FLAVONOIDS OF POLYGONUM HETEROPHYLLUM LINDM.
Abstract
Species of the genus knotweed rich various biologically active substances - flavonoids, catechins, antrohoniny, stilbenes and others. Species of the genus knotweed characterized by high content of flavonoid compounds that have antioxidant, antimicrobial, antiviral, anti-allergic, anti-carcinogenic, anti-inflammatory properties. The quantitative content and quality of the aerial part of flavonoids of Polygonum heterophyllum was studied. By the method of two-dimensional paper chromatography revealed that the extract of the aerial parts of the plant contains 11 compounds of polyphenol nature, 7 substances give a characteristic reaction to flavonoids. By preparative paper chromatography allocated two substances, by column chromatography on polyamide 3 substances in individual condition, 2 of them are aglycones, 3 of them are glycosides. On the basis of chromatographic data, spectral analyzes aglycones identified as quercetin and luteolin. According to the results of chromatography, spectral analyzes and acid hydrolyses glycosides identified as luteolin-7-glucoside, quercetin-3-glucoside, quercetin-3-galactoside and quercetin-3-arabinoside. It was found that depending on the habitat of plant flavonoid content varies between 1,44-2,12% on air-dry weight of raw materials.
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