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

A technology of glucoamylase and glucose oxidase, applied in biochemical fiber treatment, fiber treatment, plant fiber and other directions, can solve the problems of low hydrogen peroxide effect and low whiteness of fabrics, and achieve small fiber damage, high dye utilization rate, Good dyeing quality

Inactive Publication Date: 2011-08-17
JIANGNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Due to the treatment of glucoamylase and glucose oxidase, the pH value of the treatment bath is weakly acidic-neutral, and the temperature is also l

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Fabric type: J14.5tex×J14.5tex 133×72 cotton poplin

[0031] Mixed enzyme solution treatment consisting of glucoamylase and glucose oxidase: glucoamylase 1.5g / L, pH value 5.5, nonionic surfactant 2g / L, bath ratio 1:40. Treat at 40-45°C for 40min, then add glucose oxidase 2.0g / L, treat at 40-45°C for 30min, then raise the temperature to 90°C for 90min.

[0032] Alkaline pectinase solution treatment: alkaline pectinase 2.1g / L, 70°C, pH value 7.5, nonionic surfactant 2.3g / L, bath ratio 1:45, treatment for 50min.

[0033] CBD-lignin peroxidase solution treatment: CBD-lignin peroxidase 2.5g / L, pH value 3.5, anionic surfactant 2.5g / L, bath ratio 1:40, treatment 60min. Wash, tumble dry.

[0034] After the above process, the starch removal rate (desizing rate) on the cotton fabric is 98%, the pectin removal rate is 92%, the whiteness is 82, the strength is reduced by 2.3%, the weight loss rate is 1.7%, and the capillary effect is 8.3cm / 30min, no cottonseed husk on the cloth...

Embodiment 2

[0036] Fabric type: 19.5tex×19.5tex 75×72 cotton fine plain cloth

[0037] Mixed enzyme solution treatment consisting of glucoamylase and glucose oxidase: glucoamylase 2.5g / L, pH value 5.5, nonionic surfactant 2.8g / L, bath ratio 1:40. Treat at 40-45°C for 60min, then add glucose oxidase 3.0g / L, treat at 40-45°C for 50min, then raise the temperature to 90°C for 120min.

[0038] Alkaline pectinase solution treatment: Alkaline pectinase 3.6g / L, 70°C, pH 7.5, non-ionic surfactant 3.5g / L, bath ratio 1:45, treatment for 50min.

[0039] CBD-lignin peroxidase solution treatment: CBD-lignin peroxidase 5.0g / L, acid cellulase 2.0g / L, pH 4.5, anionic surfactant 3.5g / L, liquor ratio 1: 40 for 90 minutes. Wash, tumble dry.

[0040] After the above process, the starch removal rate (desizing rate) on the cotton fabric is 93%, the pectin removal rate is 90%, the whiteness is 78, the strength is reduced by 3.3%, the weight loss rate is 2.7%, and the capillary effect is 7.5cm / 30min, no cott...

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PUM

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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 three-step method for pretreatment of cotton fabrics using glucoamylase / glucose oxidase, alkaline pectinase and CBD-lignin peroxidase, which belongs to the technical field of cotton fabric dyeing and finishing pretreatment. 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-...

Claims

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Application Information

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IPC IPC(8): D06L1/14D06L3/02D06M16/00C12S11/00D06M101/06D06L4/13
Inventor 王强范雪荣章金芳徐华君余圆圆王平
Owner JIANGNAN UNIV
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