Synthesis of chitosan from Stary Tigger Fish Skin (Abalistes stellaris)

Abstract

Synthesis of chitosan from stary tigger fish skin was carried out in three stages: deproteination using 10% NaOH solution, demineralization using 0.63 M HCl solution, and deacetylation using NaOH solution with variations in 60%, 50%, and 40% NaOH concentrations. Characterization results show that chitosan is best obtained from deacetylation process with 60% NaOH. The degree of deacetylation obtained 74% has met the DD standard of at least 70% chitosan. Ash level 88.05%; 6% water content; 2.29% protein content.