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Method for dyeing wool fabric by using bacterial dye of prodigiosin

A technology of prodigiosin and a dyeing method is applied in the field of dyeing wool fabrics by using bacterial dye prodigiosin, which can solve the problems of less research and development of dyes, and achieve the effects of easy operation, good application prospect and low equipment requirements.

Inactive Publication Date: 2013-07-10
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there are few literature reports on the development and research of this dye

Method used

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  • Method for dyeing wool fabric by using bacterial dye of prodigiosin
  • Method for dyeing wool fabric by using bacterial dye of prodigiosin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of prodigiosin dye

[0031] First, the purchased strains (Serratia marcescens, purchased from the China Medical Bacteria Preservation Management Center) were diluted, and then the diluted bacteria were spread on the plate medium (yeast powder 5g / L, peptone 10g / L , glucose 10g / L, agar powder 20g / L) and cultivated in a constant temperature incubator, pick the strain with red pigment and darker color and spread it on the plate medium, and store the strain at 4°C . The screened bacterial strains were cultured in the seed medium (yeast powder 4.5g / L, peptone 12g / L, NaCl 2.5g / L, KCl 3g / L, glucose 2g / L) for 15h, then inserted into the fermentation medium and cultivated for 30h .

[0032] The supernatant and bacteria were separated separately. The supernatant is directly extracted from the aqueous solution with ethyl acetate, and the flocs are first centrifuged and then concentrated with a rotary evaporator and then extracted in acidic methanol. The method of met...

Embodiment 2

[0034] The woolen swatches will be dyed according to the following processes for testing:

[0035] Process 1 The amount of prodigiosin dye is 4.5% of the wool fabric mass fraction, the mass ratio of ethyl acetate to water is 0.5:6, the bath ratio is 1:10, the pH is 4.0, and the dyeing is at 85°C for 60 minutes.

[0036] Process 2: The amount of prodigiosin dye is 2% of the mass fraction of wool fabric, the mass ratio of N,N-dimethylformamide to water is 0.3:10, the bath ratio is 1:15, the pH value is 6.0, and the temperature is 90°C Dyeing under the conditions for 90min.

[0037] According to GB / T 3920-1997 "Textile Color Fastness Test Color Fastness to Rubbing", the rubbing fastness is measured according to the AATCC standard for washing resistance test.

[0038] Finally, the dry rubbing fastness of the fabric dyed by process 1 is grade 4, and the wet rubbing fastness is 3-4; the dry rubbing fastness of the fabric dyed by process 2 is grade 4, and the wet rubbing fastness is...

Embodiment 3

[0041] See Table 1 for the effects of different solvents on the dyeing rate of prodigiosin on wool fabrics under the same conditions.

[0042] The reaction condition of the experiment described in table 1 is that the mass ratio of methyl alcohol and water is 1: 3, and the ratio of ethyl acetate and N, N-dimethylformamide and water is all 0.5: 10, and dyeing bath ratio is 1:10, the pH is about 5.0, all dyed at 90°C for 60min.

[0043] Table 1 The dye uptake rate of different solvent prodigiosin to wool fabric

[0044]

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Abstract

The invention relates to a method for dyeing wool fabric by using bacterial dye of prodigiosin, which comprises the steps of: (1), dissolving the prodigiosin by using ethyl acetate or N,N-dimethyl formamide, and then adding the dissolved prodigiosin into water to make dyeing solution; and (2), dyeing wool fabric by using the dyeing solution, wherein use amount of the prodigiosin is 0.1-6% of massfraction of the wool fabric; dyeing bath ratio is 1:10 to 1:20; the pH value of the dyeing solution is adjusted to be 4.0-6.0; dyeing temperature is 80-90 DEG C; and dyeing time is 30-90 min. The dyeing method disclosed by the invention is simple; dyed wool fabric has excellent washing fastness and rubbing fastness, is colorful, excellent in antibiotic property, and at least 90% in bacteriostaticrate, and has wide application prospect.

Description

technical field [0001] The invention belongs to the field of dyeing wool fabrics, in particular to a method for dyeing wool fabrics by using bacterial dye prodigiosin. Background technique [0002] In recent years, due to the influence of environmental problems and energy problems, people tend to pursue sustainable, environmentally friendly and beneficial methods to prepare dyes. The development of natural dyes is the general trend of the development of applied dyes in the world. Natural dyes refer to dyes obtained from plants, animals or mineral resources with little or no chemical processing. Many natural dyes are safe, reliable, natural in color, and close to natural substances. And other advantages, natural, multi-functional is the development trend of dyes. Therefore, screening microorganisms that can produce natural dyes from natural resources, and then developing new varieties of natural dyes, especially functional natural dyes, has broad prospects. With the develop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P3/14D06P1/34
Inventor 赵涛钟绵国
Owner DONGHUA UNIV
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