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Preparation of anthocyanin dye and application of anthocyanin dye in cellulosic fiber fabric dyeing

A fabric dyeing and anthocyanin technology, applied in natural dyes and its application fields, can solve the problems of cellulose fiber lack of affinity, poor direct dyeing performance, small anthocyanin structure, etc., achieve remarkable dyeing effect and shorten extraction time , cheap effect

Inactive Publication Date: 2016-02-24
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the cellulose fiber in the acidic bath (pH≤3) has little ionization and the structure of anthocyanin is small, and the planarity is low, resulting in the lack of affinity of anthocyanin to the cellulose fiber, the direct dyeing performance is poor, and the dyeing rate is relatively low. Low

Method used

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  • Preparation of anthocyanin dye and application of anthocyanin dye in cellulosic fiber fabric dyeing
  • Preparation of anthocyanin dye and application of anthocyanin dye in cellulosic fiber fabric dyeing

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Broad-leaved Ophiopogon japonicus fruit, remove impurities (grass leaves, bellflower, etc.), wash and drain, grind into a slurry, weigh 1kg of the slurry, add 5L of 60% acidified ethanol aqueous solution (containing 25mL of trifluoroacetic acid), and sonicate at 40°C (40KHz, 250W) extraction for 60min, filter to obtain anthocyanin extract, add petroleum ether by equal volume, oscillate at room temperature, separate liquid, after liquid separation, form petroleum ether layer located in the upper layer and ethanol water layer located in the lower layer; anthocyanin extract The lipids in the anthocyanin extract are dissolved in petroleum ether; the petroleum ether layer is removed (that is, the lipids in the anthocyanin extract are removed). Finally, the ethanol water layer was distilled under reduced pressure (vacuum degree -0.05 MPa, temperature 40° C.) to recover ethanol to obtain about 2.2 L of anthocyanin natural dye concentrate.

[0045] The preparation method of the...

Embodiment 2

[0047]The fruit of Ophiopogon japonicus lobata, remove impurities (grass leaves, bellflower, etc.), wash and drain, grind into a slurry, weigh 1kg of the slurry, add 20L of 80% acidified ethanol aqueous solution (containing 100mL of acetic acid), and ultrasonically (40KHz, 250W) to extract for 45 minutes, filter to obtain anthocyanin extract, add petroleum ether in an equal volume, shake at room temperature, and separate liquids to remove lipids in the anthocyanin extract. Finally, the ethanol water layer was distilled under reduced pressure to recover ethanol to obtain about 4.2 L of anthocyanin natural dye concentrate.

[0048] The preparation method of the above-mentioned 80% acidified ethanol aqueous solution is as follows: firstly prepare an ethanol aqueous solution whose volume concentration of ethanol is 80%, and then add 5 ml of acetic acid to 1 L of ethanol aqueous solution.

Embodiment 3

[0050] After washing and draining the purple black grape skins, grind them into a slurry, weigh 1kg of the slurry, add 10L of 60% acidified ethanol aqueous solution (containing 100mL of hydrochloric acid), extract by ultrasonic (40KHz, 250W) at 30°C for 30min, and filter to obtain anthocyanin extraction solution, add petroleum ether in an equal volume, shake at room temperature, and separate the liquid to remove lipids in the anthocyanin extract. Finally, the ethanol water layer was distilled under reduced pressure to recover ethanol to obtain about 4.5 L of anthocyanin natural dye concentrate.

[0051] The preparation method of the above-mentioned 60% acidified ethanol aqueous solution is as follows: firstly prepare an ethanol aqueous solution whose volume concentration of ethanol is 60%, and then add 10 ml of hydrochloric acid to 1 L of ethanol aqueous solution.

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Abstract

The invention discloses a preparation method of a natural anthocyanin dye. The preparation method comprises the following steps: pounding the plant raw material containing anthocyanin pigment to form plant raw material slurry; adding acidified ethanol water into the plant raw material slurry, and carrying out ultrasonic extraction; adding petroleum ether with the same volume into the obtained anthocyanin extracting solution; carrying out reduced pressure distillation on the ethanol water layer obtained through liquid separation, so as to obtain a natural anthocyanin dye concentration solution. The invention further provides a method for dyeing fabric through the natural anthocyanin dye prepared through the method. The method comprises the following steps: carrying out modification treatment on the cellulosic fiber fabric; weighing the natural anthocyanin dye concentration solution with the weight 2-20% of that of the fabric; weighing a metal mordant with the weight 2-10% of that of the fabric; adding water to form dye liquor with the bath ratio of (1: 50)-(1: 100); after wetting the modified fabric with warm water, dyeing for 60-90 minutes at the temperature of 40-80 DEG C; after dyeing, taking out the fabric, washing, and drying at the temperature of 45-55 DEG C.

Description

technical field [0001] The invention relates to the field of natural dyes and their applications, in particular to the preparation of anthocyanin natural dyes and their dyeing application on modified cellulose fiber fabrics. Background technique [0002] With the increase of people's awareness of environmental protection and health, the use of natural dyes has attracted more and more attention. Natural dyes have good compatibility with the environment, are biodegradable, non-toxic and even have certain health care functions. In addition, natural dyes are rich in natural resources, and there is no problem of exhaustion of resources. The color is natural and has a very broad market prospect. [0003] Anthocyanins belong to flavonoid polyphenolic compounds, which are composed of anthocyanins and sugar groups. Anthocyanins can be obtained from a wide range of sources, not only from the colorful petals of plants, but also from leaves, rhizomes, tubers, fruits and seeds, and can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00D06P3/60D06P1/34D06P1/673D06P1/653
Inventor 周文龙王华印唐志荣胡伟
Owner ZHEJIANG SCI-TECH UNIV
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