Prepat plant (Sonneratia alba) is one of the mangrove species that has potential as an antioxidants source that has been exploited by coastal communities in Indonesia. The purpose of this research is to determine and analyze the potential of antioxidant activities on the stem bark and leaves of Sonneratia alba mangrove in Carat Cape, Banyuasin Regency, South Sumatra. The extraction method uses …