Ecological and Hygienic Assessment of the Quality of Burdock Roots of Large Flora of Urbanized Territories of the Central Black Earth Region

The roots of the bladder are mainly used in the form of aqueous extracts, and the pharmacological effect is due to water-soluble compounds based on polysaccharides. The study of the peculiarities of accumulation of this group of compounds is relevant. The aim of this study the relationship between the accumulation of heavy metals and arsenic and biologically active substances in the roots of ordinary burdock, collected on the territory of the Voronezh region in biogeocenoses experiencing various anthropogenic effects. In the Voronezh region, 51 points of harvesting plant raw materials were selected. The study of the content of heavy metals and arsenic in the roots of the bladder, the sum of polysaccharides in terms of fructose and the sum of extractive substances extracted by water was conducted according to pharmacopeic methods. The total amount of gravimetrically precipitated water-soluble polysaccharides was determined by a previously developed and validated patented procedure. Correlation coefficients were analyzed to examine in detail the effects of heavy metals and arsenic on the accumulation of biologically active substances. Of the samples examined, some do not meet the requirements of the regulatory documentation for arsenic content. Significant physiological barriers have been identified to the accumulation of ecotoxicants in the roots of common burdock, which is especially noticeable for elements such as lead, mercury, arsenic, cadmium, cobalt and chromium. The raw material can selectively concentrate copper and zinc. In eight samples prepared under urbocenosis conditions, this indicator was below the minimum numerical value. Low correlation of the content of large sum of gravimetrically determined polysaccharides and extractive substances in samples of burdock roots was revealed. extracted with water, containing heavy metals and arsenic, wherein the numerical value of the sum of the polysaccharides in terms of fructose is largely dependent on the concentration of toxic elements in the plant; which is probably due to the formation of strong metal-monosaccharide complexes, which make it difficult to obtain colored complexes of monomer sugars with a complexing agent during spectrophotometric determination.