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Chitosan coating serve as an antioxidant and micro-diffusion barrier and prevents the loss of water, texture, odour, color or overall accessibility in seafood. The preservation of shrimps using chitosan dips seems promising and effective, as demonstrated in this study. The antimicrobial property of chitosan is infhenod by slightly acidic pH. This work also showed that the shelf life of Penaeus monodon coated with chitosan dips extends the shelf life of shrimp.