Gas Chromatographic Profiles Retention of Volatile Components in the Headspace of Medical Plants «Calendula Officinalis L.», «Hypericum Perforatum L.», «Tanacetum Vulgare L.»
Abstract
The investigation was concerned with three kinds of medicinal plant raw materials (MPRM), "pot marigold", "St. John's wort," "tansy" (productions of "Krasnogorskleksredstva"). Gas chromatographic investigation (GC/DIP) of volatile organic compounds (VOCs) extracted to the headspace (HS) from the airdry raw materials. Retention indices of VOC by linear programming of column temperature with polydimethylsiloxane stationary phase (IiT) and their relative area of peaks (Аотнi) were determined. The comparative evaluation of the composition of the headspace (GC/DIP) and essential oils of the investigated plants (GC / MS) was held, based on literature data of retention indices. It was established that the HS contains more volatile components of medicinal plant raw material than the essential oil. The obtained data is presented in the form of gas-chromatographic profiles (charts) found using values of retention indices of IiT and proportion of Аrel i of VOCs of medicinal plants. The specific differences of profiles of each of theinvestigated plants are noted. It was demonstrated that the gas chromatographic profile is specific for the presented plant and could be used in express evaluation of identification of medicinal plant raw material.
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