Antioxidant and antiangiogenic properties,and Gas Chromatographic-Time of Flight analysis of Sonchus arvensis leaves extracts

Sonchus arvensis l. (asteraceae) is one of the medicinal herbs used in traditional medicines,in which the leaf extract was used as a diuretic,lithotriptic and antiurolithiasis agent. the leaves of s. arvensis reported contain several compounds,including a variety of flavonoids,terpenoids and sterol,even this plant also contain silica and potassium. flavonoids are secondary metabolite compound which have ability as antioxidant. in this study,the aims are to determine of antioxidants and antiangiogenic properties,and phytoconstituents quantitative of aqueous and methanol extracts of s. arvensis leaves. the antioxidant properties were studied using 1,1-diphenyl- 2-picrylhydrazyl (dpph) free radical,xanthine oxidase and β-carotene-linoleate models system. furthermore,the antiangiogenic property was evaluated using ex vivo rat aorta ring assay. quantitative determination of extracts phytoconstituents were carried out by using gas chromatographic-time of flight (gc-tof) mass spectrophotometric methods. the results showed that the aqueous and methanol extracts have ability as antioxidant which is antioxidant activities of aqueous extracts on dpph radical and inhibition of xanthine oxidase activity are higher than that of methanol extracts. meanwhile antioxidant activity using β-carotene-linoleate model system of s. arvensis aqueous extract is lower than that of methanol extracts. nevertheless,the differences of these antioxidant activities are not significant. antiangiogenic property of aqueous extract is also higher than that of methanol extract which is measured at 100 μg ml-1 of extracts. this indicates that there is correlation between antioxidant activity and antiangigenic property,exhibiting that this plant possesses the potential to prevent or cure the diseases that related to angiogenesis such as cancer.