Liosina paradoxa sponge is one of the Indonesian marine biota that contains compounds that have strong bioactivity. This study was conducted with the intention to determine the antioxidant activity contained in Liosina paradoxa sponge. This research is a laboratory experimental research where this test uses DPPH method. The results showed that Liosina paradoxa sponge has antioxidant activity with the highest concentration having a percentage reaching 75%.
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