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Journal articles on the topic 'Physicochemical characteristics'

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Author: Grafiati

Published: 4 June 2021

Last updated: 30 May 2022

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1

Gopala Krishna, A. G., and P. K. Prasanth Kumar. "Physicochemical characteristics of commercial coconut oils produced in India." Grasas y Aceites 66, no. 1 (January 22, 2015): e062. http://dx.doi.org/10.3989/gya.0228141.

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2

Liu, Xian-Wei, Guo-Ping Sheng, and Han-Qing Yu. "Physicochemical characteristics of microbial granules." Biotechnology Advances 27, no. 6 (November 2009): 1061–70. http://dx.doi.org/10.1016/j.biotechadv.2009.05.020.

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3

Crowe, N. L., and V. F. Rasper. "Physicochemical Characteristics of Chlorinated Pentosans." Canadian Institute of Food Science and Technology Journal 21, no. 4 (October 1988): 366. http://dx.doi.org/10.1016/s0315-5463(88)70921-9.

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4

Cui, W., and G. Mazza. "Physicochemical characteristics of flaxseed gum." Food Research International 29, no. 3-4 (April 1996): 397–402. http://dx.doi.org/10.1016/0963-9969(96)00005-1.

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5

Horčinová Sedláčková, V., J. Šimková, J. Brindza, O. Grygorieva, and O. Vergun. "HONEY INFLUENCE ON THE PHYSICOCHEMICAL CHARACTERISTICS OF WATER AND TEAS." Pomiculture and small fruits culture in Russia 57, no. 1 (July 8, 2019): 140–55. http://dx.doi.org/10.31676/2073-4948-2019-57-140-155.

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6

C.M. NOORJAHAN, C. M. NOORJAHAN. "Physicochemical Characteristics, Identification of Bacteria and Biodegradation of Industrial Effluent." Indian Journal of Applied Research 4, no. 8 (October 1, 2011): 678–82. http://dx.doi.org/10.15373/2249555x/august2014/178.

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7

Díaz, M. F., Y. Sánchez, M. Gómez, F. Hernández, M. C. Da C. Veloso, P. A. De P. Pereira, A. S. Mangrich, and J. B. De Andrade. "Physicochemical characteristics of ozonated sunflower oils obtained by different procedures." Grasas y Aceites 63, no. 4 (October 26, 2012): 466–74. http://dx.doi.org/10.3989/gya.073212.

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8

Olga, Escuredo, Seijo-Rodríguez Ana, M. Shantal Rodríguez-Flores, Míguez Montserrat, and M. Carmen Seijo. "Influence of weather conditions on the physicochemical characteristics of potato tubers." Plant, Soil and Environment 64, No. 7 (June 21, 2018): 317–23. http://dx.doi.org/10.17221/144/2018-pse.

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Physicochemical properties of the tuber as a commercial product differ according to environmental conditions of the area and the growing season. The knowledge about how weather affects these characteristics, allows estimating the correct selection of the cultivars in order to obtain the highest yields or desired physicochemical qualities. In this sense, the effect of the main meteorological factors on the physicochemical characteristics (size, texture, dry matter, soluble solids, phenols, flavonoids, carotenoids and inhibitor concentration (IC<sub>50</sub>)) of 8 potato cultivars growing in A Limia (North-West Spain) was analysed. The study was conducted during three consecutive years (2014–2016) and the results presented significant differences in the analyzed parameters between years (P < 0.05). Spearman’s correlations and principal component analysis showed that the tubers of 2014 (with colder weather conditions) had the highest phenol content and the lowest flavonoids and carotenoids content. Therefore, the temperature positively favoured the flavonoid content and carotenoid content (samples from 2016), although the size of potato tubers was considerably smaller.

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9

Medina-Rivero, Emilio, Luis Vallejo-Castillo, Said Vázquez-Leyva, Gilberto Pérez-Sánchez, Liliana Favari, Marco Velasco-Velázquez, Sergio Estrada-Parra, Lenin Pavón, and Sonia Mayra Pérez-Tapia. "Physicochemical Characteristics of Transferon™Batches." BioMed Research International 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/7935181.

