Roya Karamian,
Volume 15, Issue 2 (2-2015)
Abstract
Saponins are secondary metabolites that are found in many plants and some animals. These compounds are high molecular weight glycosides, consisting of a sugar moiety linked to a triterpene or steroid aglycone. Many saponins have detergency properties and give stable foam in water. The genus Silene L. with more than 700 species is one of the largest genera of the family Caryophyllaceae mainly distributed in north hemisphere. Saponins are one of important secondary metabolites in members of the genus. Quantitative and qualitative study of the saponins in the aerial parts and roots of three Silene species, namely S. ginodioca, S. spergulifolia and S. swertiifolia were carried out by spectrophotometry and TLC methods. In this study, 5 fractions were obtained from each plant part and in both parts of three species, fraction 1 contain the highest amounts of saponins. On the other hands, root extracts have a high amount of saponins. In addition, thin layer chromatography (TLC) of the extracts evaluated some saponins spots with different Rf.
Volume 18, Issue 57 (1-2004)
Abstract
Many different plant species synthesize triterpenoid saponins as part of their normal programme of growth and development. Examples include plants that are exploited as sources of drugs. Interest in these molecules stems from their medicinal properties, antimicrobial activity, and their likely role as determinants of plant disease resistance. Daisy (Bellis perennis L.) accumulates triterpenoid saponins in roots in response to salicylic acid (SA) and pathogens. The results of the research indicates that the amount of saponins in treated plants with SA was more than in the control plants. The amounts of saponins in infected plants and without SA was more than in the control plants. When infected plants were treated with SA, increases of saponins was shown in plants. The peaks observed in HPLC and their comparision with saponin standard confirm the results mentioned above. It is concluded that SA has significantly reduced diseases severity and increase the amount of saponins in infected and non-infected Daisy plants.
