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Kromasil C18 column (4,6 × 250 mm, 5 micron). Detection was carried out using a UV detector "GILSTON" UV/VIS model 151, at a wavelength of 254 nm. In comparison with standard samples we identified 8 flavonoids (prevailing -izoquercetin, hyperoside, izoramnetin-3-glucoside), 5 aromatic acids (predominantly acid -cinnamic, gallic, chicory acids -coffee, chlorogenic, gallic, chicory, cinnamon; flavonoids -vitsenin, lyuteolin-7-glucoside, isoramnetin-3-glucoside, apigenin; epicatechin, catechin, epigallocatechingallate; coumarinwas established in B. scorzonerifolium.

НАКОПЛЕНИЕ ФЕНОЛЬНЫХ СОЕДИНЕНИЙ В НАДЗЕМНЫХ ОРГАНАХ ВОЛОДУШКИ КОЗЕЛЕЦЕЛИСТНОЙ (BUPLEURUM SCORZONERIFOLIUMWILLD A plant of the genus Bupleurum L. is being introduced into medical practice and being used in traditional medicine as an anti-inflammatory agent in diseases of the gastrointestinal tract, treatment of diseases of the liver and gall bladder. In folk medicine, infusion from the herb Bupleurum scorzonerifolium Willd. is used externally for inflammatory diseases of the eyes and skin diseases. B. scorzonerifolium is widespread and abundantly grows in the area of Ural Mountains, Altai, Tuva, in the Krasnoyarsk region, Baikal region, and Buryatia. Detection of phenolic compounds in B. scorzonerifolium was performed using qualitative analytical reactions. Studying the composition of flavonoids and phenol carbonic acidswas carried out by paper chromatography. We established that the leaves of B. scorzonerifolium contain quercetin, kaempferol, rutin, hyperoside and isorhamnetin, stems -quercetin, kaempferol, rutin and isorhamnetin, flowers -quercetin, hyperoside

In folk medicine in the Baikal region, an infusion from the aerial part of the plant Bupleurum scorzonerifolium (Willd) is widely used as a choleretic and anti-inflammatory agent. The choleretic effect of herbal remedies is mainly due to the content of phenylpropanoids and flavonoids. Using high performance liquid chromatography with a diode-matrix detector and 3Q electrospray ionization detector, we studied the metabolic profile of the phenylpropanoids and flavonoids of the aboveground organs of B. scorzonerifolium (Willd.), which grows in the Baikal region. In the aboveground organs of B. scorzonerifolium, 7 phenylpropanoids and 17 flavonoids were identified, of which 15 compounds for the species were identified for the first time. Quantitative determination of individual components was carried out in the aboveground organs of B. scorzonerifolium and dry extract by microcolumn HPLC with UV detection. The predominant components in the aerial part of the plant are 5-O-caffeic quinic acid, 3,5-di-O-caffeic quinic acid, isoquercitrin, isorhamnetin-3-O-glucoside, kaempferol-3-O-rhamnoside and rutin. The dry extract obtained from the aerial part of B. scorzonerifolium contains the entire complex of phenylpropanoids and flavonoids, which are identified in the plant. The content of active ingredients in the extract is 2.5–3.0 times higher than in the aboveground organs. The aboveground organs and dry extract of B. scorzonerifolium can be used as a source of phenylpropanoids and flavonoids.