用丝状真菌制备壳聚糖的研究

Research on Producing Chitosan by Fungus

对采用生物发酵法以雅致放射毛霉为原料制备壳聚糖进行了研究。结果发现在反应温度2 8℃、摇床转速 2 5 0r/min、pH =7 4～ 7 6、培养时间 45h的条件下壳聚糖对其菌丝体产率为1 5 6 8% ,产品结构经IR和XRD确认 ,脱乙酰度可达 85 %～ 90 %。

Chitosan was prepared by way of bio fermentation.The optimum reaction conditions were as follows:reaction temperature 28 ℃,rotation speed of fermentation reaction table 250 r/min and pH of fermentation solution 7 4-7 6.Under these conditions the chitosan fermentation yield was 15 68%.The product structure was identified by IR and XRD,and its deacetylating rate could reach 85%-90%.