甘薯微孔淀粉制备技术及吸附性能研究

用淀粉糖化酶、α-淀粉酶、普鲁兰酶水解甘薯淀粉制备一种具有吸附功能微孔淀粉载体。研究表明,淀粉糖化酶对生甘薯淀粉作用力最强;淀粉糖化酶水解制备甘薯微孔淀粉最佳工艺条件是:温度45℃,pH值4,酶用量为1％,时间24小时,水解率为51.52％。微孔淀粉对色素、水溶性维生素、油脂的吸附能力远远高于原淀粉。通过交联反应能明显提高微孔淀粉的结构性能和吸附性能。

Study on Preparation and Absorptive Properties of Microporous Sweet-potatostarch Grannular

sweet-potato starch granules hydrolysised by Glucoamylase, α-amylase are provided to absorpt functional compositions. The study shows that the best technique conditions preparating microporous starch granules are:temperature 45℃, Glucoamylase amount 1%, pH4.0, reaction time 24h, the ration of starch hydrolysised 50%. The amount of pigment, vitamins and oils absorbed by microporous starch granules is much larger than original starch granules. The absorptive and structural properties of the microporous starch granules can be obviously enhanced by crosslinked.