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Microbiological degumming method for smartweed fibre

A technology of nettle fiber and degumming method, which is applied in the direction of microorganisms, microorganisms, biochemical equipment and methods, etc., which can solve the problems of adverse effects on fiber quality, equipment corrosion environment, poor working conditions, etc., and achieve the reduction of the ratio of parallel threads and stems , low residual glue rate, and mild treatment conditions

Inactive Publication Date: 2009-09-02
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the general chemical method of producing hemp fiber is produced by eliminating colloids composed of lignin, hemicellulose and pectin for a long time, it will bring long process flow, high cost, high energy consumption, equipment corrosion and serious environmental pollution, Poor working conditions and other problems, and the chemical degumming method has a greater adverse effect on the quality of the fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Select different area distributions and different ages of liquor brewing cellars, isolate hundreds of strains of bacteria with strong ability to use grain raw materials from the fermented grains of cellars with different fermentation cycles, and inoculate them in 5g of yeast extract, CaCl 2 2H 2 O0.5g, sodium polypectate 10g, agar 14g, 1M NaOH 9mL, 0.2% bromothymol blue solution 12.5mL, add distilled water to 1000mL, sterilize with 0.1MPa wet pressure for 15min and pour the pectin medium plate , cultured upside down at 34°C for 3 days, select a culture plate whose colony growth and distribution are less than 300 colonies / plate, and the strains with the ability to degumming are selected from the culture plates with concave melting state and yellow change in the culture medium around the colonies, from which the colony growth The strains with strong ability and large pectin degradation ring should be stored at 4°C in 3g beef extract, 10g peptone, 5g sodium chloride, 1000m...

Embodiment 2

[0031] (1) Soaking treatment Put the nettle into water with a temperature of 25°C and soak it for 24 hours, then take it out;

[0032] (2) Degumming bacteria inoculation degumming The degumming bacteria screened and cultivated in embodiment 1 are made into a pH of 4.5 in the proportion of 5% of nettle weight before infiltration, and the bath ratio is a degumming solution of 1: 20, and then put into the infiltration The final nettles were degummed at a temperature of 36°C for 24 hours;

[0033] (3) Washing: the nettle fiber after the degumming is first washed with hot water at 70°C;

[0034] (4) Refining put the washed nettle fiber into the lye with a bath ratio of 1:15 and boil for 1.5 hours, take it out and wash it with water, and remove the water by centrifugation. The lye used contains 0.2% sodium hydroxide by weight percentage , soap 0.2%;

[0035] (5) softening: put the dehydrated fiber into the softening solution prepared with an alkylbenzenesulfonate softening agent at ...

Embodiment 3

[0040] (1) Soaking treatment Put the nettle into water with a temperature of 35°C and soak it for 36 hours, then take it out;

[0041] (2) degumming bacteria inoculation degumming The degumming bacteria screened and cultivated in embodiment 1 are made into a pH of 7.0 in the proportion of 10% of nettle weight before infiltration, and the bath ratio is 1: 30 degumming solution, then put into infiltration The final nettles were degummed at a temperature of 35°C for 36 hours;

[0042] (3) Washing The nettle fiber after the degumming is first washed with hot water at 80°C;

[0043] (4) Refining Putting the washed nettle fiber into the lye with a bath ratio of 1:40 and boiling it for 2.0 hours, taking it out and washing it with water, centrifuging to remove water, and containing 0.4% sodium hydroxide by weight percentage in the lye used , soap 0.3%;

[0044] (5) Softening: Put the dehydrated fiber into the softening solution prepared with fatty acid sulfate ester softening agent ...

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PUM

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Abstract

The method for microbial degumming of nettle fiber disclosed by the invention comprises the steps of soaking nettles first, and then inoculating the soaked nettles with degumming bacteria screened and cultivated from collected distiller's grains Degumming is carried out, and then the degummed fibers are washed, oiled, dehydrated and dried in sequence, and finally opened, carded and packaged. Since the present invention adopts microbial degumming, it can not only reduce the consumption of chemicals such as strong acids and alkalis used in conventional chemical methods, reduce production costs, reduce environmental pollution and equipment corrosion, but also shorten the process flow and reduce labor intensity. , improve efficiency, increase output, and also make the fiber separation more complete, the fiber residual glue rate is lower, and the ratio of parallel silk and stems is reduced, which greatly improves the quality and production rate of nettle fiber.

Description

technical field [0001] The invention belongs to the technical field of nettle fiber preparation, and in particular relates to a microbial degumming method for nettle fiber. Background technique [0002] Today, the demand for natural resources for human survival and development is increasing day by day, but fossil energy is gradually being exhausted. The sharp rise in the price of synthetic fiber raw materials caused by this will directly affect the textile raw material market. In addition, the environmental pollution caused by petrochemical and related industries is also quite serious. In order to deal with these problems, people put forward new social development strategies—sustainable development, environmental protection and circular economy, etc. Biomass is a new emerging industry under the guidance of these strategies. [0003] As an important branch of the biomass industry, the development of wild plant fibers is attracting widespread attention. As one of the varieti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01C1/00C12N1/00D06M13/256D06M13/262
Inventor 华坚张文学郑庆康吴莉丽方晓璞
Owner SICHUAN UNIV
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