Method for preparing granulose by resin catalysis

Abstract

The invention discloses a resin catalysis method of preparing starch glucose which is characterized in that water is added in starch to prepare starch solution with the concentration of 10-40wt. percent; and then catalyst is added to change the solid-liquid ratio or the volume ratio of the catalyst and the starch solution to be 1 to 1-1 to 5; the mixture will react for 10-15h in an enclosed reactor at the temperature of 110-130 DEG C after being evenly stirred; the mixture is hydrolyzed to obtain the starch glucose. The invention can not only overcome the corrosion of the acid method on equipment and reduce the acid-base neutralization and the desalting process, but also overcome the problems of the acid method of high requirements for enzyme purity and activity, hard operating control, hart filtering and long production cycle. The method has the advantages of simple production procedures, less energy consumption and low production cost. The output starch glucose can be widely applied to industries and fields of food, medicine, chemical, papermaking, textile, etc.

Description

technical field [0001] The invention relates to the field of starch, in particular to a method for preparing starch sugar by resin catalysis. The starch sugar produced by the method can be used in industries and fields such as food, pharmacy, chemical industry, papermaking, and textile. Background technique [0002] There are two main methods for the preparation of starch sugar: acid method and enzymatic hydrolysis. The acid sugar production process has high requirements on raw materials and requires refined starch; the pH value required for the reaction is very low, and it is carried out under high temperature and high pressure conditions, so the requirements for high temperature resistance, acid resistance and pressure resistance of the equipment are high; the hydrolysis selectivity is poor and cannot The saccharification solution with high purity is obtained; the hydrolysis conversion rate of starch is low, not exceeding 90%; the produced glucose will undergo decompositi...

AI Technical Summary

Problems solved by technology

The acid sugar production process has high requirements on raw materials and requires refined starch; the pH value required for the reaction is very low, and it is carried out under high temperature and high pressure conditions, so the requirements for high temperature resistance, acid resistance and pressure resistance of the equipment are high; the hydrolysis selectivity is poor and cannot The saccharification solution with high purity is obtained; the hydrolysis conversion rate of starch is low, not exceeding 90%; the produced glucose will undergo decomposition reaction to form pigment, which will affect the quality of sugar; after the reaction, it must be neutralized with alkali, and the product refining cost is high ; Pollution is also relatively large

The enzymatic sugar production process is currently the most used method in the production of starch sugar, but the cost of enzyme refining is high; hydrolysis has high requirements for enzyme preparations; the time of enzymatic hydrolysis is very long, about 24h-48h; the conditions of hydrolysis reaction are fine Numerous and difficult to control; the sugar solution is not easy to filter after the reaction