Bioactive Compounds and Antioxidant Activity of Lindur Stem Bark (Bruguiera gymnorrhiza)

Abstract

Mangrove has a lot of benefits that intersect directly with human life ranging from ecology to benefit as a source of food, shelter and medicine. One of them is often found in Indonesia is lindur (Bruguiera gymnorrhiza). This study aimed to identify the content of bioactive compounds and antioxidant activities of lindur stem bark extract in various solvents. Antioxidant assay used Free Radical Scavenging Assay was estimated using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and total penolic content in the extracts was calculated as gallic acid equivalent (GAE). The results showed that phytochemical screening that n-hexane extract showed positive results on the parameters of steroids, the ethyl acetate extract on the parameters of steroids, flavonoids, tannins, saponins and phenols hydroquinone, methanolic extract on the parameters of steroids and flavonoids. Based on the antioxidant activity assays and total phenolic content, ethyl acetate extract showed the highest values of IC50 and phenolic content (37.23 ppm and 73.24 mgGAE/g). The results indicate mangrove species potential for the utilization as significant source of natural antioxidant.