食品科学 ›› 1999, Vol. 20 ›› Issue (1): 37-39.doi: 10.7506/spkx1002-6630-199901012

• 工艺技术 • 上一篇    下一篇

酶-化学复合法制备醋酸酯淀粉

 刘粼   

  1.  浙江工业大学生物与环境工程学院
  • 出版日期:1999-01-15 发布日期:2011-12-04

   Liu-Lin   

  • Online:1999-01-15 Published:2011-12-04

摘要: 淀粉经淀粉酶预处理制备醋酸酯淀粉的实验显示:在30℃下经0.3%的酶处理60min后,在相同工艺中,产物的取代度比对照增加约40%,乙酰化剂利用率提高约30%;当水解度低于6.0%时,产品粘度在较宽的pH内表现出一定程度的增加。表明使用性能改善。这些效应对改进工艺条件和产物性能具有应用价值。

关键词:  , 醋酸酯淀粉; 淀粉酶; 取代度(DS); 水解度(DE); 粘度(&eta, app);

Abstract:  The starch was pretreated with a-amylase and then acetylated. The effects of the main parameters on the product properties were analysed. The results indicated that the DS value of the product and acetylation efficiency increased about 40% and 30% respectively after the enzymatic pretreatment under 38T, 0.3 % of ratio of [E] / [S] for 60min. Within wide PH value range, the ηapp of the product showed no significant varyation. Thus, the technological condition and product properties got improved. This approach can be conjointed into the present process readily.

Key words: Anyloacetate a-Amlyase Degree of Substitution (DS) Dextrose equivalent (DE) Apparent viscosely (&eta, app);