In this study, biological activity of flavonoids from plants (Artemisia herba, Ruta chalpensis L. and Peganum harmala L.) Result showed the important of flavonoid from Plants in antioxidant activity. The efficiency test of flavonoids in antioxidant activity from quantification of total flavonoids content and determination of DPPH radio scavenging activity. The result showed that all extracts from plants tested at
These findings demonstrate the remarkable potential of flavonoids from these plant as valuable sourse of antioxidant.