Authors : H. Haryoto and Novan Visia Farmasari
Abstract: Mangroves are plants that live a lot on the coast of Indonesia. Mangroves have many benefits in traditional medicine such as medicine for wounds, coughs and others but there is not information about the source of antioxidants. Therefore researchers will test mangroves as antioxidants. There are various types of mangrove plants such as Rhizophora mucronata and Rhizophora apiculata. Rhizophora mucronata and Rhizophora apiculata contain flavonoid compounds, phenols and tannins. This research process was carried out antioxidant of Rhizophora mucronata and Rhizophora apiculata mangrove plants. Antioxidant test used a UV-Vis spectrophotometer the method of inhibiting free radical DPPH. This research used positive control of vitamin E which has antioxidant activity with IC50 1.56 μg/mL. The results of the study of the effectiveness of antioxidants using ethanol solvents. IC50 values of 225.24±1.68 and 135.46±1.75 μg/mL, respectively. IC50 value of ethanol extract Rhizophora mucronata and Rhizophora apiculata was higher than the positive control of vitamin E, so that, Rhizophora mucronata and Rhizophora apiculata ethanol extract was not potential as an antioxidant. From these results can be identified compounds found in the Rhizophora mucronata and Rhizophora apiculata mangrove plants are flavonoid compounds, phenols and tannins.
H. Haryoto and Novan Visia Farmasari, 2019. Antioxidant Activity of Extract Ethanol from the Leaves Rhizophora mucronata and Rhizophora apiculata. Journal of Engineering and Applied Sciences, 14: 6119-6121.