Тези доповідей, матеріали конференцій
Постійне посилання на розділhttps://dspace.nuft.edu.ua/handle/123456789/7373
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16 результатів
Результати пошуку
Документ Investigation of chemical transformations in corn oil during the heat treatment(2020) Korobka, Yuliya V.; Kovaleva, SvetlanaДокумент Study of chemical transformations in sunflower oil during heat treatment by NMR 1H spectroscopy(2019) Korobka, Yuliya V.; Pashkevych, Maksym; Kovaleva, SvetlanaДокумент Production technology of sugarglycerides (food additive E474)(2019) Korobka, Yuliya V.; Haletiy, Olga; Kovaleva, SvetlanaДокумент Determination of fatty acids profile of sunflower oil samples by NMR 1H spectroscopy(2018) Kovaleva, Svetlana; Mazur, Larisa; Hutsalo, InnaДокумент Determination of Fatty Acid Profile of Sunflower Oil Samples by NMR 1H Spectroscopy(2018) Kovaleva, Svetlana; Mazur, Larisa; Miroshnikov, Oleg; Hutsalo, InnaSunflower oil with a high content of oleic acid (Omega-9) and a sufficiently low content of polyunsaturated linoleic acid (Omega-6) is characterized by a lower nutritional value but greater chemical stability at high temperatures and in the presence of oxidizing agents, therefore, it has several advantages for the food and chemical industries, and also as a raw material for the production of biofuels. The determination of the TAG composition o f oil is very important, because due to selection there is a large number o f sunflower varieties. The spectra o f oil samples extracted from seeds o f various sunflower varieties were investigated by NMR 1H spectroscopy to determine fatty acids composition. This method based on estimation and comparison the proton integral intensities of allylic and bis-allylic CH2 groups with intensity o f glycerol protons that allows to determine the amounts o f these unsaturated fatty acids. Each oil sample obtained has its individual TAG profile determining its physicochemical properties and nutritional value. Method 1H-NMR spectroscopy is rapid and non-destructive, so it is perspective for determination o f oil fatty acid composition.Документ Synthesis of 1,2-dihydrothieno-1λ5-[2,4,1]oxazaphosphine(2018) Kovaleva, Svetlana; Mazur, Larisa; Zinchenko, NataliaДокумент NMR 'H Spectroscopy for Determination of Oxidation Products in Sunflower Oil(2018) Nikolayenko, Bogdana; Pashkevych, Maksym; Kovaleva, SvetlanaДокумент NMR 'H Spectroscopy for the Study of Fatty Acids Composition of Sunflower Oil(2018) Korobka, Yuliya V.; Kovaleva, SvetlanaДокумент Synthesis of Six-Membered Thiophene-Annelated Heterocycle Containing P and N atoms(2017) Kovaleva, Svetlana; Simurova, Natalia; Mazur, LarisaДокумент Determination of Sunflower Oil Oxidation Products by NMR 1H Spectroscopy(2017) Kovaleva, Svetlana; Mazur, Larisa