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A kind of extraction process of plant dyeing agent

A plant dyeing agent and extraction process technology, applied in the field of plant dyeing agent extraction, can solve the problems of unsuitable development, non-renewable, resource shortage, etc., and achieve the effect of good extraction effect, good compatibility and high extraction rate

Active Publication Date: 2018-05-08
威海大洋纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the commonly used dyes for fabric dyeing are synthetic dyes, because their sources are mainly petroleum and coal. In the long run, resources are becoming increasingly scarce and cannot be regenerated, which does not meet the requirements of sustainable development.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The process for extracting dyeing agent from persimmon leaves comprises the following steps:

[0021] (1) Grind the persimmon leaves to 5 mesh, and then add them to the acid solution, the mass ratio of the persimmon leaves to the acid solution is 1:1, stir and mix evenly, let it stand for 60 minutes, and filter it with a 180-mesh filter cloth to obtain the acid solution Solution;

[0022] (2) Add the acid solution material into water, use 1mol / L hydrochloric acid to adjust the pH to 6, and then perform ultrasonic extraction. The mass ratio of the acid solution material to water is 1:20, and the ultrasonic frequency is 30KHz. Extract for 20 minutes, then ultrasonically extract at 96°C for 10 minutes, and finally at 28°C for 30 minutes, filter with 180-mesh filter cloth, and collect the filtrate;

[0023] (3) Concentrate the filtrate through a reverse osmosis membrane with a pore size of 0.0002 μm to a density of 1.2 g / cm 3 , and then freeze-dried at -20°C into powder. ...

Embodiment 2

[0027] Substantially the same as Example 1, the only difference is that the acid solution in the step (1) has a temperature of 20°C and is made up of the following raw materials in mass percent: 0.75% of L-malic acid, 0.75% of tartaric acid, and 98.5% of water . Add L-malic acid and tartaric acid into water, stir and mix evenly to obtain the acid solution.

Embodiment 3

[0029] It is basically the same as Example 1, except that the temperature of the acid solution in the step (1) is 20° C., and it consists of the following raw materials in mass percent: 0.75% succinic acid, 0.75% tartaric acid, and 98.5% water. Add succinic acid and tartaric acid to water, stir and mix evenly to obtain acid solution.

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PUM

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Abstract

The invention discloses an extraction process of a plant colorant. The extraction process includes the following steps that firstly, acidolysis is carried out; secondly, ultrasonic extraction is carried out; thirdly, filer liquor is concentrated, freeze drying is carried out, and ultrafine grinding is carried out. The extraction process of the plant colorant is good in extraction effect and high in active ingredient extraction ratio, and the obtained colorant has good compatibility with the ecological environment, is biodegradable and free of toxicity or pollution, and has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of extracting plant dyes, in particular to a process for extracting plant dyes. Background technique [0002] At present, the commonly used dyes for fabric dyeing are synthetic dyes, because their sources are mainly petroleum and coal. In the long run, resources are becoming increasingly scarce and cannot be regenerated, which does not meet the requirements of sustainable development. Natural dyes refer to dyes obtained from plants, animals or mineral resources without artificial synthesis and little or no chemical processing. Among them, plant dyes have the longest application history and the widest application range. Vegetable dyes are extracted from the roots, stems, leaves and fruits of plants. Such as: indigo, madder, comfrey, safflower, mulberry, tea, etc. The number of animal dyes is small, mainly from shellfish and cochineal, such as: insect (purple) glue, cochineal red, carmine and so on. Mineral...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00
CPCC09B61/00
Inventor 任志勇
Owner 威海大洋纺织有限公司