Method for producing glucose

Abstract

The invention discloses a method for producing glucose. The method comprises the following steps of: mixing starch, performing jet liquefying, thickening through flash evaporation, killing enzyme for the first time, saccharifying, filtering, killing enzyme for the second time, decoloring, removing impurities through ion exchanging, evaporating and crystallizing and drying, wherein in the step of starch mixing, starch raw material powder is mixed with water so as to obtain farinaceous size which is mixed with amylase so as to obtain a mixture, in the step of jet liquefying, the mixture is liquefied through jetting so as to obtain a primary mixture, the primary mixture and the amylase are mixed and then liquefied through jetting for the second time so as to obtain a secondary mixture, and the step of thickening through flash evaporation comprises primary flash evaporation after jet liquefying for the first time and secondary flash evaporation after jet liquefying for the second time. According to the method, the production technology integrating jet liquefying for two times and liquefying evaporation is adopted, so that the liquefying and saccharifying effect is improved, the product quality and the product yield are improved, the yield of the glucose reaches 108wt%, furthermore, the energy source in the production is effectively used, and the energy consumption for production is lowered.

Description

technical field [0001] The invention relates to the technical field of preparing glucose from starch, in particular to a method for producing glucose. 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 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, ...

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