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Transferon, a biotherapeutic agent that has been used for the past 2 decades for diseases with an inflammatory component, has been approved by regulatory authorities in Mexico (COFEPRIS) for the treatment of patients with herpes infection. The active pharmaceutical ingredient (API) of Transferon is based on polydispersion of peptides that have been extracted from lysed human leukocytes by a dialysis process and a subsequent ultrafiltration step to select molecules below 10 kDa. To physicochemically characterize the drug product, we developed chromatographic methods and an SDS-PAGE approach to analyze the composition and the overall variability of Transferon. Reversed-phase chromatographic profiles of peptide populations demonstrated batch-to-batch consistency from 10 representative batches that harbored 4 primary peaks with a relative standard deviation (RSD) of less than 7%. Aminogram profiles exhibited 17 proteinogenic amino acids and showed that glycine was the most abundant amino acid, with a relative content of approximately 18%. Further, based on their electrophoretic migration, the peptide populations exhibited a molecular mass of about 10 kDa. Finally, we determined the Transferon fingerprint using a mass spectrometry tool. Because each batch was produced from independent pooled buffy coat samples from healthy donors, supplied by a local blood bank, our results support the consistency of the production of Transferon and reveal its peptide identity with regard to its physicochemical attributes.

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10

Flanjak, Ivana, Ljiljana Priomorac, Blanka Bilić Rajs, Zlatko Puškadija, Marin Kovačić, and Ilijana Vukadin. "Physicochemical characteristics of Croatian royal jelly." Croatian journal of food science and technology 11, no. 2 (November 29, 2019): 266–71. http://dx.doi.org/10.17508/cjfst.2019.11.2.18.

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Due to its high nutritive value, royal jelly usage is increasing, both in human nutrition in native form and as bioactive component in other products (dietary supplements, medicines). The database and regulations on royal jelly characteristics are established in several countries, but not in Croatia. Physicochemical characteristics: moisture, protein content, pH value, total acidity, carbohydrate composition and 10-HDA content in 13 Croatian royal jelly samples were determined with the aim of getting insight to quality of royal jelly produced in Croatia. The obtained results showed that regarding 10-HDA content, one of the most important quality parameter, all samples fulfilled the international standard for royal jelly specifications. Moisture of three samples was higher than prescribed (69.5%, 76.3% and 72.0%, respectively) while one sample had slightly lower protein content than minimum 11% prescribed in international standard. Sucrose content in two royal jelly samples was higher than 3%. Statistically significant correlations were obtained between moisture and protein content, 10-HDA and total acidity as well as between fructose and glucose content. The results of this study will contribute to creation the database of Croatian royal jelly physicochemical characteristics and thus help in setting the royal jelly quality criteria at national level

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11

Wang, Li, Hongzhi Liu, Li Liu, and Qiang Wang. "Physicochemical and Processing Characteristics of Peanut." Advance Journal of Food Science and Technology 13, no. 3 (March 25, 2017): 119–27. http://dx.doi.org/10.19026/ajfst.13.4148.

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12

Tatehana, Haruka, Tomohiro Tochigi, Toshio Norikura, Atsushi Kon, and Hiromi Izawa. "Physicochemical Characteristics of Unripe Apple Starches." Nippon Shokuhin Kagaku Kogaku Kaishi 65, no. 10 (October 15, 2018): 478–82. http://dx.doi.org/10.3136/nskkk.65.478.

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13

Chae, Ho Jeong, In-Sik Nam, Sung Won Ham, and Suk Bong Hong. "Physicochemical characteristics of pillared interlayered clays." Catalysis Today 68, no. 1-3 (July 2001): 31–40. http://dx.doi.org/10.1016/s0920-5861(01)00320-0.

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14

Kumar, Anil. "Physicochemical Characteristics of Cerium(III) Caprylate." Physics and Chemistry of Liquids 28, no. 1 (June 1994): 57–62. http://dx.doi.org/10.1080/00319109408029541.

