Тези доповідей
Постійне посилання колекціїhttps://dspace.nuft.edu.ua/handle/123456789/7497
Переглянути
3 результатів
Результати пошуку
Документ Influence of sunflower lecithin on conformational changes in dough and bread from wheat flour(2023) Shevchenko, Anastasiia; Drobot, Vira; Litvynchuk (Vorontsova), SvitlanaThe use of food additives of various direction became widespread to improve the quality of bakery products. One of these additives is lecithin, soy lecithin is used to a greater extent. However, given the residual amount of phytoestrogens in it, sunflower lecithin should be preferred. The spectrum of wheat flour has mainly a higher intensity of reflection than the spectrum of sunflower lecithin, however, this tendency is broken in some sections of wavelengths. The reflection spectra of dough and bread samples are located below the spectra of raw materials, with the exception of some extrema, the reflection coefficient decreased accordingly. At a wavelength of 2100 nm, which characterizes protein structural groups, there is a minimum extremum for all samples except lecithin, the value of the relative reflectance of the flour sample is 0.49, the dough after kneading is 0.34, after fermentation is 0.24, bread is 0. 21. This can be explained by the fact that lecithin does not participate in the formation of gluten and causes a decrease in its amount. Considering the valuable properties of sunflower lecithin both for improving the properties of the dough and for the human body, it is a promising raw material for use in bakery production.Документ Conformational changes in dough with pumpkin protein concentrate for wheat flour bakery products(2023) Shevchenko, Anastasiia; Litvynchuk (Vorontsova), SvitlanaThe range of food products, in particular bakery products, is represented mostly by traditional types with a rather low nutritional and biological value. The solution to this problem can be the inclusion in the formulation of such products of sources of complete proteins, such as pumpkin protein concentrate, which, in combination with the lipid component, will be useful for people with diseases of the gastrointestinal tract, such as irritable bowel syndrome. The reflection spectra of wheat flour and pumpkin protein concentrate showed slight differences. The spectrum of wheat flour had a higher reflection intensity. Samples of dough after fermentation had a lower reflectance along the entire length of the spectrum than raw materials and dough after kneading. The infrared spectra of the bread samples were compared to the corresponding dough samples after fermentation. A characteristic extremum characterizing the amino acid composition was observed at a wavelength of 2294 nm. Taking into account the mentioned transformations and the ability of pumpkin protein concentrate to significantly increase the biological value of bread, its use in the production technology of wheat bakery products is promising and relevant in order to give bread healthy properties.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).