Extraction method of microbial pigment and method for dyeing lyocell fibers by adopting same

A technology of microbial pigment and extraction method, which is applied in the field of lyocell fiber dyeing and microbial pigment extraction, can solve the problems of poor compatibility, difficulty in attaching microbial pigment to its surface, weakening dyeing efficiency, etc., and achieve low production cost, solid Good color effect, reduced dry rubbing fastness and soaping fastness

Active Publication Date: 2020-07-31
当阳市鸿阳新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The literature survey shows that the microbial dyeing of many textiles has been widely concerned, but the microbial pigment dyeing of lyocell fiber is rarely reported, and the dyeing of lyocell fiber is mainly dyed with artificially synthesized dyes.
The main component of lyocell fiber is cellulose fiber, but its cellulose is derived from wood pulp, which is essentially different from the cellulose in cotton fiber. Cotton fiber is easy to be dyed by microorganisms. Lyocell fiber is cellulose dissolved in N -Methylmorpholine-N-oxide solvent, and then precipitated, its compatibility with microbial pigments is poor, microbial pigments are difficult to attach to its surface, thus affecting and weakening the dyeing efficiency

Method used

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  • Extraction method of microbial pigment and method for dyeing lyocell fibers by adopting same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Fusarium was used as raw material to extract the red pigment.

[0037] 1) Inoculate the purchased Fusarium into the seed culture solution and cultivate it on a shaker at a temperature of 20-30°C for 16 hours and a shaker speed of 130r / min; the seed culture solution includes 3g / L yeast powder , 5g / L peptone, 2g / L sodium chloride, 2g / L potassium chloride.

[0038] 2) Inoculate the bacterial seed solution into the fermentation medium and cultivate it on a shaker; the culture temperature is 20-30°C, the time is 36 hours, and the shaker speed is 195r / min; the fermentation medium includes peptone 15g / L, 0.3% propylene glycol , 2g / L magnesium sulfate, 2g / L sodium chloride, 1g / L potassium chloride.

[0039] 3) After the fermentation, use a centrifuge to centrifuge the fermentation broth at 8000r / min for 6 minutes; then extract the centrifuged product with ethyl acetate; concentrate and dry the extract to obtain a red pigment powder.

Embodiment 2

[0041] Using Chryseobacterium as raw material, the yellow pigment is extracted.

[0042] 1) Inoculate the purchased Chryseobacterium into the seed culture solution and cultivate it on a shaker at a temperature of 20-30°C for 18 hours and a shaker speed of 120r / min; the seed culture solution includes 4g / L yeast powder, 8g / L peptone, 3g / L sodium chloride, 4g / L potassium chloride.

[0043] 2) Inoculate the bacterial seed solution into the fermentation medium and cultivate it on a shaker; the culture temperature is 20-30°C, the time is 50 hours, and the shaker speed is 150r / min; the fermentation medium includes peptone 17g / L, 0.4% propylene glycol , 4g / L magnesium sulfate, 4g / L sodium chloride, 2g / L potassium chloride.

[0044] 3) After the fermentation, use a centrifuge to centrifuge the fermentation broth at 8000r / min for 8 minutes; then extract the centrifuged product with ethyl acetate; concentrate and dry the extract to obtain a yellow pigment powder.

Embodiment 3

[0046] Violet bacillus is used as raw material to extract the purple pigment.

[0047] 1) Inoculate the purchased violaceum bacillus into the seed culture solution and then cultivate it on a shaker at a temperature of 20-30°C for 20 hours and a shaker speed of 150r / min; the seed culture solution includes 5g / L yeast powder, 10g / L peptone, 3g / L sodium chloride, 4g / L potassium chloride.

[0048] 2) Inoculate the bacterial seed solution into the fermentation medium and cultivate it on a shaker; the culture temperature is 20-30°C, the time is 70h, and the shaker speed is 180r / min; the fermentation medium includes peptone 20g / L, 0.5% propylene glycol , 3g / L magnesium sulfate, 3g / L sodium chloride, 1g / L potassium chloride, and the rest water.

[0049] 3) After the fermentation, use a centrifuge to centrifuge the fermentation broth at 10,000 r / min for 5 minutes; then extract the centrifuged product with ethyl acetate; concentrate and dry the extract to obtain a purple pigment powder. ...

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Abstract

The invention discloses an extraction method of a microbial pigment and a method for dyeing lyocell fibers by using the same. The extraction method of the microbial pigment comprises the following steps: inoculating bacteria into a seed culture solution, culturing on a shaking table, inoculating the bacterium seed solution into a fermentation culture solution, culturing on the shaking table; afterthe fermentation is finished, centrifuging the fermentation solution, extracting the centrifugal product by using ethyl acetate; and finally, concentrating and drying the extract to obtain the microbial pigment powder. When the pigment is used for dyeing the lyocell fibers; lyocell fibers are added into a water solution containing the microbial pigment at the room temperature; dyeing is carried out for 20 to 40 minutes, the bath ratio is 1: (20-30), then alum is added, the temperature is raised to 80 DEG C, then triethanolamine is added, the temperature is maintained for dyeing for 20-40 minutes, finally a color fixing agent is added, cooling is conducted after the color fixing treatment is finished, and the fibers are taken out, washed with cold water, soaped, washed with water, and dried to obtain dyed lyocell fibers. The dyeing of the microbial pigment on the surface of the lyocell fibers is realized.

Description

technical field [0001] The invention relates to the technical field of lyocell fibers, in particular to a method for extracting microbial pigments and a method for dyeing lyocell fibers by using the same. Background technique [0002] Recently, with the rapid development of synthetic dyes, various new dyes have been prepared and widely used in various textiles. The production, processing and discharge of waste liquid after dyeing will cause certain harm to the environment. Therefore, as people have stricter requirements on the quality of dyes, the safety of dyes, and environmental protection, some new environmentally friendly and renewable dyes have attracted widespread attention. Among them, microbial dyes are favored for their unique advantages. Microbial dyes are not affected by seasons and climates, and can be cultivated throughout the year; they have the characteristics of low production cost, short production cycle, simple process, rich variety, and large output. Amo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00C09B67/54D06P1/34D06P1/645D06P3/60D06P5/08C08G18/76C08G18/66C08G18/48C08G18/34C08G18/12C08G18/28
CPCC09B61/00C09B67/0096D06P1/34D06P1/645D06P3/60D06P5/08C08G18/6692C08G18/4825C08G18/348C08G18/7614C08G18/12C08G18/2805
Inventor 叶兆清董雄伟叶小波胡志钢
Owner 当阳市鸿阳新材料科技有限公司
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