Antioxidant activity of goat›s milk with variants of multiple regression model

Abstract

Relevance. Goat’s milk has great potential for creating functional food products, including those with high antioxidant activity, which increases their therapeutic and preventive significance. A mathematical model has been proposed to evaluate the antioxidant activity of goat’s milk.Methods. The biochemical parameters of goat’s milk were analyzed using the MilkoScan 7 / Fossomatic 7 DC system (Denmark). The analysis of the total amount of water-soluble antioxidants was performed on the device “Tsvetyauza 01-AA”. Statistical processing of the results was carried out in the Microsoft Excel program using the Data Analysis package, in the R program (“Psych” package). The reliability of the differences was assessed using the Mann — Whitney U-test. Milk samples were obtained from Alpine goats in the summer of 2022 and 2023.Results. The antioxidant activity of goat›s milk was established at the level of 21.99 ± 1.48 mg/g (2022) and 22.30 ± 1.91 mg/g (2023). The best obtained regression equation model is characterized by a high multiple correlation coefficient (0.947) and is significant by the F-criterion (0.01). In the proposed model, for a preliminary assessment of the antioxidant activity of goat›s milk, it is necessary to use only one parameter of biochemical analysis — caseins. This model allows for a preliminary assessment of the antioxidant activity of goat milk. There are no significant differences between the data obtained in the experiment and the data obtained using the regression equation according to the t-criterion.