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15

Ng, Annie, Mary L. Parker, Adrian J. Parr, Paul K. Saunders, Andrew C. Smith, and Keith W. Waldron. "Physicochemical Characteristics of Onion (AlliumcepaL.) Tissues." Journal of Agricultural and Food Chemistry 48, no. 11 (November 2000): 5612–17. http://dx.doi.org/10.1021/jf991206q.

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16

Andreev, N. A., and V. I. Zhuchkov. "Physicochemical characteristics of chromium-containing ferroalloys." Russian Metallurgy (Metally) 2015, no. 9 (September 2015): 693–99. http://dx.doi.org/10.1134/s0036029515090049.

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17

Masclet, P., and H. Cachier. "Atmospheric particles. Physicochemical characteristics (in French)." Analusis 26, no. 9 (November 1998): 11–16. http://dx.doi.org/10.1051/analusis:199826090011.

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18

Aseeva, R. M., P. A. Sakharov, and A. M. Sakharov. "The physicochemical characteristics of oxidized polysaccharides." Russian Journal of Physical Chemistry B 3, no. 5 (October 2009): 844–50. http://dx.doi.org/10.1134/s1990793109050224.

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19

Kim, Hee Jung, Kyung Mi Yoo, Seul Lee, Kyung-Tack Kim, and In Kyeong Hwang. "Physicochemical Characteristics of Various Ginseng Seeds." Korean Journal of Food Science and Technology 45, no. 3 (June 30, 2013): 274–78. http://dx.doi.org/10.9721/kjfst.2013.45.3.274.

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20

E.S. Ali, Naima, Amir M. Awad Elkarim, Aisha SH.M. Fage, and Abdelazeem A.M. Nour. "Physicochemical Characteristics of Some Acacia Gums." International Journal of Agricultural Research 7, no. 8 (July 15, 2012): 406–13. http://dx.doi.org/10.3923/ijar.2012.406.413.

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21

Smolenskii, E. A., A. N. Ryzhov, A. L. Lapidus, and N. S. Zefirov. "Modeling of physicochemical characteristics of alkanes." Russian Chemical Bulletin 54, no. 5 (May 2005): 1084–99. http://dx.doi.org/10.1007/s11172-005-0363-8.

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22

Loftsson, Thorsteinn, Birna J. Ólafsdóttir, Hafrún Friðriksdóttir, and Sigriður Jónsdóttir. "Cyclodextrin complexation of NSAIDSs: physicochemical characteristics." European Journal of Pharmaceutical Sciences 1, no. 2 (June 1993): 95–101. http://dx.doi.org/10.1016/0928-0987(93)90023-4.

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23

Vatolin, N. A., A. L. Zavialov, and V. I. Zhuchkov. "Physicochemical characteristics of boron-containing ferroalloys." Journal of the Less Common Metals 117, no. 1-2 (March 1986): 91–95. http://dx.doi.org/10.1016/0022-5088(86)90015-9.

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24

Schooneveld-Bergmans, M. E. F., Y. M. van Dijk, G. Beldman, and A. G. J. Voragen. "Physicochemical Characteristics of Wheat Bran Glucuronoarabinoxylans." Journal of Cereal Science 29, no. 1 (January 1999): 49–61. http://dx.doi.org/10.1006/jcrs.1998.0220.

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25

Živkov Baloš, Milica, Sandra Jakšić, Nenad Popov, Suzana Vidaković Knežević, Dragana Ljubojević Pelić, Miloš Pelić, Vladimir Polaček, and Dubravka Milanov. "PHYSICOCHEMICAL CHARACTERISTICS OF SERBIAN HONEYDEW HONEY." Archives of Veterinary Medicine 12, no. 2 (December 31, 2019): 49–61. http://dx.doi.org/10.46784/e-avm.v12i2.62.

