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Preparation method of hematoxylon plant dye powder

A technology of plant dyes and hematoxylin, which is applied in the field of preparation of hematoxylin plant dyes, can solve the problems of carcinogenic substances, damage to the wearer, and environmental pollution, etc., and achieve the effects of reducing coronary resistance, not easy to fade, and simple preparation process

Inactive Publication Date: 2017-05-31
ZHEJIANG SCI-TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dyes are divided into two categories: natural and synthetic. At present, synthetic dyes are the most commonly used. Their raw materials and intermediates often contain carcinogenic substances, which not only pollute the environment, but also cause harm to the wearer.

Method used

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Examples

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Effect test

preparation example Construction

[0020] The preparation method of a kind of hematoxylin vegetable dye powder of the present invention adopts the following steps:

[0021] 1) According to the number of parts by mass, select 70-100 parts of hematoxylin, crush it into powder with a pulverizer, put the powder in an extraction tank, add 0.5-1.5 parts of cellulase, 0.5-1.5 parts of protease, and 700-1000 parts of acid Mix with distilled water, stir at 60-100°C for 1.5-2.5 hours, filter to remove residue to obtain filtrate A and filter residue B;

[0022] 2) According to the number of parts by mass, take 70-100 parts of absolute ethanol and 0.5-10 parts of glacial acetic acid, mix evenly, add the filter residue B obtained in step 1), stir at 60-80°C for 0.5-1.5h, filter to remove the residue Obtain filtrate C after;

[0023] 3) Mix the filtrate A and filtrate C obtained in steps 1) and 2) evenly, dry and concentrate through a rotary evaporator to make a concentrated dye solution;

[0024] 4) The concentrated dye s...

Embodiment 1

[0027] Embodiment 1: a kind of preparation method of hematoxylin vegetable dye, this preparation method adopts the following steps:

[0028] 1) According to the number of parts by mass, select 70 parts of hematoxylin, crush it into powder with a pulverizer, put the powder in an extraction tank, add 0.5 part of cellulase, 0.5 part of protease, and mix 700 parts of acidic distilled water with a pH value of 3, Stir at 60°C for 1.5h, and obtain filtrate A and filter residue B after filtering to remove residue;

[0029] 2) According to the number of parts by mass, take 70 parts of absolute ethanol and 0.5 part of glacial acetic acid and mix evenly, add the filter residue B obtained in step 1), stir at 60° C. for 0.5 h, and obtain filtrate C after filtering to remove the residue;

[0030] 3) Mix the filtrate A and filtrate C obtained in steps 1) and 2) uniformly, dry and concentrate in a rotary evaporator with a vacuum degree of 0.07 MPa and a water bath temperature of 60° C. to pre...

Embodiment 2

[0032] Embodiment 2: a kind of preparation method of hematoxylin vegetable dye, this preparation method adopts the following steps:

[0033] 1) According to the number of parts by mass, select 85 parts of hematoxylin, crush it into powder with a pulverizer, put the powder in an extraction tank, add 1 part of cellulase, 1 part of protease, and mix 850 parts of acidic distilled water with a pH value of 4.5, Stir at 80°C for 2 hours, and obtain filtrate A and filter residue B after filtering to remove residue;

[0034] 2) In parts by mass, take 85 parts of absolute ethanol and 5.3 parts of glacial acetic acid and mix evenly, add the filter residue B obtained in step 1), stir at 70° C. for 1 hour, and obtain filtrate C after filtering to remove the residue;

[0035] 3) Mix the filtrate A and filtrate C obtained in steps 1) and 2) uniformly, dry and concentrate in a rotary evaporator with a vacuum degree of 0.085 MPa and a water bath temperature of 65° C. to prepare a dye concentra...

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Abstract

The invention relates to a preparation method of a hematoxylon plant dye powder. The preparation method comprises the following steps: pulverizing hematoxylon into powder by using a pulverizer, putting into an extracting tank, adding cellulase, protease and acid distilled water, mixing, heating, stirring, filtering to obtain a filtrate A and a filter residue B, adding the filter residue B into a mixed solution of anhydrous ethanol and glacial acetic acid, heating, stirring, filtering to obtain a filtrate C, mixing the filtrate A and the filtrate C, drying and concentrating by using a rotary evaporator to obtain a dye concentrate, and performing high-speed centrifugal spray drying on the dye concentrate to obtain the natural dye powder. The dye prepared by the preparation method provided by the invention is non-toxic, harmless, pollution-free and degradable, has high dyeing color fastness, and is unlikely to fade and discolor; the hematoxylon has the efficacy of promoting pipe diameter restoration of an arteriole, can reduce coronary resistance, and has a significant immunosuppressive effect.

Description

technical field [0001] The present invention relates to a kind of preparation method of vegetable dye, more specifically, relate to a kind of preparation method of hematoxylin vegetable dye. Background technique [0002] Dyes are substances that color fibers and other materials that come into direct contact with people's skin during use. Dyes are divided into two categories: natural and synthetic. At present, synthetic dyes are the most commonly used. Their raw materials and intermediates often contain carcinogenic substances, which not only pollute the environment, but also cause harm to the wearer. [0003] With the improvement of people's living standards, people have put forward higher requirements for the safety and health of clothing. Natural plant dyes are favored by more and more people because of their environmental protection and harmlessness. Natural plant dyes extracted from plants Dye, non-toxic and harmless, high color fastness, not easy to fade and change col...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00C09B67/54
CPCC09B61/00C09B67/0096
Inventor 赵丰胡玉兰彭志勤
Owner ZHEJIANG SCI-TECH UNIV
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