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A kind of extraction and dyeing method of weed dye

An extraction method, the technology of weed grass, which is applied in the field of extraction and dyeing of plant dyes, can solve the problems of large consumption of organic solvents, fast solvent volatilization, and low reuse rate, and achieves short extraction time, few extraction times, and reduced Effects of Reagent Waste

Active Publication Date: 2019-12-20
山东滨州豪盛巾被有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the following problems exist in the extraction of plant dyes: one is the extraction method of multiple high-temperature decoctions, and the other is the extraction method of using a large amount of organic solvents combined with high-temperature decoction. The first extraction method will generate more energy Consumption and long extraction time, resulting in a large loss of dye during the extraction process; the second extraction method consumes a large amount of organic solvent, and the solvent is heated during the extraction process, which will lead to fast volatilization of the solvent and low reuse rate. In addition, The rapid evaporation of solvents will pollute the working environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 A kind of extraction and dyeing method of weed dye

[0023] A kind of extracting method of weed grass dye, the steps are as follows:

[0024] (1) Wash, drain, and pulverize the fresh weed grass until the particle size is 1-3 mm, add it into water, and stir thoroughly, the weight ratio of fresh weed grass to water is 15:100;

[0025] (2) adjust the pH to 4.5 with acetic acid to the solution of step (1), then get respectively cellulase and pectinase and add in the solution, the addition of cellulase is 7.2u / g, the addition of pectinase is 3.0u / g, then heat the solution, control the temperature of the solution at 50°C, and maintain it for 4.0 hours to obtain the enzymatic hydrolysis solution; through enzymatic hydrolysis, the cell wall of the weed grass cells is destroyed, which is beneficial to the extraction of the pigment by the extractant;

[0026] (3) Suction filter the enzymolysis solution, discard the residue, obtain the suction filtrate, and extract the ...

Embodiment 2

[0034] Example 2 A kind of extraction and dyeing method of weed dye

[0035] A kind of extracting method of weed grass dye, the steps are as follows:

[0036] (1) Wash, drain, and pulverize the fresh weed grass until the particle size is 1-3mm, add it into water, and stir thoroughly, the weight ratio of fresh weed grass to water is 10:100;

[0037] (2) adjust the pH to 3.0 with acetic acid to the solution of step (1), then get respectively cellulase and pectinase and add in the solution, the addition of cellulase is 6.9u / g, the addition of pectinase is 2.7u / g, then heat the solution, control the temperature of the solution to 45°C, keep it for 3.5h, and obtain the enzymolysis solution;

[0038] (3) Suction filter the enzymolysis solution, discard the residue, obtain the suction filtrate, and extract the suction filtrate three times with acetone. The acetone is combined to obtain the extract;

[0039] (4) Concentrate the extract with a rotary evaporator, recover acetone duri...

Embodiment 3

[0046] Embodiment 3 A kind of extraction and dyeing method of weed grass dye

[0047] A kind of extracting method of weed grass dye, the steps are as follows:

[0048] (1) Wash, drain, and pulverize the fresh weed grass until the particle size is 1-3 mm, add it into water, and stir thoroughly, the weight ratio of fresh weed grass to water is 20:100;

[0049] (2) adjust the pH to 6.0 with acetic acid to the solution of step (1), then get respectively cellulase and pectinase and add in the solution, the addition of cellulase is 7.6u / g, the addition of pectinase is 3.7u / g, then heat the solution, control the temperature of the solution to 55°C, keep it for 4.5h, and obtain the enzymatic hydrolysis solution;

[0050] (3) Suction filtration of the enzymolysis solution, discard the residue, obtain the suction filtrate, and extract the suction filtrate three times with acetone, in the three extractions, the consumption of acetone is the same, and the volume ratio of acetone to the s...

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Abstract

The invention provides an arthraxon hispidus dye extraction method. The method comprises the following steps: washing fresh arthraxon hispidus, draining the arthraxon hispidus and crushing the arthraxon hispidus, adding the arthraxon hispidus in water, fully stirring the material to obtain a solution; adjusting the pH value of the solution, adding cellulase and pectase for enzymatic hydrolysis to obtain an enzymatic hydrolysis solution; extracting the enzymatic hydrolysis solution by acetone to obtain an extract: and concentrating the extract to obtain a dye. A method for obtaining dyeing linen-cotton fiber by using the arthraxon hispidus dye comprises the following steps: preparing dye liquor, pre-treating linen-cotton fiber, and dyeing the product and obtaining the product. The dye extraction method has the advantages of less extraction frequency, short extraction time, high cycle utilization rate of the extractant, and no pollution on environment; the dye obtained by the extraction method is capable of dyeing the linen-cotton fiber by using the dyeing method provided by the invention, and the obtained product has the advantages of uniform color and good dyeing effect.

Description

technical field [0001] The invention relates to a method for extracting and dyeing plant dyes, in particular to a method for extracting and dyeing grass dyes. Background technique [0002] With people's pursuit of nature and health, plant dyes are highly regarded as natural dyes. Plant dyes are extracted from plants, have good degradability and environmental compatibility, and will not cause environmental pollution and other hazards. In the prior art, the following problems exist in the extraction of plant dyes: one is the extraction method of multiple high-temperature decoctions, and the other is the extraction method of using a large amount of organic solvents combined with high-temperature decoction. The first extraction method will generate more energy consumption and long extraction time, resulting in a large loss of dye during the extraction process; the second extraction method consumes a large amount of organic solvent, and the solvent is heated during the extraction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00D06L1/14D06P1/00D06P1/34D06P1/44D06P1/46D06P3/60
CPCC09B61/00D06L1/14D06P1/0032D06P1/34D06P1/445D06P1/46D06P3/60
Inventor 王建中
Owner 山东滨州豪盛巾被有限公司
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