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Постійне посилання колекціїhttps://dspace.nuft.edu.ua/handle/123456789/7522
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Документ The use of glass transition temperature in forecasting of whey powder storage stability, obtained with the use of electro-spark treatment(2016) Kochubei-Lytvynenko, Oksana; Mikhailik, Vyacheslav; Ukrainets, AnatoliyThis study investigated the behavior during storage of dry whey obtained using different approaches that prevent caking (adding silicon dioxide, electro-spark treatment of whey). Forecasting the stability of quality whey powder was carried out based on a glass transition temperature.We showed that the highest glass transition temperature (+18.5 °С) and, subsequently, smallest difference between product temperatures and glass transition temperature were discovered in dry whey, obtained with the use of electro-spark treatment, which proves its stability while in storage.We found that the other samples of dry whey under normative storing terms (from 0 till 20 °С) are predominantly in rubbery state, which can negatively influence on stability of the product while in storage. Based on the glass transition temperature we determined that electro-spark treatment in technology of whey powder allowed reaching anti-caking effect due to physicochemical processes resulting from electro-spark charges. This was proved by calculationstickiness and caking sensibility index and the degree of caking (to 2 %).Документ Nanovoids in the milkfat and its high-melting components(2002) Rashevska, Tamara; Gulyy, Ivan; Ukrainets, Anatoliy; Nishchenko, M.; Lihtorovich, S.; Buzaneva, E.The nanovoids in the fatty acid triglycerides and in the milkfat are studied by means of tlie positron annihilation spectroscopy. The mean radii of the nanovoids are measured using annihilation characteristics of the hydrogen-like positronium atoms, which annihilate inside the nanovoids.Нанопустоти тригліцеридів жирних кислот і молочного жиру, вивчалися за допомогою ПАС.Середні радіуси нанопустот оцінювали за допомогою аннігіляційних характеристик гідрогеноподібних атомів, які аннігілюють всередині нанопустот.Документ Identification of moisture nanoparticles in the butter sub-microstructure(2002) Rashevska, Tamara; Gulyy, Ivan; Ukrainets, Anatoliy; Nischenko, Michael; Lihtorovich, S.; Buzaneva, E.Formation of sub-microstructure, including the nucleatiion and growth of ultradisperse water particles in the butter, is studied by means of electron microscopy.