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Method for extracting chestnut shell brown pigment from chestnut shell and application of chestnut shell brown pigment in hair dye

A technology of chestnut shell and brown pigment is applied in chemical instruments and methods, medical preparations containing active ingredients, organic dyes, etc. The effect of application value, less damage and less environmental impact

Active Publication Date: 2021-10-22
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the extraction methods of chestnut shell brown pigment in chestnut shells include: steam distillation, alkaline water or alkaline dilute alcohol extraction, solvent extraction, supercritical fluid extraction and microwave method, etc., and most The following problems exist: the water solubility of the crude extract is poor, and there are precipitates after dissolution; resin adsorption is used for purification and purification, the process is complicated and the cost is high; Certain toxicity, does not conform to the concept of green chemistry

Method used

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  • Method for extracting chestnut shell brown pigment from chestnut shell and application of chestnut shell brown pigment in hair dye
  • Method for extracting chestnut shell brown pigment from chestnut shell and application of chestnut shell brown pigment in hair dye
  • Method for extracting chestnut shell brown pigment from chestnut shell and application of chestnut shell brown pigment in hair dye

Examples

Experimental program
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Effect test

Embodiment 1

[0053] This embodiment compares the influence of different sodium dodecyl sulfate (SDS) concentrations on extracting chestnut shell brown pigment in chestnut shells, and the specific process is as follows:

[0054] Take 0.2g chestnut shell powder respectively, add 0, 0.2, 0.4, 0.5, 0.6, 0.8wt% SDS, other conditions are fixed: particle size 60 mesh, 15wt% urea, V [Bmim]OAc / V 40％乙醇1:1, the ratio of solid to liquid is 1:10g / ml, the ultrasonic temperature is 80°C, the time is 70min, the power is 350W, and the supernatant is taken after centrifugation.

[0055] Determination of the yield under different SDS concentrations; the results are as follows figure 2 shown.

[0056] analyze figure 2 It can be seen that with the increase of SDS concentration, the yield increases, and when the SDS concentration is 0.4wt%, the yield is the largest, and after exceeding 0.4%, the yield decreases; the reason for the increase of SDS may be that SDS has a unique The amphiphile molecular stru...

Embodiment 2

[0058] This embodiment compares the influence of different urea concentrations on extracting chestnut shell brown pigment in chestnut shells, and the specific process is as follows:

[0059] Take 0.2g chestnut shell powder respectively, add 0, 2.5, 5, 10, 15, 20wt% urea, other conditions are fixed: particle size 60 mesh, 0.4wt% SDS, V [Bmim]OAc / V 40％乙醇 1:1, the ratio of solid to liquid is 1:10g / ml, the ultrasonic temperature is 80°C, the time is 70min, the power is 350W, and the supernatant is taken after centrifugation.

[0060] Determination of the yield under different urea concentrations; the results are as follows image 3 shown.

[0061] analyze image 3 It can be seen that with the increase of urea concentration, the yield increases, and when the urea concentration is 2.5wt%, the yield is the largest, and when it exceeds 2.5%, the yield decreases.

Embodiment 3

[0063] This embodiment compares the influence of different solid-liquid ratios on extracting chestnut shell brown pigment in chestnut shells, and the specific process is as follows:

[0064] Take 0.2g chestnut shell powder respectively, particle size is 60 mesh, solid-liquid ratio is 1:10, 1:20, 1:30, 1:40, 1:50g / ml, other conditions are fixed: 0.4wt%SDS, 2.5 wt% urea, V [Bmim]OAc / V 40％乙醇 The ratio is 1:1, the ultrasonic temperature is 80°C, the time is 70min, the power is 350W, and the supernatant is taken after centrifugation.

[0065] Measure the yield under different material-liquid ratios; the results are as follows Figure 4 shown.

[0066] analyze Figure 4 It can be seen that when the ratio of solid to liquid is from 1:10 to 1:30, it may be due to the increase in the amount of extracting liquid that the chestnut shell polyphenols can be extracted more easily, so the yield has increased significantly. However, when the ratio of solid to liquid is 1:40, the yield d...

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Abstract

The invention provides a method for extracting chestnut shell brown pigment from chestnut shell and application of the chestnut shell brown pigment in a hair dye. The extraction method comprises the following steps: adding powdery chestnut shell into an ethanol aqueous solution containing an ionic liquid and a bond breaking agent, carrying out ultrasonic extraction and centrifugal separation, and taking supernate so as to obtain chestnut shell brown pigment extraction liquid. According to the extraction method, a mixed solvent composed of an ionic liquid called as a green solvent and an ethanol water solution is adopted to replace a traditional extraction agent, a certain bond breaking agent is added, and an ultrasonic technology is assisted, so that the extraction efficiency is high, the effect is good, and the good practical application value is achieved; and after a hair dye prepared from the chestnut shell brown pigment extracted by the method provided by the invention is used for dyeing hair, the hair has no obvious fading behavior after repeated washing and ultraviolet radiation, the hair scales on the surface of the hair are relatively flat and rarely tilt, the damage degree of the internal structure of the hair is relatively small, and the completeness of the hair is relatively well maintained.

Description

technical field [0001] The invention relates to the technical field of extracting plant active ingredients, more specifically, to a method for extracting chestnut shell brown pigment from chestnut shells and its application in hair dyes. Background technique [0002] Chestnut originated in China, which belongs to the nut plant of the Fagaceae Chestnut genus; the use of chestnut as medicine has been recorded in ancient medical books of all dynasties, and its medicinal parts include the root, bark, leaves, flowers, exocarp and endocarp of chestnut , Involucre, etc. [0003] Chestnut husk is the exocarp of chestnut. It has sweet, astringent and flat medicinal properties, and has the effects of reducing adverse reactions and stopping bleeding. Chestnut shell brown pigment is a natural pigment extracted from chestnut shells. It has the characteristics of good water solubility, strong coloring power, good stability, strong anti-oxidation and antibacterial effects, and is a rare p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00A61K8/9789A61Q5/10A61Q5/12
CPCC09B61/00A61K8/9789A61Q5/10A61Q5/12A61K2800/43Y02P20/54
Inventor 李春美朱婷沈齐若男
Owner HUAZHONG AGRI UNIV
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