ‘Element 22’ (46.3 mg/kg) and ‘Lutescens 248/01’ (46.0 mg/kg) were identified as being the best varieties. Significant possibilities for the production of wheat grain with high zinc content, which is in demand for the production of bread and pastry products with functional properties, were identified in the Western Siberian region.

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Thomidis, T., C. Tsipouridis, Z. Michailides, and E. Exadaktylou. "Effect of zinc on the leaf mineral content, yield, fruit weight and susceptibility of peaches to Monilinia laxa." Australian Journal of Experimental Agriculture 46, no. 9 (2006): 1203. http://dx.doi.org/10.1071/ea04237.

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The effect of zinc sulfate and zinc chelate on the leaf mineral content, yield and fruit weight of the peach variety Andross was investigated in a Greek orchard. Foliar application of a 25% zinc sulfate solution on 25 February and 2% zinc chelate solution on 20 May increased the zinc content of leaves and no toxicity was observed. In contrast, foliar application of 6% zinc sulfate and soil application of zinc sulfate at a rate of 200 g/tree on 25 February did not affect the zinc content of leaves. However, zinc sulfate applied to the soil at a rate of 200 g/tree significantly increased fruit yield. Statistically, the mean fruit weight and the susceptibility of fruit to Monilinia laxa did not differ between treatments. However, postharvest fruit susceptibility to M. laxa increased when fruit were dipped in a zinc chelate solution.

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Tripathy, Swapan K., and Bandita Sahoo. "Phenotyping and Association Analysis of Zinc Biofortified Rice Varieties for Grain Yield and Quality Traits." INTERNATIONAL JOURNAL OF PLANT AND ENVIRONMENT 7, no. 03 (November 25, 2021): 208–12. http://dx.doi.org/10.18811/ijpen.v7i03.4.

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A set of 25 test genotypes including 11 promising high zinc landraces, four zinc biofortified released varieties, six Zn-dense advance breeding lines, one OUAT rice variety, one zinc dense check variety “Chittimatyalu” and three low zinc mega varieties of rice (Swarna and Sambamahsuri) were assessed for grain Zn content and inter-relationship among seed yield and quality traits. P44 selection revealed highest Zn content (52.7ppm) followed by Basudha, Manika, Nikipankhia, ORCZ 75-3-1 and Tikimashuri with Zn content more than 40 ppm. Grain yield showed a significant positive correlation with a number of ear-bearing tillers m-2 and grain number panicle-1. Plant height exhibited a negative correlation with a number of effective bearing tillers m-2 and seed yield, but positively correlated with zinc content which seems to be the major hindrance for breeding semi-dwarf high yielding Zn-dense. The tall indica landraces such as Malliphulajhulli (43.8 ppm), Nikipankhia (42.8 ppm), Padmavati (31.3 ppm), Tikimahsuri (41.5 ppm), and Basudha (44.4 ppm) harbor high grain zinc content but revealed low yield potential. Transfer of zinc transporter genes available in the above tall indica types to semi-dwarf plant types may enrich the status of zinc content in grain.

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Dušová, Hana, Jan Trávníček, Zdeněk Peksa, Daniel Falta, and Václav Pálka. "Trace element content in market eggs in Bohemia." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 60, no. 6 (2012): 75–80. http://dx.doi.org/10.11118/actaun201260060075.

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The aim of this study was to analytically determine the content of iodine, copper, zinc and manganese in the yolk of consumer eggs in Bohemia in 2007 and 2008. Investigated eggs originated from six so called intensive farms with large flocks (118 eggs) and twelve backyard farms or small-flock establishments (136 eggs) from three administrative regions in Czech Republic. Eggs from intensive farms were obtained directly from the establishments, while eggs from backyard farms were purchased from private farmers. Spectrophotometric Sandell-Kolthoff method was used for determination of iodine content in egg yolk, while Cu, Zn and Mn levels were determined by the flame absorption spectrophotometric method (AAS). The average content in fresh egg yolk from intensive farms was determined to 0.9 ± 0.2 for iodine, 8.4 ± 2.1 of copper, 29.8 ± 6.9 of zinc and 1.2 ± 0.3 of manganese, all in mg·kg−1, as compared to yolk content from backyard farms with 0.4 ± 0.04 mg·kg−1 of iodine, 10.8 ± 2.9 of copper, 32.5 ± 6.9 of zinc and 1.5 ± 0.3 of manganese. Average content of copper, zinc and manganese was lower in egg yolks from intensive farms (P < 0.01) as compared to the egg yolks from backyard farms, while iodine content on the other hand was lower in eggs from backyard farms (P < 0.01).

