Potential Bioactive Compound Seaweed Halimeda micronesica and Halimeda macroloba as Antioxidant and Phytochemical Screening of Active Seaweed Extracts from Maspari Island

Abstract

H. micronesica and H. macroloba species are a group of green seaweed (Chlorophyta) found in Maspari Island waters, which have been proven to show some biochemical activities. Therefore, this study aims to analyze the antioxidant activity, phytochemical compounds and total phenolic content of their extracts. The procedures used herein includes sampling and handling, maceration of both samples using ethyl acetate (Hmi-EA and HmaEA) and methanol (Hmi-M and Hma-M) solvents, extraction, antioxidant test using DPPH method, phytochemical test and IC50 analysis. The results indicate that Hmi-EA, which is one of the 4 extracts tested has the ability to inhibit free radicals. Furthermore it has an IC value of 52.81 ppm, and contains alkaloid, steroid and flavonoid compounds. In conclusion, this extract has the potential to express antioxidant activities.