Milk is a good source of protein, calcium, vitamins, magnesium, casein. Its advantages are the pleasant taste, dietary features and the ability to quench thirst. However, in hygienic terms, it is not without drawbacks. In particular, milk is a beneficial environment for the development of various microorganisms, including pathogens, as a result of which it can easily become a carrier of infectious diseases. Therefore, the task was set to investigate the risks associated with the transmission of a number of dangerous zoonotic infectious diseases, in particular brucellosis and tuberculosis. To this end, organoleptic and laboratory studies were carried out on 20 samples of unpasteurized milk purchased from private individuals in different administrative districts of the city of Yerevan. Through organoleptic method the color, smell, taste, texture of milk was determined. Under laboratory conditions, pH, purity, density, total acidity, bacterial contamination of milk and the presence of brucellosis antibodies and causative agents of tuberculosis were detected. Milk samples were also examined for starch and soda content (milk adulteration).

The aim of the work is to study the growing dynamics of total sugars, acids and phenolic compounds (flavonoids, anthocyanins) in Sev Areni grape berries in conditions of organic farming depending on the buds’ load rate. The studies were conducted in 2020-2021. The vineyard belonging to “Hin Areni” CJSC, established in 2007-2008, is located in the Areni community of Vayots Dzor marz, at an altitude of 1200 m above sea level. At the start of the trials, 5 hectares of the garden (10 ha) were cultivated with organic methods. The experiments were carried out in four replications through the method of Lazarevskiy including 15 vines in each option. The dynamics of berry ripening was studied according to vine load. Sugar content (refractometric method), titratable acidity (using OIV-MA-AS313-01 method), pH, total phenolic content of fruit juice was determined three times. According to study results, the amount of flavonoids and anthocyanins changes during grape ripening, depending on the vine load. Along with the grapes maturation, sugar content of the fruit juice increases, the acidity decreases. However, parallel to the increase in vine load, the sugar content decreases. In the option of 50 bud load the sugar content decreases. The harvested yield lags behind the option of 30-40 bud load in its qualitative properties. Thus, it is not recommended to use high bud loading option in the organic farming. Based on the study results, it is recommended to use 30-40 bud vine loads of Sev Areni variety in conditions of vineyards organic farming.