High-yield glucose production method

Abstract

The invention discloses a high-yield glucose production method. The method comprises the following steps of: starch mixing; jet liquefaction; flash evaporation thickening; primary enzyme inactivation; saccharification; filtering; secondary enzyme inactivation; decolorizing; ion-exchange impurity removal; evaporative crystallization; and drying, wherein the jet liquefaction comprises primary jet liquefaction and secondary jet liquefaction; and the flash evaporation thickening comprises primary flash evaporation after the primary jet liquefaction and secondary flash evaporation after the secondary jet liquefaction. By using an integrated production process of the secondary jet liquefaction and liquefaction evaporation, the method improves liquefaction and saccharification effects, product quality and the yield, wherein the yield of glucose reaches 108 weight percent; and the method effectively utilizes the energy resource in the production and reduces the energy consumption in the production.

Description

technical field [0001] The invention relates to the technical field of preparing glucose from starch, in particular to a high-yield glucose production method. Background technique [0002] Starch is a carbohydrate polysaccharide, which is a polymer compound composed of many glucose units. Depending on its hydrolysis depth, it can produce glucose, maltodextrin, oligosaccharides, fructose syrup, etc., among which the production capacity is the largest, the use is the most, and the development The fastest is glucose. At present, the production process of producing glucose from starch generally adopts a double-enzyme production process. The production steps include starch powder adjustment, jet liquefaction, flash concentration, first enzyme elimination, saccharification, filtration, second enzyme elimination, and decolorization. , separation and removal of impurities, evaporation, crystallization and centrifugal drying to obtain the finished glucose product. Among them, in th...

AI Technical Summary

Problems solved by technology

At present, the one-shot liquefaction method is widely used in glucose production enterprises, but this method has the disadvantages of difficulty in filtering sugar solution and low product yield due to poor liquefaction effect

Although some enterprises use the secondary injection liquefaction process, there are still unreasonable production control, unsatisfactory liquefaction effect, the specific gravity of the liquefied liquid after liquefaction is only 1.131-1.134, low glucose yield and large steam consumption in the production process. shortcoming

From the theoretical requirements of glucose production, it is hoped that the degree of complete hydrolysis of starch can be achieved, and the theoretical yield of glucose can reach 111.11%. However, due to the occurrence of compound decomposition reactions and losses in the production management process, the actual yield of glucose is only 105%~ 107%, the current highest level of domestic glucose production enterprises is only 106.5%, which reduces the utilization rate of starch