Study on Preparation Condition for the Chitosan from Flies Maggots
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Abstract:
To optimize the preparation condition for the chitosan from Flies maggots, chitin from Flies maggots shell was used as raw material, and alkali liquor method was used to prepare chitosan. Effects of sodium hydroxide concentration, ratio of liquid to material and reaction time on the deacelation degree of chitosan were investigated respectively by single-factor tests, and then the process conditions of the deacelation was optimized through response surface methodology with three factors and three levels based on the principle of Box-Benhnken design. The results showed that the optimum conditions of the deacelation reaction were as follows: ratio of liquid to material 57.49:1, sodium hydroxide concentration 50%, and reaction time 7.3 h. Under these conditions, the theoretical value of the chitosan deacelation degree was 83.18%, and 79.45%, respectively. The chitosan product was a white powder.
