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Документ Application of the Inverse Chronopotentiometry Method to Control the Content of Toxic Elements in Refining Production(2021) Melnyk, Oksana; Galimova, V.; Radzievska, Irina; Marynin, AndriyUkraine is one of the world leading exporters of sunflower oil. An important safety indicator is the content of toxic elements in it, which should not exceed the maximum permissible concentrations. Toxic elements entering the human body reduce the functions of individual systems and organs and lead to immunodeficiency. The toxic elements by which food products are controlled include copper (Cu), zinc (Zn), iron (Fe), cadmium (Cd), lead (Pb), arsenic (As), and mercury (Hg).Документ Evaluation of oxidity resistance of milk-containing products based on blending of vegetable oils(2021) Belemets, Tatiana; Radzievska, Irina; Tochkova, Oksana; Yushchenko (Gonchar), Natalia; Bandura (Kuzmyk), Uliana; Mykhalevych, ArturIt is known that one of the main causes of spoilage of fats (in particular vegetable fats), as well as products made with their use, is an increase in acid and peroxide numbers. Physicochemical indicators have a significant impact not only on the quality and organoleptic characteristics of the product, but also on its safety. For this purpose, the dependence of the indicators of acid and peroxide numbers of the created blend of vegetable oils in the technologies of milk-containing products during storage has been investigated. The object of research is experimental samples of a three-component blend of vegetable oils and milk fat isolated from milk-containing curd paste and milk-containing sour cream sauce. The subject of research is the dynamics of the growth of acid and peroxide numbers of samples and changes in their organoleptic quality indicators. The obtained data on the kinetics of oxidation of a blend of vegetable oils indicate that the increase in acid and peroxide numbers during the studied shelf life does not differ in intensity. The average threshold for an increase in acid and peroxide numbers is insignificant and amounts to 0.02–0.03 mgKOH/h and 0.2–0.21 mmol1/2O/kg for 5 days. In accordance with the obtained results of the kinetics of oxidation of the released fat of milk-containing curd paste, there is a slight increase in acid and peroxide numbers, namely: at the end of 7 days – up to 0.3 mgKOH/h and 1.9 mmol1/2O/kg, respectively, and in at the end of 10 days– up to 0.32 mgKOH/h and 2.3 mmol1/2O/kg. Based on the obtained results of the kinetics of oxidation of the released fat from the milk-containing sour cream sauce, there is a tendency to a gradual increase in the acid and peroxide numbers with an increase in the oxidation time. It is noted that the maximum values of acidic – 0.3 mgKOH/h and peroxide numbers – 2.2 mmol1/2O/kg at the end of the shelf life of 21 days are reached. According to the results obtained for the organoleptic evaluation of experimental samples of the blend and the released fat from milk-containing products, no significant changes were found during the studied shelf life.Документ Investigation of vegetable oils to oxidative degradation of varying degrees of saturation with tocopherol(2018) Melnyk, Oksana; Radzievska, Irina; Galenko, Oleg; Peshuk, LudmilaThe content of tocopherol isomers and their activity in oils with different depth of refining-by pressing up unrefined and refined deodorized. It is shown that the isomeric composition of tocopherols influence on the rate and kinetics of elongation, and termination of radical chain oxidation. The relationship between the fatty acid composition of the oil, in particular the content of unsaturated fatty acids, the flow rate of peroxidation reactions and content of oxidation inhibitors. It is shown that a critical factor when braking oxidation reactions is the inhibitory effect of tocopherol, namely its greatest when the total content of a-isomer content.Документ Optimization of composition of blend of natural vegetable oils for the production of milk-containing products(2016) Belemets, Tatiana; Yushchenko (Gonchar), Natalia; Lobok, Alexey; Radzievska, Irina; Polonskaya, TatianaНатуральні рослинні олії (кукурудзяна, рапсова та олія волоського горіху) були обрані для створення купажу з оптимізованим жирнокислотним складом на їх основі. Даний вибір олій є обґрунтованим відповідно до їх фізико-хімічних характеристик, жирнокислотного складу, сумісністю з молочною основою, біологічної цінності та органолептичними показниками. Розроблений купаж натуральних рослинних олій повинен бути використаний для поєднання з молочними продуктами масового вжитку з метою оптимізації їх жирнокислотного складу. The natural vegetable oils (corn, rapeseed and walnut oils) were selected to create the blend, optimized by the fat and acid composition on their basis. This choice of oils is substantiated according to their physical and chemical characteristics, the fat and acid composition, and compatibility with the milk base, availability, and organoleptic parameters. The developed blend of natural vegetable oils should be combined with dairy products of mass consumption for the optimization of their fat and acid composition.Документ Mathematical development program for calculation of fatty acid composition blend of vegetable oils(2016) Belemets, Tatiana; Yushchenko (Gonchar), Natalia; Lobok, Alexey; Radzievska, Irina; Polonskaya, TatianaThe method of solution of the problem of polyunsaturated fatty acids (PUFA) lack in milk products is offered in the work. It is offered to create the milk-containing products (sour cream product) with adjusted fatty acid composition. The possibility of replacement of the mass part of milk fat (50 %) by the blend of natural vegetable oils was studied.Документ Modeling composition of the mixed oils by blending(2014) Zholdosh, Maria; Shemanska, Evgenia; Radzievska, IrinaIn order to enrichment food ration essential fatty acids of the population investigated blending of vegetable oils which give a balanced composition of polyunsaturated fatty acids, and conventional flavor characteristicsДокумент Research of content biologically active components of oils(2013) Lazarenko, Tatiana; Radzievska, Irina; Gromova, ElenaLiposoluble vitamins constitute an important part of vegetable oils. Fats contain liposoluble vitamins A, D, Е, К in the active and nonactive form (as provitamins). Eight connections are known under the name of the vitamin Е: four connections of tocopherol (α, β, γ and δ) and four connections of tocotrienols (α, β, γ and δ). Alpha-tocopherol is the most widespread and biologically active, therefore the vitamin Е is named also alpha-tocopherol or tocopherol. The highest content of tocopherols among the investigated standards is educed in corn oil; soybean oil is a little inferior to her. The least content of tocopherols was fixed in olive oil. In sunflower-seed oil the general concentration of tocopherols does not exceed 95 mgs%, that on 90 % is presented α- tocopherols. In soy-bean, rape and mustard oils in prevailing concentrations contained β -isomer. γ- and δ- isomers at the investigated standards presented in a negligible quantity from 2,4% in mustard press oil to 12,1% in aquated soy-bean. The results can be applied for prognostication of warranty expiration of sunflower date, soy-bean, flax, rape, mustard, corn and olive oils.