Postia puberula تأثیر نوع حلال بر قدرت آنتی اکسیدانی، میزان فنل و فلاونوئید گیاه.

This study was carried out to evaluation of solvent type on antioxidant potential and phenol and flavonoid contents of Postia puberula belonging to the Astraceae family. Ethanolic, methanolic, aqueous and hydroalcoholic extracts were prepared for evaluation of the antioxidant activities and phenol and flavonoids contents. The antioxidant effects were tested by two methods, 2 and 2 diphenyl 1- picryl hydrazyl (DPPH) and beta-carotene-linoleic acid. Gallic acid and quercetin were used as controls for phenolic and flavonoid compounds, respectively. The results showed that the solvent type could be effective on antioxidant activity, phenol and flavonoid content, so that the hydroalcoholic extract had the highest antioxidant activity in both methods, also, the highest phenol and flavonoid contents were observed in the hydroalcoholic and ethanolic extracts, respectively. [ABSTRACT FROM AUTHOR]