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Th e aim of this study was to investigate the composition and quality of Serbian honeydew honey. For this purpose, the physicochemical characteristics of 14 honeydew samples were analyzed. Th e physicochemical characteristics of all honeydew honeys from Serbia analyzed in this research can be considered to be within the parameters prescribed for honeydew in general. Th e sum value of glucose and fructose, the content of sucrose, water, hydroxymethylfurfural, acidity, and diastase activity were in line with European and national regulations for honey, for all investigated honeydew samples. Out of a total of 14 tested honey samples, 1 sample did not comply with the national regulations for honey regarding electrical conductivity. According to our results, in most of investigated samples the fructose/glucose (F/G) ratio was greater than 1.11 and glucose/water (G/W) ratio was close to 2. Th is means that they can be categorized as medium-crystallizing honeys. Th e results obtained in this study indicate excellent quality, absence of undesirable fermentation, acceptable freshness and proper manipulation of Serbian honeydews.

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26

Huang, Y., G. G. Fuller, and V. Chandran Suja. "Physicochemical characteristics of droplet interface bilayers." Advances in Colloid and Interface Science 304 (June 2022): 102666. http://dx.doi.org/10.1016/j.cis.2022.102666.

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27

Atanassova, J., YurukovaL, and M. Lazarova. "Pollen and inorganic characteristics of Bulgarian unifloral honeys." Czech Journal of Food Sciences 30, No. 6 (December 1, 2012): 520–26. http://dx.doi.org/10.17221/44/2012-cjfs.

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The melissopalynological characteristics, three main physicochemical parameters (water content, pH, and electrical conductivity), and 19 macro- and microelements contents of 15 honey types from throughout Bulgariathat were collected from 2006 to 2009 were evaluated. The main honeys studied came from Robinia pseudoacacia L., Helianthus annuus L., Brassica spp., Tilia spp., and Vicia spp. The botanical origins of unifloral honey samples were identified as Lotus spp., Coriandrum sativum L., Daucus-type, Stachys-type, Salix spp., Prunus spp., Castanea sativa Mill., Paliurus spina-christi Mill., Sophora japonica, and Amorpha spp. Based on the physicochemical parameters and elements contents, one sample with high a percentage of Trifolium spp. pollen was identified as honeydew honey.

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28

Musa, Zainab Jawdat. "Assessment of Physicochemical Characteristics of Groundwater Quality of Industrial Area, Aurangabad. (Maharashtra)." International Journal of Scientific Research 2, no. 11 (June 1, 2012): 433–34. http://dx.doi.org/10.15373/22778179/nov2013/143.

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29

조전호, 유선미, 한혜민, 김하윤, 박희선, and 박보람. "Physicochemical Characteristics of Traditional Glutinous Rice Gochujang." FoodService Industry Journal 9, no. 3 (December 2013): 103–11. http://dx.doi.org/10.22509/kfsa.2013.9.3.009.

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30

Chang, Min-Sun, Ae-Rang Lee, Moon-Cheol Jeong, and Gun-Hee Kim. "Physicochemical Characteristics of the Organically Grown Blueberry." Journal of The Korean Society of Food Culture 30, no. 4 (August 30, 2015): 463–67. http://dx.doi.org/10.7318/kjfc/2015.30.4.463.

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31

Piłat, Beata, and Ryszard Zadernowski. "Physicochemical Characteristics of Linseed Oil and Flour." Polish Journal of Natural Science 25, no. 1 (March 1, 2010): 106–13. http://dx.doi.org/10.2478/v10020-010-0008-8.

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32

Zitouni, I., K. E. Aiadi, O. Bentouila, M. Benaida, H. Bouguettaia, and Z. Ayat. "The Physicochemical Characteristics of Silicon-Germanium Nanoclusters." Journal of Nano- and Electronic Physics 12, no. 5 (2020): 05001–1. http://dx.doi.org/10.21272/jnep.12(5).05001.

