摘要
工程蝇壳经盐酸脱钙，稀碱脱脂脱蛋白和高温浓碱脱乙酰三步后可得几丁聚糖，收率１２％～２０％．几丁聚糖的脱乙酰度、粘度、色度及灰份取决于酸碱浓度、温度和作用时间等提纯工艺条件；１ｍｏｌ·Ｌ－１ＨＣｌ室温浸泡蝇壳１６ｈ，稀碱脱蛋白，在１００℃下，７６２．５ｇ·Ｌ－１ＮａＯＨ脱乙酰４ｈ，可得到脱乙酰度和粘度均较高，色白含灰份约３％的样品．间歇法脱乙酰是提高产品质量的重要途径．随着氨基的暴露，几丁聚糖具有化学反应活性而易于进行化学与电化学改性．
A preparative method has been established for obtaining chitosan products from the Industrial Musca domestical by using three procedures of decalcium and deproteide and deacetyl. The process te chnology and characteristic of chitosan products of quality with three indexes of degree of deacetylation, viscosity and color were approached. The results indicate that there is about 3% ash content of chitin extracted from the shells of the Industrial Musca domestical after being immersed in 1 mol·L -1 HCl for 16 hours. The procedure of deproteide by dilute alkali is an important factor to influent the color of products. The procedure of deacetylation with the solution containing 762.5 g·L -1 NaOH for 4 hours at 100℃ have been carried out for obtaining optimum chitosan products quality. For high degree of deacetylation and viscosity, intermittence treatment is an important route.
出处
《武汉大学学报（自然科学版）》
CSCD
1998年第2期193-197,共5页
Journal of Wuhan University(Natural Science Edition)
基金
国家自然科学基金
