| Popis: |
The composition of Rhodiola rosea L. lipophylic substances was studied. Acidic and neutral components were identified by gas-chromatography-mass-spectrometry. With methyl-tert-butyl ether as an extractant instead of the volatile solvent diethyl ether, lipophylic extract was obtained. Methyl-tert-butyl ether used as an extraction solvent for raw materials has all the advantages of diethyl ether, being free of its disadvantages. It does not form peroxides or produce elevated partial gas pressure due to its higher boiling point. As a result, comparison with databases identified some triterpene and aliphatic acids with chain lengths 12 to 30 carbon atoms, including saturated, unsaturated, and dibasic acids. In addition to the components known from the literature, more than 50 triterpene and aliphatic compounds were detected in the unsaponifiable residue for the first time. |