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33

Dziki, D., A. Miś, B. Gładyszewska, J. Laskowski, S. Kwiatkowski, and U. Gawlik-Dziki. "Physicochemical and grinding characteristics of dragonhead seeds." International Agrophysics 27, no. 4 (December 1, 2013): 403–8. http://dx.doi.org/10.2478/intag-2013-0010.

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Abstract The results of investigations on the physicochemical and grinding characteristics of Moldavian dragonhead seeds are presented. The data obtained showed that the physical properties (average size, sphericity, surface area, 1 000 seed mass, dynamic angle of repose, coefficient of static friction, and bulk and true densities) of the white and blue form of dragonhead seeds were not significantly different. Both forms of dragonhead showed similar levels of protein (average of 21%), whereas the blue form of dragonhead had a lower fat content (average of 23.1%) and higher mucilage content (13.35%) in comparison to the blue form of seed (24.6 and 9.95%, respectively). Antioxidant capacity of dragonhead seeds was comparable for both forms and averaged about 40%, which corresponded to EC50 values of 0.12 and 0.13 mgml-1 for the white and blue forms, respectively. The grinding material showed similar particle size distribution of ground material for both forms of dragonhead seeds. The lowest values of specific grinding energy were obtained for the white form of dragonhead seeds, those for the blue form were significantly higher. Grinding of dragonhead seeds using a screen 2.0 mm mesh size caused screen hole clogging. This problem did not occur when dragonhead seeds were mixed with wheat grain.

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34

Adhikary, Jayati. "Physicochemical Characteristics of Inland Aquaculture: A Review." International Journal of Pure & Applied Bioscience 7, no. 4 (October 5, 2019): 166–73. http://dx.doi.org/10.18782/2320-7051.7695.

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35

Kiely, L. J., N. F. Olson, and G. Mortensen. "The physicochemical surface characteristics of Brevibacterium linens." Colloids and Surfaces B: Biointerfaces 9, no. 6 (September 1997): 297–304. http://dx.doi.org/10.1016/s0927-7765(97)00037-4.

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36

Tang, Sheng-Qiu, Qing-Yan Jiang, Yong-Liang Zhang, Xiao-Tong Zhu, Gang Shu, Ping Gao, Ding-Yuan Feng, Xiu-Qi Wang, and Xiao-Ying Dong. "Obestatin: Its physicochemical characteristics and physiological functions." Peptides 29, no. 4 (April 2008): 639–45. http://dx.doi.org/10.1016/j.peptides.2008.01.012.

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37

Girard, B., and T. G. Kopp. "Physicochemical Characteristics of Selected Sweet Cherry Cultivars." Journal of Agricultural and Food Chemistry 46, no. 2 (February 1998): 471–76. http://dx.doi.org/10.1021/jf970646j.

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38

El-Didamony, H., K. A. Khalil, and M. S. El-Attar. "Physicochemical characteristics of fired clay-limestone mixes." Cement and Concrete Research 30, no. 1 (January 2000): 7–11. http://dx.doi.org/10.1016/s0008-8846(99)00181-7.

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39

Choi, S. S., and J. M. Regenstein. "Physicochemical and Sensory Characteristics of Fish Gelatin." Journal of Food Science 65, no. 2 (March 2000): 194–99. http://dx.doi.org/10.1111/j.1365-2621.2000.tb15978.x.

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40

OGISO, Taro, Tadatoshi TANINO, Masahiro IWAKI, Osamu MURAOKA, and Genzoh TANABE. "Physicochemical and Hydrolytic Characteristics of Phenytoin Derivatives." Biological & Pharmaceutical Bulletin 17, no. 10 (1994): 1425–29. http://dx.doi.org/10.1248/bpb.17.1425.

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41

LIMA, VERA LÚCIA ARROXELAS GALVÃO DE, ENAYDE DE ALMEIDA MÉLO, and LUECI DOS SANTOS LIMA. "PHYSICOCHEMICAL CHARACTERISTICS OF BILIMBI (Averrhoa bilimbi L.)." Revista Brasileira de Fruticultura 23, no. 2 (August 2001): 421–23. http://dx.doi.org/10.1590/s0100-29452001000200045.