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Yeschenko, Yu V., V. V. Novitsky, V. D. Bovt, V. A. Yeschenko, O. I. Urazova, and N. V. Grigorova. "Dithizone injuring action to blood granulocytes and basal parts of intestine crypts." Bulletin of Siberian Medicine 9, no. 5 (October 28, 2010): 24–27. http://dx.doi.org/10.20538/1682-0363-2010-5-24-27.

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It was shown, that dithizone injection to rats induced zinc deficiency in blood granulocytes and Paneth cells. Phase changes of zinc content were observed in the cells. First phase (primary decrease of cytochemically detected zinc content in the cells) was a result of intravital binding of this metal to dithizone. Second one (permanent partial increase of cell zinc content) was a result of decomposition of the product of intravital reaction. Third phase (secondary decrease of cell zinc concentration) was connected with cell necrosis. Dithizone injection to animals also induced cell secretory material deficiency.

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Liu, Lei, Zai Qin Wang, Liang Chen, and Zhen Li. "Preparation and Research on Anticorrosion Zinc-Rich Coating of Hydraulic Metal Structure." Advanced Materials Research 785-786 (September 2013): 887–91. http://dx.doi.org/10.4028/www.scientific.net/amr.785-786.887.

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The types and addition dose of zinc in the zinc-rich coating have a significant impact on the character of coating. Two types of the zinc powders and the amount of zinc were researched in this paper. It reveals that flaky zinc coating is better than the spherical zinc coating on corrosion performance, and the performance of the coating will be the best only when the solid content of zinc is reasonable. The results also show that optimal solid content of flaky zinc are 62.5%, 60% and 60.5% in the inorganic zinc-rich coating, epoxy zinc-rich coating and vinyl resin zinc-rich coating, respectively.

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Chang, Hong, Xin Bin Zhou, Shu Hui Yu, and Yong Xiang Zhou. "Effects of Nitrogen on Zinc Uptake, Accumulation and Partitioning of Wheat." Applied Mechanics and Materials 316-317 (April 2013): 250–53. http://dx.doi.org/10.4028/www.scientific.net/amm.316-317.250.

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Effects of nitrogen on uptake, accumulation and partitioning of zinc throughout the development of wheat were studied under pot-culture conditions. The results showed that under low zinc application (0.2 mg kg-1) the grain zinc content increased by 140% when nitrogen fertilizer increased from 50 mg kg-1 to 150 mg kg-1. Under high zinc application (5 mg kg-1) the grain zinc content increased by 61%. Increasing nitrogen application under low zinc fertilizer, the grain zinc mainly comes from the root zinc uptake. While increasing nitrogen application under high zinc fertilizer, the grain zinc mainly comes from the straw zinc remobilization.

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Lachman, J., A. Hejtmánková, D. Miholová, D. Kolihová, and P. Tluka. "Relations among alkaloids, cadmium and zinc contents in opium poppy (Papaver somniferum L.)." Plant, Soil and Environment 52, No. 6 (November 17, 2011): 282–88. http://dx.doi.org/10.17221/3442-pse.

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The effort of this work was to prove whether there exists any relation between stress factors caused by content of cadmium and zinc, and content and composition of opium alkaloids codeine, morphine, narcotine (noscapine) and papaverine contained in poppy seeds and capsules (Papaver somniferumL.) in 14 samples of 8 varieties cultivated in 8 localities in 2003. Contents of cadmium and zinc were measured by a method of electrothermic atomization and contents of selected individual alkaloids were determined by a HPLC method. The results were tested by the Spearman correlation coefficient and the Pearson linear correlation coefficient. With knowledge of the Spearman coefficient, positive relations narcotine – zinc and narcotine – cadmium in the poppy seed samples were found. In the samples of poppy capsules positive relation morphine – cadmium (in cv. Opal) and negative relation papaverine – zinc and codeine – zinc (in cv. Opal) were found. Those pairs have been tested by the Pearson correlation coefficient for a possibility to exclude the linear independency. This independency was excluded with the probability of over 95% in the relations narcotine – cadmium in the seeds and morphine – cadmium in the capsules. With the probability of over 97.5%, linear relations narcotine – zinc in seeds and papaverine – zinc in capsules were proved.

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Journal articles on the topic 'Zinc content'

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