Mangrove Sonneratia caseolaris is one type of mangrove that has antioxidant potential that is used by coastal communities as a wound medicine. The purpose of this study was to analyze and calculate how much antioxidant content in the mangrove leaves of S. caseolaris in tanjung api-api area, Banyuasin regency, South Sumatra. The study was conducted in April 2021. The extraction method uses three…