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Deep-eutectic solvent and microorganism combined degumming method for flax roving

A technology of low eutectic solvent and degumming method, which is applied in bacterial retting, textiles and papermaking, etc., can solve the problems of complicated processing process, long biological degumming time and poor degumming effect.

Active Publication Date: 2021-09-10
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The object of the present invention is to provide a method for combined degumming of flax rovings with a deep eutectic solvent and microorganisms, using an aqueous solution of a deep eutectic solvent to pretreat the flax rovings, the aqueous solution of the deep eutectic solvent disperses the fibers in the flax rovings, and removes flax Part of the colloid in the roving is then inserted into microorganisms to degumming the flax roving, thereby solving the technical problems of long-time biological degumming, complicated processing process and poor degumming effect

Method used

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  • Deep-eutectic solvent and microorganism combined degumming method for flax roving
  • Deep-eutectic solvent and microorganism combined degumming method for flax roving
  • Deep-eutectic solvent and microorganism combined degumming method for flax roving

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Effect test

Embodiment 1

[0046] S1, deep eutectic solvent pretreatment steps: (1) choline chloride: urea is mixed and heated and melted in a molar ratio of 1:2 to synthesize a deep eutectic solvent; the deep eutectic solvent is mixed with water to obtain a water content of 10% (2) Mix the dried flax roving with the deep eutectic solvent aqueous solution at a mass ratio of 1:60, and treat it in a water bath at a temperature of 90°C for 1 hour. After the treatment, take out the flax roving and wash to remove the flax Aqueous solution of deep eutectic solvent remaining on the surface.

[0047] S2. Seed culture of degummed strains: Inoculate the strains frozen at -80°C into a 500mL Erlenmeyer flask containing 100ml of seed medium at an inoculum size of 2%, and cultivate for 6 hours at a temperature of 37°C and a rotational speed of 150rpm. The formula of the seed medium is peptone 10g / L, yeast powder 5g / L, and NaCl 10g / L.

[0048] S3, scale-up cultivation of degummed bacterial strains: the seed solution ...

Embodiment 2

[0052] S1, deep eutectic solvent pretreatment steps: (1) choline chloride: urea is mixed and heated and melted in a molar ratio of 1:2 to synthesize a deep eutectic solvent; the deep eutectic solvent is mixed with water to obtain a water content of 20% (2) Mix the dried flax roving with the deep eutectic solvent aqueous solution at a mass ratio of 1:60, and treat it in a water bath at 80°C for 1.5 hours. After the treatment, take out the flax roving and rinse to remove Aqueous solutions of deep eutectic solvents remaining on flax surfaces.

[0053] S2. Seed culture of degummed strains: Inoculate the strains frozen at -80°C into a 500mL Erlenmeyer flask containing 200ml of seed medium at an inoculum size of 3%, and cultivate for 8 hours at a temperature of 35°C and a rotation speed of 180rpm. The formula of the seed medium is peptone 10g / L, yeast powder 5g / L, and NaCl 10g / L.

[0054] S3, amplified culture of degummed strains: the seed solution obtained in step S2 is inserted i...

Embodiment 3

[0058] S1, deep eutectic solvent pretreatment steps: (1) choline chloride: urea is mixed and heated and melted in a molar ratio of 1:2 to synthesize a deep eutectic solvent; the deep eutectic solvent is mixed with water to obtain a water content of 30% (2) Mix the dried flax roving with the deep eutectic solvent aqueous solution according to the bath mass ratio of 1:50, and treat it in a water bath at a temperature of 100°C for 1.5h. After the treatment, take out the flax roving and rinse Removal of residual deep eutectic solvent aqueous solution on the surface of flax.

[0059] S2. Seed culture of degummed strains: The strains that will be frozen and stored at -80°C are inoculated into a 500mL triangular flask containing 200ml of seed medium at an inoculum size of 5%, cultivated at a temperature of 36°C and a speed of 170rpm for 6 hours . Wherein the formula of seed medium is peptone 10g / L, yeast powder 5g / L, NaCl 10g / L.

[0060] S3, amplified culture of degummed strains: t...

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Abstract

The invention relates to a deep-eutectic solvent and microorganism combined degumming method for flax roving, and belongs to the technical field of biology. The deep-eutectic solvent and microorganism combined degumming method comprises the steps that the flax roving is added into an aqueous solution of a deep-eutectic solvent, heated and then taken out; the aqueous solution of the deep-eutectic solvent enables fibers in the flax roving to be dispersed, and hydrogen bonds between hemicelluloses and pectin molecules in the flax roving are damaged, so that removal of colloids in the flax roving is promoted; and the taken-out flax roving is washed to remove the residual aqueous solution of the deep-eutectic solvent on the surface, and then degumming microorganisms are inoculated for microbial degumming. According to the deep-eutectic solvent and microorganism combined degumming method for the flax roving, the aqueous solution of the deep-eutectic solvent is used for pretreating the flax roving, the aqueous solution of the deep-eutectic solvent can effectively disperse roving fibers and remove part of the colloid, and subsequent biological degumming is facilitated. The process does not need acid-base pretreatment, is environment-friendly and good in degumming effect, and has a good application prospect in flax roving degumming.

Description

technical field [0001] The invention belongs to the field of biotechnology, and more specifically relates to a method for combined degumming of flax roving by a deep eutectic solvent and microorganisms. Background technique [0002] The scientific name of flax is Linum usitatissimum L., which belongs to the family Linaceae and the genus Flax. According to the use, it can be divided into flax for fiber, flax for oil, and flax for oil and fiber. At present, the flax fiber used in the global flax textile industry mainly comes from flax for fiber. As the earliest natural fiber used by humans, flax fiber was planted and used by the ancient Egyptians as early as 20,000 years ago. Flax fiber has good moisture absorption, fast heat dissipation, anti-ultraviolet and anti-static effects, and is widely used in the textile field. In recent years, with the improvement of consumers' living standards, the strengthening of environmental protection concepts, and the change of consumption c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/04
CPCD01C1/04D10B2201/04
Inventor 余龙江向梦雄李雁蓉舒潼付春华杨英王慧慧李攀登余天意胡振华
Owner HUAZHONG UNIV OF SCI & TECH
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