The traditional wet milling corn starch processing technology is mainly to fully steep in the steeping solution containing sulfuric acid, and then use the crushing and separation method when extracting the starch, which is a "chemical-mechanical" process. However, due to the influence of the process principle, the wet-based fiber contains more water and more sticky starch, which will increase the energy consumption of the overall process, which is not conducive to the significant increase of the overall starch yield. Therefore, the improved space is very large.

In recent years, with the development and progress of science and technology, the development of enzymology technology has been greatly promoted. Based on the composition and composition of corn grains and the enzymatic hydrolysis principle of plant fiber-degrading enzymes, a more suitable fiber-degrading compound enzyme is screened out, and a new compound enzyme preparation developed can effectively reduce the moisture in the fiber, starch content.

Without changing the production process and adding larger production equipment, only 0.01% of the compound enzyme needs to be added to the fiber washing tank, which can reduce the moisture content of the wet-based fiber by 4.11%, and reduce the total starch content by 3.6%. It can greatly increase the starch yield (0.21%) and protein yield (0.27%), thereby reducing energy consumption and helping to significantly increase the overall starch yield.