PENINGKATAN DERAJAT DEASETILASI DALAM SINTESIS KITOSAN DARI CANGKANG KERANG DARAH

Blood clam shells produced from the consumption of blood clams contribute to the emergence of blood clam shell waste. Waste that accumulates without processing causes pollution to the environment. Blood clam shells can be processed into chitosan. The excellent quality of chitosan can be seen from the degree of deacetylation. This study seeks to determine the relationship between the concentration of NaOH solution and reaction time to increase the value of the degree of deacetylation to establish the optimal concentration of NaOH solution and time of response. The next goal is to get high-quality chitosan products based on SNI requirements. The deacetylation stage employs a 30% concentration of NaOH solution, 35%, 40%, 45%, and 50%, and stirring times of 0.5; 1; 1.5; 2; 2.5 hours variables. The outcomes demonstrated that the degree of deacetylation was raised during the synthesis of blood clam shells into chitosan with the addition of NaOH concentration and reaction time. By the 2018 SNI chitosan standard, the best findings in this investigation had a yield value of 30.5% and a degree of deacetylation from the FTIR analysis of 86.0365%. These results were obtained at a NaOH concentration of 50% with a reaction time of 2.5 hours.