Abstract
Abstract. Relevance: Squat cloudberry (Rubus chamaemorus) has a sufficiently wide range of therapeutic effects for various diseases. At the same time, it does not refer to pharmacopoeia medicinal plants, but is used as folk medicine. Tannins (plant tannins) detected in Rubus chamaemorus hold a special place among the other biologically active substances of this plant. They have anti-inflammatory, antimicrobial, antioxidant and anti-cancer activity. Also, their properties are applicable in the prevention of cardiovascular and metabolic diseases. The aim of the study is to establish the presence of tannins and their quantitative determination in the leafs of Cloudberry squat, growing in the Vologda region for the possible determination of the raw materials of this plant as medicinal. Materials and methods: the presence and quantitative content of tannins in the raw materials of the squat cloudberry (leaves) growing on the territory of the Vologda region was determined using various methods of chemical analysis. Results of the study: qualitative samples confirmed the presence of tannins in the leaves of the studied plant (gelatin sample), as well as the sufficient presence of their hydrolyzable forms (iron-ammonium alum sample); quantitative (by permanganatometry) determined the content of tannins relative to the total dry weight of raw materials, it was 15.03 ± 1.14% (95% confidence interval = 14.12-15.95). The results obtained are consistent with the data of other researchers, the average relative proportion of tannins in relation to the total mass of the dry plant correlates to the average scientific results. The conclusion is made about the possibility of attributing Rubus chamaemorus, which grows in the Vologda region, to medicinal plants potentially recommended for use in the pharmaceutical industry.
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