EFFECTOFCHITINMASS/NaOHRATIOAND REACTION TIMEON CHARACTERISTICS OFCHITOSAN SYNTHESIZEDFROMWASTEOFDRIED SHRIMPINDUSTRY. Chitosan is a polymer can be prepared from chitin using deacetylation process. The purpose of this research is to study the effect of ratio of chitin mass to NaOH volume and reaction time on characteristic of chitosan synthesized fromwaste of dried shrimp industry. Firstly, chitin was isolated from shrimp shell waste with deproteination and demineralization methods. Subsequenly, chitin was transformed into chitosan by deacetylation process at 120°C, stirring rate of 150 rpm, ratio chitin mass to NaOH volume of 1:15, 1:20, 1:25 (w/v) and reaction time of 0.5 to 3 hours. This research result indicate that when ratio of chitin mass to NaOH volume increase, the degree of deacetylation of chitosan increased also but the amounts of ash and yield of chitosan decrease, whereas water content not appear significant effect. Degree of deacetylation of chitosan is 85,7% with ratio chitin mass to NaOH volume 1:15 during 3 hours, then it increase to 86,1% after ratio chitin mass to NaOH volume increased ratio to 1:25.Yield of chitosan is in the range 86.6%to 63.5%, water content is 1.2%to 1.0%,and amount of ash is 1.9% to 1.1%.
展开▼
