Study on Carboxymethyl-chitin Production and its Application in Food Industry
Keywords:
CM-chitin, carboxymethyl-chitin, water soluble derivative of chitinAbstract
On the procuction of carboxymethyl-chitin (CM-chitin), alkali chitin was prepared by mercerized chitin in 50, 55, 60 and 65% (W/V) NaOH solution. After keeping over night at 0 and -20°C, the resulted frozen alkali-chitin was alkylated with the addition of monochloroacetic acid in 2-propanol. CM-chitin obtained from the various conditions showed different properties. The degree of carboxymethyl group substitution at C6 studied by IR and 13C NMR ranged from 0.38 to 0.7 depending on the concentration of sodium hydroxide. CM-chitin could be effectively used as an emulsifier, thichener, stabilizer in salad dredding and bodying agent in sweetened soft drinks.
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