Phytochemical analysis,antimicrobial,antioxidant activities and total phenols of Ferulago carduchorum in two vegetative stages (flower and fruit)

Ferulago carduchorum (apiaceae family) is an endemic plant of iran. the crude extract and four fractions of aerial parts of f. carduchorum in two vegetative stages (flower and fruit) were studied for their total phenolic contents,antimicrobial and antioxidant activities using folin-ciocalteu assay,micro dilution method and dpph assay,respectively. the results indicated that the best antioxidant activity was determined in flower crude extract (ic50=0.44mg/ml). the flower ethyl acetate fraction (fle) showed better antimicrobial and antifungal activities than other fractions. so,fle was selected for phytochemical investigations,resulting in isolation of a flavonoid (hesperetin). hesperetin showed antimicrobial activity. the results showed that the antimicrobial and antioxidant effects during the flowering are obviously more than the fruit season.