Studying the Altai plants vegetative parts extracts potential for use in the food industry

The purpose of the study is to determine the content of extractive water-soluble substances, phenolic compounds and heavy metals in aqueous extracts of samples of vegetative parts of Altai plants. Stems, leaves, buds of blackberries, raspberries, currants, hawthorn berries, chamomile flowers were used for analysis, and green and black teas were used to compare characteristics. Despite the difficulty of extracting from stems and buds, the concentration of polyphenolic compounds is high, comparable to green tea. As a result, it was determined that in the vegetative parts of plants, the percentage of extractive substances reaches 52.34 %. While the content of extractives in infusions prepared from dried flowers and berries (for example, chamomile, hawthorn) ranged from 18.48 to 29.88 %. The quantitative content of phenolic compounds (according to Folina-Ciocalto) in Altai plant samples was determined. Blackberry leaves contain 5.44 % more polyphenolic compounds than black tea (10.78 %) and less than green tea (16.24 %). Raspberry leaves (12.32 %) and black tea (10.78 %) do not have significant differences in the total content of polyphenols, therefore they can be used additionally or as an interchangeable product for enrichment with secondary dietary substances. The leaves of blackberries and raspberries have a similar composition due to belonging to the same plant family. Plants were also analyzed for the content of heavy metals. This analysis showed the safety of raw materials for use in the food industry and the absence of toxic elements.