PEMANFAATAN TEKNOLOGI SONIKASI TAK LANGSUNG DALAM RANGKA PRODUKSI KITOSAN

Thermochemically preparation of chitosanis as well as known. Chitosanis producedthroughthedeacetylationof chitinusingstrongalkaliat high concentrations, high temperatures,and a long time. Technological innovationhas requiredtoobtainchitosanproduction processmore efficient. In this paper indirect sonocationtechnology used to produce ofchitosan-based shrimp wasteusingultrasonicbath which offrequency 42kHz. A number ofchitin(2g) was added a solution ofNaOHwithconcentration between55-70% toa certain ratio.The mixture was irradiated in the ultrasonic bath at a set temperature (70oC) for a controlled period (10-30min). Chitosanwas neutralizedand driedthen analyzedof degree of deacetylation usingFourier Transform InfraredSpectroscopy(FTIR). The degree of deacetylation was interpreted by the SabnisandBlock baseline method. The results showedthat thebestcondition fordeacetylationwas achieved in70%of NaOH and reaction time30 min. Theparameters moisture content, ash content, viscosity, anddegree ofdeacetylation were found to be 9.94%, 0.34%, 3.2 cP, 85.02%, respectively. Chitosancompletely dissolvedin1%of aceticacidand suitablefor food application as edible film.