VITAMIN C CONTENT ANALYSIS IN LOCAL FOOD PRODUCTS OF YAKUTIA

he purpose of the study is to analyze the content of vitamin C in the most consumed food products and wild berries by the population of Yakutia. The object of research is products of animal and plant origin, wild berries. The research material was collected in 2016–2019 in Central Yakutia. Selection and preparation of samples were carried out according to the method of A.F. Abramova (2007). The content of vitamin C in food products was determined by infrared spectroscopy on a SpectraStar 2200 analyzer, calibrated on the basis of standard chemical methods, in the laboratory of agricultural products processing and biochemical analyzes of the Yaroslavl Research Institute of Agriculture. The norms for vitamin C requirements per day vary by population group, in accordance with the norms of physiological needs: for children – from 30 to 90 mg/day, for adults – 100 mg/day. Among animal foods, the richest in vitamin C are mare's milk (11.4 mg/100 g), fermented milk product "Ot Uerete" (1.6 mg/100 g), and among plant products – green crops (parsley (150.0 mg/ 100 g), dill (100.0 mg/100 g), onion (95.0 mg/100 g), among wild berries, the highest content of vitamin C was noted in rose hips (3100.0 mg/100 g) and black currants (386.0 mg/100 g). When consuming 250 g of mare's milk, the degree of satisfaction in vitamin C can be 28.5 % according to MP 2.3.1.0253-21. A serving (100 g) of cabbage and potatoes satisfies the daily requirement of an adult for vitamin C by 45 and 10 %.