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Preparation of pseudomonas aeruginosa fermentation extract and application thereof in printing and dyeing fixing agent

A technology of Pseudomonas aeruginosa and extracts, which is applied in the field of printing and dyeing, can solve the problems of the environmental protection of printing and dyeing fixatives and the use effect that cannot meet the needs of the industry, and achieves improved color fastness index, improved performance and high yield. Effect

Inactive Publication Date: 2019-04-26
黄敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on the fact that the current printing and dyeing color fixing agent can not meet the needs of the industry in terms of environmental protection and use effect, the present invention provides a preparation method of a fermented extract of Pseudomonas aeruginosa and its application in printing and dyeing color fixing agent

Method used

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Examples

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Effect test

preparation example Construction

[0022] A preparation method of Pseudomonas aeruginosa fermentation extract, comprising the following steps:

[0023] (1) Take the fermentation broth of Pseudomonas aeruginosa and treat it in a constant temperature water bath at 50-70°C for 25-35 minutes. After the fermentation broth is cooled to room temperature, adjust the pH to 2.0-4.0 with hydrochloric acid with a concentration of 3.0-5.0mol / L , followed by stirring at a rate of 120-180 rpm for 30-50 minutes to obtain a pretreated fermentation broth;

[0024] (2) performing plate and frame filtration on the obtained pretreated fermented liquid, and obtaining the solid-state fermented liquid through flash drying of the obtained filtrate;

[0025] (3) Extract the obtained solid-state fermented liquid with isopropanol, the addition of isopropanol is 2-3L / kg solid-state fermented liquid, leach for 120-180 minutes, and collect the extract;

[0026] (4) Transfer the obtained extract to a separatory funnel, add ethyl acetate to i...

Embodiment 1

[0038] Prepare Pseudomonas aeruginosa fermentation extract of the present invention according to the following steps:

[0039] (1) Take the fermentation liquid of Pseudomonas aeruginosa and treat it in a constant temperature water bath at 50°C for 25 minutes. After the fermentation liquid is cooled to room temperature, adjust the pH to 2.0 with hydrochloric acid with a concentration of 3.0 mol / L, and then follow the method of 120 rpm Stirring at high speed for 30 minutes to obtain a pretreated fermented liquid;

[0040](2) Filter the pretreated fermentation liquid obtained by plate and frame, and obtain a solid-state fermentation liquid through flash drying of the obtained filtrate. The inlet air temperature of the flash drying is 130° C., the outlet air temperature is 70° C., and the feeding speed is 200 rpm. ;

[0041] (3) The obtained solid-state fermented liquid is extracted with isopropanol, the addition of isopropanol is 2L / kg solid-state fermented liquid, leached for 1...

Embodiment 2

[0048] Prepare Pseudomonas aeruginosa fermentation extract of the present invention according to the following steps:

[0049] (1) Take the fermentation liquid of Pseudomonas aeruginosa, and treat it in a constant temperature water bath at 60°C for 30 minutes. After the fermentation liquid is cooled to room temperature, adjust the pH to 3.0 with hydrochloric acid with a concentration of 4.0mol / L, and then follow the method of 150 rpm Stirring at high speed for 40 minutes to obtain a pretreated fermented liquid;

[0050] (2) Filter the pretreated fermentation liquid obtained by plate and frame, and the obtained filtrate is flash-dried to obtain a solid-state fermentation liquid. The air inlet temperature of flash drying is 140° C., the air outlet temperature is 75° C., and the feeding speed is 250 rpm. ;

[0051] (3) The obtained solid-state fermented liquid is extracted with isopropanol, the addition of isopropanol is 2.5L / kg solid-state fermented liquid, leached for 150 minu...

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Abstract

The invention discloses a method for preparing a pseudomonas aeruginosa fermentation extract and application thereof in a printing and dyeing fixing agent. The preparation method comprises the following steps: performing constant-temperature water bath treatment on a pseudomonas aeruginosa fermentation solution, cooling, regulating to acidity, and stirring; filtering with plate-frame, performing flash drying on filtrate to obtain a solid fermentation solution; extracting the solid fermentation solution with isopropyl alcohol; transferring the extract into a separating funnel, adding ethyl acetate into the funnel, sufficiently oscillating, and standing; performing rotary evaporation and concentration on supernate, and performing two-stage countercurrent extraction and spray drying on the rotary evaporated concentrate with a centrifuge to obtain the pseudomonas aeruginosa fermentation extract. The pseudomonas aeruginosa fermentation extract can be used for effectively improving the colorfastness index of textiles by applying to a printing and dyeing fixing agent, and does not contain formaldehyde and other harmful ingredients to improve the use performance of the printing and dyeingfixing agent.

Description

technical field [0001] The invention relates to the technical field of printing and dyeing, in particular to a preparation method of a fermentation extract of Pseudomonas aeruginosa and its application in a color fixing agent for printing and dyeing. Background technique [0002] As one of the four major natural fibers, cotton fiber is becoming more and more popular due to its good hygroscopicity, warmth retention, comfort and soft touch in terms of wearing performance, and its cleanliness, health care and degradable recycling. In order to meet people's demand for different colors of clothing fabrics, fabrics are therefore dyed. The dyes used for cotton fiber dyeing usually include direct dyes, acid dyes and reactive dyes. Direct dyes, acid dyes and reactive dyes are all anionic dyes, and their molecules contain water-soluble groups such as sulfonic acid groups and carboxyl groups. Both direct dyes and acid dyes are mainly fixed on the fiber by van der Waals force and hydro...

Claims

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Application Information

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IPC IPC(8): D06P5/08D06P5/04D06P5/02C08F283/06C08F220/18C12P1/04C12R1/385
CPCC08F283/06C12P1/04C12N1/205C12R2001/385D06P3/66D06P5/02D06P5/04D06P5/08C08F220/1804
Inventor 黄敏
Owner 黄敏
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