Method for pretreating cotton fabrics by adopting glucoamylase/glucose oxidase, pectinase and CBD (cellulose-binding domain)-lignin peroxidase

Abstract

The invention provides a method for pretreating cotton fabrics by adopting glucoamylase / glucose oxidase, pectinase and CBD (cellulose-binding domain)-lignin peroxidase, belonging to the technical field of cotton fabric dyeing and finishing pretreatment. The method is characterized in that the cotton fabrics are firstly treated in mixed enzyme solution containing the glucoamylase and the glucose oxidase and the glucoamylase catalyzes the starch size on the fabrics to be decomposed into glucose so as to eliminate the size; the glucose oxidase catalyzes the glucose and oxygen to act to generate hydrogen peroxide; the generated hydrogen peroxide not only plays a role of bleaching but also can damage the hydrophobic surface structure of the cotton to expose the lower pectic substances; then the cotton fabrics are treated in alkaline pectinase solution to remove the pectic substances through decomposition; and finally the cotton fabrics are treated in CBD-lignin peroxidase solution to finally remove the cotton seed hulls through decomposing the lignin in the cotton seed hulls. The method provided by the invention can replace the traditional chemical treatment method to realize full bio-enzyme pretreatment of the cotton fabrics, and at the same time the traditional hydrogen peroxide can be no longer adopted for bleaching.

Description

technical field

[0001] The invention discloses a cotton fabric pretreatment method with glucoamylase, glucose oxidase, pectinase and CBD-lignin peroxidase, which belongs to the technical field of pretreatment of cotton fabric dyeing and finishing. Background technique

[0002] Cotton fabric has excellent wearability and is an important class of textiles. However, in the growth process of cotton fiber, there are a certain amount of substances that play a protective role, as well as substances generated in the process of biological metabolism and cellulose symbiosis, these cellulose symbiosis mainly include pectin substances, nitrogenous substances, waxes, etc. Like substances, natural pigments, etc., as well as cotton seed husks entrained when cotton fibers are stripped. These impurities are called natural impurities on cotton fabrics. In addition, before cotton fiber is spun into yarn and woven into fabric, it is necessary to put a layer of starch-based slurry on the warp ...