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The aimed of this work was to investigate the effects of maturity stages on the physicochemical characteristics of bilimbi (Averrhoa bilimbi L.) which were cultivated in Recife-PE. During one year, the fruits were harvested from five different trees (unidentified variety) in mature and half-mature stages. They were analysed on total soluble solids (TSS), oxalic acid and vitamin C. Ripe fruits had the highest levels of TSS and vitamin C and lowest levels of oxalic acid, independently of weather conditions. The results showed that maturity stage influenced on physicochemical characteristics of bilimbi fruits.

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42

Peralta Rodríguez, René D., Claudia T. Saucedo Salazar, and Isabel C. Valdés Silva. "Physicochemical Characteristics of Commercial Aluminum Hydroxycarbonate Gels." Drug Development and Industrial Pharmacy 21, no. 11 (January 1995): 1285–302. http://dx.doi.org/10.3109/03639049509063018.

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43

Sagbas, H. I., S. Ercişli, and G. Ilhan. "Physicochemical characteristics of local germplasm of fig." Acta Horticulturae, no. 1289 (September 2020): 291–94. http://dx.doi.org/10.17660/actahortic.2020.1289.41.

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44

Olarte, C., S. Sanz, E. Gonzalez-Fandos, and P. Torre. "Microbiological and physicochemical characteristics of Cameros cheese." Food Microbiology 16, no. 6 (December 1999): 615–21. http://dx.doi.org/10.1006/fmic.1999.0276.

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45

Kiely, L. Joseph, and Norman F. Olson. "The physicochemical surface characteristics of Lactobacillus casei." Food Microbiology 17, no. 3 (June 2000): 277–91. http://dx.doi.org/10.1006/fmic.1999.0311.

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46

Bourdo, Shawn E., Radwan Al Faouri, Robert Sleezer, Zeid A. Nima, Andersen Lafont, Bijay P. Chhetri, Mourad Benamara, Betty Martin, Gregory J. Salamo, and Alexandru S. Biris. "Physicochemical characteristics of pristine and functionalized graphene." Journal of Applied Toxicology 37, no. 11 (July 5, 2017): 1288–96. http://dx.doi.org/10.1002/jat.3493.

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47

Joshi, M., P. Aldred, S. McKnight, J. F. Panozzo, S. Kasapis, R. Adhikari, and B. Adhikari. "Physicochemical and functional characteristics of lentil starch." Carbohydrate Polymers 92, no. 2 (February 2013): 1484–96. http://dx.doi.org/10.1016/j.carbpol.2012.10.035.

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48

Sun-a, Kang, Kwon Ye-seul, Jeong Seok-tae, Choi Han-seok, Im Bo-ra, Yeo Su-hwan, and Kang Ji-eun. "Physicochemical characteristics of beer with rice nuruk." Journal of Applied Biological Chemistry 63, no. 3 (September 30, 2020): 229–34. http://dx.doi.org/10.3839/jabc.2020.031.

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49

Umbetkaliyeva, К. M., G. K. Vassilina, А. К. Abdrassilova, А. R. Khaiyrgeldinova, Т. К. Vassilina, Zh Y. Zakirov, М. Kh Taliyeva, and А. К. Kaldybayeva. "SYNTHESIS AND PHYSICOCHEMICAL CHARACTERISTICS OF MESOPOROUS ALUMINOSILICATES." SERIES CHEMISTRY AND TECHNOLOGY 6, no. 444 (December 15, 2020): 22–29. http://dx.doi.org/10.32014/2020.2518-1491.94.

