Тези доповідей, матеріали конференцій
Постійне посилання на розділhttps://dspace.nuft.edu.ua/handle/123456789/7373
Переглянути
6 результатів
Результати пошуку
Документ 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 A new method of analysis of granulated hops(2013) Litvynchuk (Vorontsova), Svitlana; Nosenko, Volodymyr; Meletyev, Anatoly; Hutsalo, InnaThe diffuse reflectance spectra of hops were investigated in order to create a rapid method of assessing the quality of granulated hops with simultaneous determination of key indicators (without the use of chemicals and prolonged dry). Researches have been conducted on the infrared analyzer "Infrapid-61" in the wavelength range 1,33-2,37 microns.Документ Determination of presence of the water-retainer sodium triphosphate in minced meat with method of near-IR spectroscopy(2017) Melnichenko, Georgii; Hutsalo, Inna; Kovaleva, SvetlanaAddition of sodium triphosphate (E451) to meat semi-finished products improves the moisture-absorbing properties of muscle tissue, but worsens the absorption of calcium by human body. Therefore, content of sodium triphosphate must be controled. This express method of non-destructive IR spectroscopy, provided that the spectrograph has been pre-calibrated, allows to detect objectively the presence o f sodium triphosphate (E451) in minced meat.Документ Determination of moisture content in sunflower meal by reflection NIR spectroscopy(2016) Hutsalo, Inna; Litvynchuk (Vorontsova), Svitlana; Nosenko, Tamara; Nosenko, VolodymyrThus, it is possible to determine moisture content of sunflower meal using obtained calibration equations and wavelengths mentioned above. The study of reflectance spectra peculiarities makes it possible to more widely use NIR spectroscopy method for rapid determination of fat, protein, moisture and other substances content in oilseeds, in their byproducts and meals (whether it be storage or processing stages).Документ Use of reflection spectra in the near infrared region for oil and fat analysis of products(2015) Hutsalo, Inna; Litvynchuk (Vorontsova), Svitlana; Okopna, YanaSchroth indispensable as high protein additives in the production of fodder for large cattle, pigs, birds, because it contains natural proteins, fiber, vitamins E and C, potassium, phosphorus and other minerals. NIR analyzer makes it possible to automatically calculate the first and second derivative reflectance spectra. Comparison charts showed that more extremes there is depending on the graph of the second derivative of reflection coefficient, that is, through this analysis can be experimentally determine the effect of vibration spectra of other chemical bonds to the formation of the main analytical strips for further quantitative spectral analysis.