Method for dyeing wool fabric by using bacterial dye of prodigiosin

A technology of prodigiosin and dyeing method, which is applied in the field of dyeing wool fabrics with bacterial dye prodigiosin, can solve the problems of less research and development of dyes, and achieve the effects of easy operation, simple dyeing method and low equipment requirements

Inactive Publication Date: 2012-06-13
DONGHUA UNIV
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  • Abstract
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  • Claims
  • Application Information

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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
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Effect test

Embodiment 1

[0030] Prodigyrin dye preparation

[0031] First, the purchased bacteria (Serratia marcescens, purchased from the China Medical Bacteria Collection and Management Center) are diluted, and then the diluted bacteria are spread on a plate medium (yeast powder 5g / L, peptone 10g / L , Glucose 10g / L, agar powder 20g / L) and put it in a constant temperature incubator, pick the red and darker strain and spread it on the plate medium, and store the strain at 4℃ . The selected strains were cultured in the seed culture medium (yeast powder 4.5g / L, peptone 12g / L, NaCl 2.5g / L, KCl 3g / L, glucose 2g / L) for 15h, and then connected to the fermentation medium for 30h .

[0032] Separate the supernatant and the bacteria. The supernatant was directly extracted from the aqueous solution with ethyl acetate. The flocs were centrifuged and then concentrated with a rotary evaporator and then extracted in acidic methanol. The methanol extraction method: add the precipitate to 1000mL After adding 500mL meth...

Embodiment 2

[0034] The wool fabric samples will be dyed according to the following processes for testing:

[0035] Process 1 The dosage of prodigosin dye is 4.5% of the mass fraction of wool fabric, 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 performed at 85°C for 60 minutes.

[0036] Process 2: The dosage of prodigosin 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, 90℃ Dyeing for 90min under conditions.

[0037] According to GB / T 3920-1997 "Textile color fastness test color fastness to rubbing", the rubbing fastness is determined according to the AATCC standard for washing resistance test.

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

Embodiment 3

[0041] The effect of different solvents on the dye uptake of prodigosin on wool fabrics under the same conditions is shown in Table 1.

[0042] The reaction conditions of the experiment described in Table 1 are that the mass ratio of methanol to water is 1:3, the ratio of ethyl acetate and N,N-dimethylformamide to water are both 0.5:10, and the dyeing bath ratio is both 1:10, pH is about 5.0, dyeing at 90℃ for 60min.

[0043] Table 1 The dye uptake rate of different solvents Prodigiosin on wool fabrics

[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, and particularly relates to a method for dyeing wool fabrics by using bacterial dye Prodigyrin. Background technique [0002] In recent years, due to environmental and energy issues, people tend to pursue sustainable, environmentally friendly and beneficial methods for human health to prepare dyes. The development of natural dyes is the general trend in the development of applied dyes in the world. Natural dyes refer to dyes that are obtained from plants, animals or mineral resources with little or no chemical processing. Many natural dyes are safe and reliable, with natural hue and close to natural substances. And other advantages, natural, multi-functional is the development trend of dyes. Therefore, screening out 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 th...

Claims

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Application Information

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IPC IPC(8): D06P3/14D06P1/34
Inventor 赵涛钟绵国
Owner DONGHUA UNIV
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