Abstract

In order to know the appropriate medicinal plants compound we estimate oils those are complex mixtures of numerous components. The valuation of an essential oil basing only on the percentage of the main physicochemical component constants. Analyses in Semnan province revealed the presence of sesquiterpene lactones, which a group of compounds previously known for their significant bioactivity. Semnan University laboratories have succeeded in isolating and identifying 11 new constituents from a class of compounds called the steroid glucosides. High concentrations of quercetin, quercetin 4^I-glucoside, taxifolin, taxifolin 7-glucoside and phenylalanine were also isolated from the red bulbs of Allium cepa L. var. Tropea. This new discipline has grown out of the scientific endeavor to understand more about the ways in which animals may be treating themselves with the use of plants. Due to the constraints and difficulties of systematic research of this kind on wild animal populations, our knowledge is still limited. Our results suggest that organ for synthesis site of glucosides is leaves not roots of the whole plants. We have established that traditional medicinal plants from Iran contain some medicinal chemical compound by its root, leaves, flowers and shoot cultures.

Key words: Qualitative analysis, medicinal compounds, oil plant, glucosides.