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Complex enzyme degumming method for jute or mesot

A degumming method and compound enzyme technology, applied in textiles and papermaking, fiber treatment, biochemical fiber treatment, etc., can solve the problems of large difference in active pH value and cumbersome steps, etc., and achieve short processing time, simple steps and high reliability. spinning effect

Active Publication Date: 2009-12-30
JIANGSU REDBUD DYEING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in the above-mentioned method, when jute fiber is degummed with compound enzyme, because the active pH value requirement difference of pectinase in the compound enzyme and laccase is bigger, therefore need repeatedly adjust the pH value of compound enzyme aqueous solution: need compound The enzyme aqueous solution first adjusts the pH value to 5-5.5, heats up to 55-60°C and keeps it for 25-50 minutes, then adjusts the pH value to 7.5-8, heats up to 60-70°C and keeps it for 25-50 minutes. cumbersome

Method used

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  • Complex enzyme degumming method for jute or mesot

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Unpack the jute or kenaf purchased from the market, and divide them into small handfuls of about 0.5 kg; perform pretreatment in a water bath, the temperature of the water bath is 65°C, and the holding time is 2 hours; acid pectinase and lacquer The enzyme is formulated into a compound enzyme at a weight ratio of 3:7, and the compound enzyme prepared is taken at a weight ratio of 0.5:100 to jute or kenaf, and diluted with water to 12 times the weight of jute or kenaf, and then diluted with the compound enzyme aqueous solution Dipping of jute or kenaf;

[0019] Adjust the pH value of the above diluted solution to 4.5 with acetic acid, raise the temperature to 35°C, and keep it for 50 minutes; then take jute or kenaf out of the solution and pile it up for synergistic stacking treatment, synergistic stacking treatment The time is 24 hours;

[0020] The jute or kenaf after the synergistic stacking treatment is washed with hot water at 80°C for enzyme inactivation treatment...

Embodiment 2

[0023] Unpack the jute or kenaf purchased from the market, divide it into small handfuls of about 0.5 kg, and carry out acid bath and water bath pretreatment. The acid used is concentrated sulfuric acid with a concentration of more than 90%. The temperature of the water bath is 30°C, holding time is 1 hour;

[0024] Acid pectinase and laccase are prepared into a composite enzyme in a weight ratio of 9:1, and the configured composite enzyme is taken in a weight ratio of 5:100 with jute or kenaf, and diluted with water to 40 times the weight of jute or kenaf, Dipping jute or kenaf with diluted complex enzyme aqueous solution;

[0025] Adjust the pH value of the above diluted solution to 6.0 with acetic acid, raise the temperature to 55°C, and keep it for 100 minutes; then take the jute or kenaf out of the solution and pile it up for synergistic stacking treatment, synergistic stacking treatment The time is 12 hours;

[0026] The jute or kenaf after the synergistic stacking tre...

Embodiment 3

[0029] The jute or kenaf purchased from the market is unpacked, divided into small handfuls of about 0.5 kg, and the jute or kenaf is pretreated in an acid bath, and the acid used is acetic acid with a concentration of more than 90%. Acid pectinase and laccase are prepared into a composite enzyme in a weight ratio of 1:1, and the configured composite enzyme is taken in a weight ratio of 1:100 with jute or kenaf, and diluted with water to 20 times the weight of jute or kenaf, Dipping jute or kenaf with diluted complex enzyme aqueous solution;

[0030] Adjust the pH value of the above diluted solution to 5.0 with acetic acid, raise the temperature to 40°C, and keep it for 120 minutes; then take jute or kenaf out of the solution and pile it up for synergistic stacking treatment, synergistic stacking treatment Time is 10 hours;

[0031] The jute or kenaf after the synergistic stacking treatment is washed with hot water at 75°C to perform enzyme inactivation treatment, and the deg...

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Abstract

The present invention relates to a method for degumming jute or gombo hemp by using composite enzyme. Said method includes the following steps: (a), impregnating jute or gombo hemp with composite enzyme aqueous solution prepared by using acid pectase and laccase, the weight ratio of the described composite enzyme aqueous solution and jute or gombo hemp is 12:1-40:1; (b), regulating pH value of the described composite enzyme aqueous solution to 3.0-6.0, heating to 35deg.C-65deg.C and retaining for 20-120min; and (c), making the jute or gombo hemp after which is treated by composite enzyme undergo the process of enzyme deactivation treatment. Besides, before described step c it also includes a step of making synergistic stacking treatment.

Description

technical field [0001] The invention relates to a jute or kenaf degumming method, in particular to a jute or kenaf compound enzyme degumming method. Background technique [0002] Because hemp fiber has good moisture absorption and air permeability, low static electricity and good antibacterial properties, hemp textile and clothing fabrics are more and more popular. The fabrics of existing hemp textiles and clothing mainly refer to flax, ramie raw materials or blending / interweaving of such raw materials with other fibers such as cotton, wool, chemical fiber, silk, etc. Make hemp textiles not be able to be more widely used. And jute is the world's second largest cellulose fiber after cotton, its price is low, and compared with flax and ramie, it has better hygroscopicity and drapability, and its antibacterial ability is second only to hemp, so it has huge application value and develop potential. However, due to the high lignin content in jute or kenaf, which is several time...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01C1/00D06M16/00
Inventor 刘国忠张振华
Owner JIANGSU REDBUD DYEING TECH CO LTD
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