淀粉制葡萄糖新过程浅析

Direct conversion of raw starch to glucose

葡萄糖不仅可以广泛应用于食品、医药等行业,而且还是很多大宗发酵生化制品的原料,如氨基酸、抗生素、糖醇等,在人类生活中扮演着重要角色。以淀粉为底物生产葡萄糖的方法有很多,目前流行的是两步法,即将水不溶的淀粉经过高温处理在淀粉酶的作用下转化为可溶于水的糊精的液化工序和在糖化酶作用下将可溶的糊精转化为葡萄糖的糖化工序。虽然该工艺效率高,产品质量稳定,在葡萄糖行业内已经被广泛接受,但存在能耗高,副产物多,糖液纯化成本高等问题。该文介绍了一种全新的葡萄糖生产工艺,以淀粉为底物,在低于淀粉糊化温度下,直接将淀粉转化为葡萄糖。

Glucose is not only widely used in food and medicine industries, but also used as feedstock for biochemical fermentation, such as amino acids, antibiotics and sugar alcohols, etc. There are different ways for glucose production from starch, wherein the method widely accepted by the industry is the one with liquefaction and saccharification using thermostable alpha amylase and glucoamylase. The process is efficient and stable, but could be further improved to reduce the energy consumption and the impurities resulted from high temperature cooking. In this paper, a new process of glucose production directly from granular starch will be introduced.