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Extraction method of high-coloring-power plant green pigment

An extraction method and green pigment technology, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of weak coloring ability, insufficient pigment purification, solvent residue, etc., achieve bright color, improve pigment purity, A stable effect

Inactive Publication Date: 2015-04-29
孙亚彬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the traditional extraction method, there are disadvantages such as solvent residue, low purity, peculiar smell, and poor quality, which have brought great troubles to the extraction process.
Pigment purification is not enough, the coloring ability is not strong, and the stability is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for extracting plant green pigments with strong coloring power, comprising the steps of:

[0017] (1) Extract Enteromorpha filtrate: take Enteromorpha and dry and crush it to 120 mesh, add 0.5mol / L hydrochloric acid at a solid-to-liquid ratio of 1:12 and soak for 50 minutes, control the microwave power at 700W, heat for 130s, take it out, cool and filter, and repeat the operation twice;

[0018] (2) Extract the moss filtrate: extract the moss with deionized water with a weight ratio of 1:10 at a temperature of 80°C for 35 minutes, and adjust the mixture of the above coarse residue and water to a pH value of 4 with hydrochloric acid with a mass fraction of 2%. -5, at a temperature of 80°C, heat-preserve and cook the above mixture for 45 minutes, and filter to obtain the extract;

[0019] (3) Centrifugal extraction: Mix Enteromorpha filtrate, moss filtrate and 80% ethanol according to the mass ratio of 1:1:5, adjust the pH of the mixture to 3-4 with citric acid,...

Embodiment 2

[0023] A method for extracting plant green pigments with strong coloring power, comprising the steps of:

[0024] (1) Extract Enteromorpha filtrate: take Enteromorpha and dry and crush it to 120 mesh, add 0.3mol / L hydrochloric acid to soak for 60 min at a solid-to-liquid ratio of 1:15, control the microwave power at 800W, heat for 120s, take it out, cool and filter, and repeat the operation twice;

[0025] (2) Extract the moss filtrate: extract the moss with deionized water with a weight ratio of 1:10 at a temperature of 90°C for 40 minutes, and adjust the mixture of the above coarse residue and water to a pH value of 4 with hydrochloric acid with a mass fraction of 2%. -5, at a temperature of 90°C, heat-preserve and cook the above mixture for 55 minutes, and filter to obtain the extract;

[0026] (3) Centrifugal extraction: Mix Enteromorpha filtrate, moss filtrate and 80% ethanol according to the mass ratio of 1:1:5, adjust the pH of the mixture to 3-4 with citric acid, cent...

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PUM

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Abstract

The invention discloses an extraction method of high-coloring-power plant green pigment, which is characterized by comprising the following steps: (1) Enteromorpha filtrate extraction; (2) moss filtrate extraction; (3) centrifugal extraction; (4) constant-temperature ultrasonic extraction; and (5) macroporous resin adsorption. The algae and moss are used as the raw materials to extract the plant green pigment; and an ultrafiltration-macroporous resin adsorption combined process is adopted to enhance the pigment purity; the whole process has the advantages of low energy consumption, abundant raw material sources and low cost; and the pigment product has the advantages of fewer impurities, bright color, stable properties and high color value. The extraction method is simple, has the advantages of high operability and high extraction efficiency, and is easy for amplification and suitable for mass industrial production.

Description

technical field [0001] The invention belongs to the technical field of pigment extraction, and in particular relates to a method for extracting plant green pigment with strong coloring power. Background technique [0002] Bryophytes are small green plants with a simple structure consisting of only stems and leaves, sometimes flattened fronds, without true roots and vascular bundles. Bryophytes like dark and humid environments, and generally grow on bare rock walls, or wet forests and swamps. The internal structure of the plant is simple. The rhizoid is composed of a single cell or a row of cells without a central column. Only in higher types, there are cell groups similar to the conduction tissue. Although the shape and structure of bryophytes are so simple, they still have important biological significance to terrestrial organisms because bryophytes have stem-like differentiation and spores scattered in the air. [0003] The algal bodies of Enteromorpha are grass-green, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00
CPCC09B61/00
Inventor 孙亚彬
Owner 孙亚彬
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