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Method for carrying out antibacterial and antioxidant finishing on damask silk by enzyme method

An anti-oxidative and enzymatic technology, applied in the direction of enzyme/microorganism biochemical treatment, biochemical fiber treatment, improved hand-feeling fiber, etc., can solve the problems of influence, prone to mildew and aging, low storage stability of silk silk

Pending Publication Date: 2020-10-23
湖州绫绢研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve anti-yellowing and antibacterial composite finishing, some studies have studied the impregnation treatment of silk with nano-titanium dioxide-chitooligosaccharide system, and at the same time improved the antibacterial and anti-ultraviolet properties of silk. It is also easy to have an adverse effect on the feel of silk fabrics when used in combination
[0004] In order to solve the technical problems of low storage stability, mildew and aging of damask silk, the present invention adopts biological enzymatic method to graft catechin and chitosan oligosaccharide on the surface of damask silk fabric, and carry out antibacterial and anti-oxidative finishing of damask silk enzymatic method , aiming at alleviating mildew and brittleness that are prone to occur in the above-mentioned silk products during storage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Adsorption of catechin and oligochitosan on damask fabric: prepare a finishing solution with oligochitosan and catechin with a molecular weight of 2000, and soak the fabric in the above finishing solution; among them, oligochitosan 5 g / L , catechin 2 g / L, pH 5, bath ratio 1:8, dipping treatment temperature 20°C, time 10 min;

[0022] (2) Laccase catalyzed the grafting of catechin and chitosan oligosaccharides on silk fabrics: Add laccase to the treatment system in step (1), in which 0.5 U / mL of laccase, pH 6, liquor ratio 1:8, treated The temperature was 45°C, and the time was 2 h; after the treatment, the damask fabric was fully washed with deionized water at 30°C, and dried at 50°C.

[0023] Sample 1: Damask fabric without any treatment

[0024] Sample 2: no chitosan oligosaccharide was added in the processing of step (1) and the processing of step (2);

[0025] Sample 3: no catechin was added in the treatment of step (1) and step (2);

[0026] Sample 4: proces...

Embodiment 2

[0029] (1) Silk fabrics absorb catechin and oligochitosan: prepare a finishing solution with oligochitosan and catechin with a molecular weight of 3000, and soak the fabric in the above finishing solution; among them, oligochitosan 20 g / L , catechin 10 g / L, pH 6, liquor ratio 1:15, dipping treatment temperature 30°C, time 30 min;

[0030] (2) Laccase-catalyzed grafting of catechin and chitooligosaccharides on silk fabrics: add laccase to the treatment system in step (1), wherein laccase 2 U / mL, pH 5, bath ratio 1: 15, treatment The temperature is 50°C, and the time is 6 h; after the treatment, the fabric is fully washed with deionized water at 30°C, and dried at 50°C.

[0031] Sample 5: silk fabric without any treatment

[0032] Sample 6: no chitosan oligosaccharide was added in the treatment of step (1) and the treatment of step (2);

[0033] Sample 7: no catechin was added in the treatment of step (1) and step (2);

[0034] Sample 8: processed through steps (1) and (2). ...

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Abstract

The invention discloses a method for carrying out antibacterial and antioxidant finishing on damask silk by an enzyme method, and belongs to the technical field of textile dyeing and finishing. The method comprises the following steps of: firstly, impregnating damask silk fabric in a catechin and chitosan oligosaccharide mixed solution, then adding laccase into a system, and by virtue of the catalytic oxidation effect of the laccase, realizing the polymerization of tyrosine in real silk and phenolic hydroxyl in catechin and the Schiff base reaction of the tyrosine in the real silk and amino onchitosan oligosaccharide, thus realizing the antibacterial and antioxidant finishing of the damask silk by the enzyme method. The method specifically comprises the following steps of: (1) adsorbing the catechin and the chitosan oligosaccharide by the damask silk; and (2) catalyzing the damask silk to graft the catechin and the chitosan oligosaccharide by the laccase. Compared with a method for carrying out chemical finishing on the damask silk by a high-temperature baking crosslinking method, the method disclosed by the invention has the advantages of lower production energy consumption, goodantibacterial and antioxidant effects and less yellowing and strength loss of damask silk fabric.

Description

technical field [0001] The invention relates to an enzymatic method for antibacterial and antioxidative finishing of damask silk, which belongs to the technical field of textile dyeing and finishing. Background technique [0002] Among the silk products, damask silk is a traditional silk weaving handicraft, which is mainly used for the processing of calligraphy, painting, and arts and crafts. Among them, silk fabrics are mostly used for painting and calligraphy mounting, and silk fabrics are mostly made of glue alum water (prepared from alum and gelatin in an appropriate proportion) on degummed plain silk fabrics, and processed into alum silk for painting and calligraphy production. Alum silk and cooked rice paper are often used in traditional Chinese painting. Compared with cooked rice paper, painting on alum silk has the advantages of moist and delicate, smooth brush and ink. Whether it is damask or silk products, during use and storage, they are susceptible to yellowing,...

Claims

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Application Information

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IPC IPC(8): D06M15/03D06M16/00D06M13/152D06M101/12
CPCD06M13/152D06M15/03D06M16/00D06M16/003D06M2101/12D06M2200/50
Inventor 杨健王飞宇王平
Owner 湖州绫绢研究所
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