This paper offers investigation of fruit and berry fillers on the rheological properties of fermented milk drinks. The research was conducted as part of a scientific research effort. Local wild plants were used as fillers. This type of research allowed expanding the range of products at the enterprise and improving the organoleptic and nutritional properties of products. The purpose of this article is to find additional local vegetable raw materials as filler for fermented milk products. The importance of the results is that the data obtained can be used by specialists of dairy farms. During the period of coronavirus infection, when there were interruptions in the supply of raw materials, such directions it sets for future research as the development and improvement new food products by using local plant raw materials were revealed. The experimental samples of fermented milk drink from goat’s milk with various fillers (tayberry, shadberry, black chokeberry and blackcurrant). The pH of the samples were measured with a pH meter (Exspert-рН, Russia). Total solids, protein, fat, ash, and titratable acidity were determined according to the methods described by the standard method. Goat's milk is subjected to ozonization for 10 minutes at an ozone concentration of 80 mg/m3 before entering the container. The pasteurized goat milk (at 37 °C) was inoculated with freeze-dried culture bacterial starter culture (thermophilic lactic acid bacteria and bifidobacteria (Breve B 10, Bifidobacterium adolescentis B 14, Bifidobacterium adolescentis B 37) in the ratio 2:1 at 5 % inoculation level. The sensory aspects were undertaken using 10 panellists. The degree of influence of the introduced bacterial starter culture on the duration of fermentation of fermented milk beverages was studied by taking into account the rheological characteristics and structural and technological parameters. A mathematical model of the dependence of the strength and acidity of a fermented milk clot on the dose of fruit and berry fillers is constructed.
The primary aim of this paper is to explore the nutritional value of fermented milk drinks from a goat. A vegetable component was used as fillers, including amaranth flour, flour from kumarshik, fruit and berry filler: irga, black chokeberry, and black currant. This study’s specific objectives were to determine organoleptic and safety indicators and study the shelf life of finished fermented milk drinks from goat milk with various fillers. A detailed technological scheme for the production of fermented milk drinks was drawn up. In the study, the rational formulation of fermented milk drinks was determined using the “Search for solutions” program MS Excel.
Fermented milks, which are highly-consumed foods in the world and more nutritious compared to milk, have high contents of proteins, minerals and vitamins. In general, the overall properties of yogurt, such as acidity level, the production of aroma compounds as well as the sensory profile (appearance, color and texture), are important traits which have a decisive role in consumer acceptance of products. Goat milk yogurts were manufactured with the supplementation of 5% cherries, 5% blackthorn fruits, and 5% mixture of two. Yogurts were characterized based on compositional, microbiological and safety properties of the added fruit pulp and sensory analyses during storage (15 d at 5°C). Compared with control samples yogurt made by using fruits and berries had higher protein content and sensory properties, but also higher acidity values. Goat milk yogurts without additions, in particular, had better physical characteristics. Using supplements caused the changing structure of yogurt, leading to higher syneresis values. Yogurt with mixed of two fillers was the best accepted among the yogurts. For the parameters used, a mix of cherries and blackthorn has promising features as suitable ingredients for goat milk yogurt manufacture. The overall acceptability decreases when adding the non-roasted amaranth flour in a product. The main weakness of this study was the paucity of size of our panel (10 people). With a small sample size, caution must be applied, as the findings might not be transferable to show objective data.
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