Qualitative and quantitative compositions of biologically active substances of water-ethanolic extracts of Origanum vulgare L. specimens № 3, 17-7, 61 introduced in Nikita Botanical Gardens — National Scientific Centre have been defined. It was found that the characteristic components for test extracts are p-cymene, γ-terpinene, cis-sabinene hydrate, α-terpinene-4-ol, β-caryophyllene, caryophyllene oxide. It was discovered that the main volatile components of the specimen № 3 extract are caryophyllene oxide, 4-ethoxi methyl phenol, trans-ocymene, sabinene; of the specimen № 17-7 extract are caryophyllene oxide, p-cymene, sabinene; of the specimen № 61 extract are carvacrol, γ-terpinene, thymol. Among the non-volatile phenolic compounds in the extracts, caffeic acid and rosemarinic acid, luteolin and luteolin-7-glycoside have been identified. Due to qualitative diversity and quantitative content of the biologically active substances, the specimen № 61 extract has been distinguished.

Keywords: Origanum vulgare, Lamiaceae, polymorphism, biological active substances, water-ethanol extracts, terpene

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