Статті
Постійне посилання колекціїhttps://dspace.nuft.edu.ua/handle/123456789/7522
Переглянути
4 результатів
Результати пошуку
Документ The influence of starch products on the rheological, physical and chemical properties of yogurt(2024) Polishchuk, Galyna; Sharahmatova, Tetiana; Marynin, Andriy; Ivashchenko, Olga; Sviatnenko, RomanExpanding the assortment of low-fat yogurt with natural structuring sweeteners and regulated quality indicators is an actual direction of scientific research. The purpose of the study is to study the patterns of influence of the products of enzymatic hydrolysis of corn starch with different dextrose equivalents on the rheological, physical and chemical characteristics of yogurt. Тhe functional and technological properties of starch products of different chemical composition were studied – maltodextrin MD-10, glucose syrup IG-42 and glucose-fructose syrup GFS-42. The possibility of completely replacing dry skimmed milk and sugar in the composition of yogurt with a fat content of 1% drinkable with an equivalent content of dry substances of maltodextrin MD-10 and glucose syrup IG-42, which ensure the formation of rheological characteristics inherent high-quality yogurt. Yogurt with sucrose, which inhibits the organization of macromolecular chains of milk proteins, has the lowest thixotropic ability, and yogurt with maltodextrin MD-10 and glucose syrup IG-42 has the highest. The predominance of higher sugars in the composition of MD-10 maltodextrin lengthens, and the increased content of monosaccharides in GFS-42 accelerates the duration of fermentation of milk mixtures in the technological process of production of yogurt with a fat content of 1.0%.Документ Physico-chemical and rheological indicators of meat pates with corn starch suspensions prepared with electrochemically activated water(2023) Marynin, Andriy; Shpak, Vladyslav; Pasichnyi, Vladyslav; Sviatnenko, Roman; Shubina, YevgeniaThe aim of the study was to determine the influence of electrochemically activated water application on the rheological properties of corn starch suspensions and pates prepared with them. Corn starch suspensions were prepared on artesian water, which was activated by electrochemical treatment on a diaphragm electrolyzer. Physico-chemical characteristics of electrochemically activated water were determined using a Palintest 7500 photometer. Morphological studies of starch granules were carried out by scanning electron microscopy, and granulometric composition was determined by laser diffraction method. The rheological indicatorss of starch suspensions and pates were studied using a Kinexus Pro+ rheometer. The physico-chemical characteristics of electrochemically activated water except pH met the requirements of the European Parliament and Council Directive on the quality of water intended for human consumption. The water absorption capacity of starch when preparing its suspensions on a catholyte (obtained by passing a direct electric current through water in the cathode chamber of an electrolyzer) decreased by 26%, and when prepared on an anolyte (obtained in the process of water oxidation reactions on the anode) increased by 18%. The moisture holding capacity of hydrated starch decreased by 10% when using catholyte, and increased by 36% when using anolyte. Electrochemically activated water had a significant effect on the rheological characteristics of starch suspensions: with an increase in the percentage of complex shear strain, the shear stress increased proportionally for samples of suspensions made on electrochemically activated water. The viscoelastic properties of starch suspensions prepared using electrochemically activated water both at 25 ℃ and at 68 ℃ tended towards an ideally elastic gel, that is, they had more elastic structure than the control samples. Under the action of shear deformation, the elastic properties were lost, while the suspensions acquired viscosity (phase angle values increased). The maximum value of the moisture binding capacity of pates was observed when using a starch suspension prepared on anolyte. The best values of rheological characteristics of pates were obtained when using starch suspension with 2% starch prepared on anolyte. Electrochemically activated water had a significant effect on the physicochemical and rheological properties of semi-finished products, in particular corn starch suspensions, and pates prepared with them, and contributed to better structuring of the studied food systems.Документ Influence of electrochemically activated water on the physical properties and rheological indicators of meat pates(2023) Marynin, Andriy; Pasichnyi, Vasyl; Shpak, Vladyslav; Sviatnenko, RomanThe object of research is the physical properties and rheological indicators of meat pates with corn starch suspen-sions prepared with activated water. Among the components of the composition of drinking water and food products, there are many substances with particularly inherent biological activity. The biological activity of water is caused by increased electronic or proton activity. Today, various ways of changing properties of water are known, but the most promising reagent-free method is the electrochemical activation of water. As a result of electrochemical treatment of water with an electric current, its electrochemical characteristics change. As a result, electrochemically activated aqueous solutions (catholyte/anolyte) are obtained; the water is saturated with oxygen, accelerates the removal of metabolic waste and promotes the most complete assimilation of nutrients.The research was aimed at determining the influence of activated water in the composition of starch suspen-sions on the physical properties and rheological indicators of meat pates with their content. Activated water affects the pH value of pates, which in the meat industry indicates the freshness and quality of meat raw materials and products made from them. Before pasteurization, the pH value for all samples was practically identical. That is, at the initial stage, activated water does not affect the acidity of pates. In the process of storage, the concentration of (H+) ions increases in pates, and the pH shifts to the acidic side. Water activity indicators of pates with starch suspensions on activated water gravitate towards the indicators of pates more than to the indicators of starch, the range for which is within 0.280–0.400. The dependence of the change in shear stress on the relaxation time of pates showed that regardless of the dosage of the starch suspension, the values of the shear stress of the samples on the catholyte in the time range 0–300 s are significantly higher than the values of the samples on the anolyte and tap water. This is explained by the ability of these samples, having acquired the necessary structure, to be less exposed to the external influence of deformation and to keep the structure more intact. The creep curves of all samples testify about the trimodal nature of the classical experimental creep curve. Thus, the electrochemical activation of water modifies the properties of corn starch and significantly affects the rheological indicators of meat pates containing it.The obtained results can be used in the development of recipes for meat pates and their production at enterprises.Документ The study of the abiloity of soy isolates of different trademarks to interact with water molecules(2021) Fursik, Oksana; Bandura (Kuzmyk), Uliana; Sviatnenko, Roman; Marynin, Andriy; Strashynskyi, Igor; Pasichnyi, VasylThe established ability of soy isolates to absorb and hold water molecules was mainly due to the predominant amount of globular proteins, which showed a high ability to hydrate, provide high solubility, viscosity of experimental systems and they were characterized by high functional and technological properties (FTP): water-binding, fat-absorbing and emulsifying abilities, were able to form gels, structured matrices, stabilize emulsions, and also have high solubility, salt and heat resistance. This is one of the indicators which helps to combine their physical characteristics with raw meat materials. Due to the complex of properties, soy isolates remain one of the best protein preparations for the production of meat products.