| Autor: |
Skuibida, Valeriia, Onopriichuk, Olena, Tymchuk, Alla, Soloviov, Nikita, Grek, Olena |
| Předmět: |
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| Zdroj: |
Ukrainian Food Journal; 2022, Vol. 11 Issue 2, p247-258, 12p |
| Abstrakt: |
Introduction. Effective milk processing with optimal use of its components, search for new sources of protein, and partial replacement of proteins of animal origin with vegetable ones could be considered as the ways to solve the problem of protein deficiency. Materials and methods. The dairy-vegetable concentrate was obtained from the dairy-vegetable mixture by the thermal acid precipitation of proteins. The yield (mass) was determined by the weighing method. The mass fraction of moisture was determined by the thermogravimetric method. Determination of water activity of model samples of concentrates was carried out on a hygrometer. Results and discussion. The results of determining the yield of concentrates, their physico-chemical and sensory indicators confirmed the possibility of partial replacement of skimmed milk with whey-plant suspension with Arachis hypogaea fruit at the ratio of 7:3 in mixtures for thermal acid precipitation of proteins. Dairy-vegetable concentrates had a more developed spatial configuration compared to control. It is the "framework" of the samples obtained with the maximum content of vegetable coagulant that determines the greater rigidity of the structure, and therefore provides the best structural and mechanical characteristics and, accordingly, the moisture-retaining capacity. According to the indicator of water activity (Δw), which shows the influence of enzymatic, microbiological and other processes on the intensity of reactions, the predicted rational storage conditions for milk-plant concentrates are a temperature of 4±2 °C and a duration of 72 hours. It was determined that the evaporation of the main part of moisture from the protein-vegetable concentrate was slower by 3±0.5 min compared to the milk-protein concentrate, due to the presence of Arachis hypogaea proteins and carbohydrates that bind free water. Conclusions. The feasibility of using the fruits of Arachis hypogaea in mixtures for thermal acid precipitation of proteins to obtain milk-plant concentrates with appropriate functional properties and increased biological value due to a more balanced amino acid composition has been proven. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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