马铃薯渣是马铃薯淀粉生产过程中产生的副产物,含有大量的淀粉和膳食纤维以及少量蛋白质,是一种宝贵的资源。文中采用α-淀粉酶和糖化酶处理马铃薯渣,分离出的液态部分再经发酵培养出可供食用的蛋白质,固体部分经漂白、改性后成为膳食纤维,薯渣得到全利用。设计了工艺流程,对酶的选择和工艺条件作了优化。测定了产物蛋白质和膳食纤维的理化指标。

Potato residue was generated during the process of potato starch production.It contains a lot of starch and dietary fiber and small amounts of protein.It is a valuable resource.In this paper α-amylase and glucoamylase were used to treat potato residue.And then the liquid portion was separated and fermented into edible protein.The solid part was bleached,modified to dietary fiber.Thus the potato residue was fully used.This study designed the process,selected the enzymes and optimized the process conditions.The protein and dietary fiber's physical and chemical properties were determined.