Quality Assessment of Rhaponticum Carthamoides (willd.) Iljin as Medicinal Raw Material by the Bromic Antioxidant Capacity Estimation

The possibility of an express assessment of quality medicinal raw materials Rhaponticum carthamoides (Willd.) Iljin is investigated, at various stages of harvesting and storage by method Bromic Antioxidant Capacity Estimation (BACE), after extraction of sample in an aqueous solution. Revealed that phytoecdysteroids R. carthamoides extracted in aqueous solution at level of ethanol, have the temperature resistance. Among the investigated 17 species of industrial medicinal plants value R. carthamoides has the greatest value BACE, exceeding values of other species from 2-3 up to 5-12 times. Change BACE of leaf organs during the growing season was correlated with the dynamics of the concentration ecdysteroid 20-hydroxyecdysone, as defined by method of the reversed-phase highly effective liquid chromatography (RP-HPLC). Higher values for both indicators were also true for the early phases of vegetation. Established a connection between the loss of active substances and reduction value BACE during storage. On the safety of 20-hydroxyecdysone and the value BACE strongly influenced by the presence of impurities in raw materials, infected microflora. Medicinal raw materials from the leaf parts of over 10 years to keep their consumer quality and satisfy to normative requirements on the content of ecdysteroids. The crushed underground plant parts (rhizomes with roots) within 1 year of storage lost their original properties.