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Green Mussels (Perna viridis L) is consumed by a lot of people, but the waste of green mussels shells is still not used optimally. This study aims to determine the antioxidant activity of waste of green mussels shell using DPPH method. Chitosan obtained through deproteination, demineralization and deacetylization process. Antioxidant activity is determined by DPPH method. The yield of chitosan produced in this study was 59.3% with the degree of deacetylation of 49%. Antioxidant activity of chitosan as indicated by the IC50 has a value of 170.03 ppm which is classified as a weak category. Therefore, chitosan needs to be modified in order to increase its antioxidant activity.

Antioxidant Activity of Chitosan from the Waste of Green Mussels Shell (Perna Viridis L)