Method for producing starch glue by low-temperature fast enzymatic conversion

Abstract

The invention discloses a method for producing starch glue by low-temperature fast enzymatic conversion, which comprises the following process steps: 1) starch size mixing: adding clear water in the starch, adjusting the concentration of the starch to 20% to 30% by weight; 2) carrying out enzymolysis on the adjusted starch size, adding 0.003%-0.015% of alpha-amylase of dry basis weight of the starch into the starch size for enzymolysis; 3) carrying out high-temperature enzyme inactivation on the starch after enzymolysis, and simultaneously carrying out gelatinization; and 4) placing the starchafter gelatinization into a starch paste storage tank for standby. The process of the invention shortens production time, reduces energy consumption, greatly improves the viscosity of the product; the product is used in surface sizing of paper, which improves the stiffness of the paper, enhances the ability of compression resistance and tension resistance and reduces the dosage of the starch glue, thus reducing manufacturing cost, and ensuring the competitiveness of enterprises.

Description

technical field [0001] The invention relates to a low-temperature rapid enzymatically converted starch glue production method, in particular suitable for the preparation process of surface sizing starch for papermaking. Background technique [0002] With the upgrading of the quality of paper products, surface sizing is widely used in cultural paper and packaging paper. The purpose of use is to prevent liquid penetration, and to improve the surface bonding strength performance; third, to improve the internal strength performance. In order to reduce production costs, most enterprises use native starch directly after cooking in paper production workshops. The conversion and cooking methods commonly used for native starch are: excess steam method, enzymatic conversion method and thermochemical conversion method. There are two ways of preparation: continuous cooking and batch cooking. Among them, the excess steam method needs to use 125-300% of the steam used to heat the starch...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing surface sizing starch, such as unsatisfactory enhancement effect, high starch consumption and low conversion efficiency, the present invention provides a low-temperature rapid enzymatic conversion starch glue production method. The conversion rate of the method is easy to control and reduces energy consumption. consumption, reducing economic costs

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