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In the article, the synthesis of mesoporous aluminosilicates was carried out according to the developed methods, in which tetraethylorthosilicate Si(OC2H5)4 was used as a source of silicon, secondary aluminum butoxide (sec-BuO)3Al and aluminum triisopropoxide Al(i-OPr)3 were used as aluminum's sources. The synthesis of mesostructured aluminosilicate is based on the method of copolycondensation of silicon and aluminum sources in the presence of alcohol. Hexadecylamine (HDA, C16H33NH2) was used as a template for the formation of a porous structure. The physicochemical characteristics of the synthesized structured mesoporous aluminosilicates have been studied. It was found that the synthesized materials MAS-1 and MAS-2 possess high specific surface area from 511 to 1170.0 m2/g. The presence of a mesoporous and ordered structure in the synthesized aluminosilicates is confirmed by the data of low-temperature nitrogen adsorption/desorption, X-ray diffraction and FT-IR. To determine the relative strength of Brønsted and Lewis acid sites on the surface of mesoporous aluminosilicates, diffuse reflectance infrared Fourier transform spectroscopy (DRIFT) of adsorbed pyridine samples was carried out. DRIFT analysis data demonstrated a majority of Lewis acid sites on the surface of the synthesized materials. We are currently studying the possibility of applying these materials as acidic components of bifunctional catalysts for petrochemical N E W S OF THE NATIONAL ACADEMY OF SCIENCES OF THE REPUBLIC OF KAZAKHSTAN SERIES CHEMISTRY AND TECHNOLOGY ISSN 2224-5286 https://doi.org/10.32014/2020.2518-1491.94 Volume 6, Number 444 (2020), 22 – 29 UDC 665.64.097.3 MRNTI 61.51.17, 61.51.19 К.M. Umbetkaliyeva1,2, G.K. Vassilina1,2, А.К. Abdrassilova1 , А.R. Khaiyrgeldinova2, Т.К. Vassilina2,3, Zh.Y. Zakirov1, М.Kh. Taliyeva2 , А.К. Kaldybayeva2 1al-Farabi Kazakh National University, Almaty, Kazakhstan; 2SRIfor New Chemical Technologies and Materials, Almaty, Kazakhstan; 3Кazakh National Agrarian University, Almaty, Kazakhstan. E-mail: kamilla.u.m21@mail.ru, v_gulzira@mail.ru, albina06.07@mail.ru, asyltas_2008@mail.ru, v_tursunai@mail.ru, abuzhassulan@gmail.com, taliyevamadina@gmail.com, kaldybayeva.assylai@gmail.com SYNTHESIS AND PHYSICOCHEMICAL CHARACTERISTICS OF MESOPOROUS ALUMINOSILICATES Abstract. In the article, the synthesis of mesoporous aluminosilicates was carried out according to the developed methods, in which tetraethylorthosilicate Si(OC2H5)4 was used as a source of silicon, secondary aluminum butoxide (sec-BuO)3Al and aluminum triisopropoxide Al(i-OPr)3 were used as aluminum's sources. The synthesis of mesostructured aluminosilicate is based on the method of copolycondensation of silicon and aluminum sources in the presence of alcohol. Hexadecylamine (HDA, C16H33NH2) was used as a template for the formation of a porous structure. The physicochemical characteristics of the synthesized structured mesoporous aluminosilicates have been studied. It was found that the synthesized materials MAS-1 and MAS-2 possess high specific surface area from 511 to 1170.0 m2/g. The presence of a mesoporous and ordered structure in the synthesized aluminosilicates is confirmed by the data of low-temperature nitrogen adsorption/desorption, X-ray diffraction and FT-IR. To determine the relative strength of Brønsted and Lewis acid sites on the surface of mesoporous aluminosilicates, diffuse reflectance infrared Fourier transform spectroscopy (DRIFT) of adsorbed pyridine samples was carried out. DRIFT analysis data demonstrated a majority of Lewis acid sites on the surface of the synthesized materials. We are currently studying the possibility of applying these materials as acidic components of bifunctional catalysts for petrochemical processes.

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Krithika, V., and S. Radhai Sri. "Physicochemical and Nutritional Characteristics of Chilli Cultivars." ScieXplore: International Journal of Research in Science 1, no. 2 (December 1, 2014): 117. http://dx.doi.org/10.15613/sijrs/2014/v1i2/67550.

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