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A kind of method of extracting chestnut husk brown pigment in chestnut shell and application in hair dye

A technology of chestnut shell and brown pigment, applied in chemical instruments and methods, medical preparations containing active ingredients, organic dyes, etc., can solve problems that do not conform to the concept of green chemistry, high cost, and deposits, and achieve good practice Application value, less damage, less environmental impact

Active Publication Date: 2022-07-29
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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  • A kind of method of extracting chestnut husk brown pigment in chestnut shell and application in hair dye
  • A kind of method of extracting chestnut husk brown pigment in chestnut shell and application in hair dye
  • A kind of method of extracting chestnut husk brown pigment in chestnut shell and application in hair dye

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Experimental program
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Effect test

Embodiment 1

[0053] The present embodiment compares the effects of different concentrations of sodium dodecyl sulfate (SDS) on the extraction of chestnut husk brown pigment in the chestnut shell, 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It is 1:1, the material-liquid ratio 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] The yields were determined at 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. When the SDS concentration is 0.4 wt%, the yield is the largest, and when it exceeds 0.4%, the yield decreases; The amphiphilic molecular structure can significantly reduce the interfacial te...

Embodiment 2

[0058] The present embodiment compares the influence of different urea concentrations on the extraction of chestnut husk brown pigment in the chestnut shell, 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 It is 1:1, the material-liquid ratio 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 yields at different urea concentrations; results such as image 3 shown.

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

Embodiment 3

[0063] The present embodiment compares the effects of different solid-liquid ratios on the extraction of chestnut husk brown pigment in the chestnut shell, and the specific process is as follows:

[0064] Take 0.2g of chestnut shell powder respectively, the particle size is 60 mesh, the ratio of solid to liquid 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 1:1, ultrasonic temperature 80°C, time 70min, power 350W, and the supernatant was taken after centrifugation.

[0065] Determination of yield under different solid-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 because the amount of extracting solution is increased, which makes it easier to extract the polyphenols from the chestnut shell, so the yield increases significantly. However, when the solid-liquid ratio is 1:40, the yield d...

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Abstract

The invention provides a method for extracting chestnut husk brown pigment from chestnut shells and its application in hair dyes. The extraction method comprises: adding powdered chestnut shells to an ethanol aqueous solution containing ionic liquid and a bond breaking agent, and ultrasonically extracting , after centrifugation, the supernatant was taken to obtain the chestnut husk brown pigment extract. The extraction method provided by the invention adopts the mixed solvent composed of ionic liquid known as green solvent and ethanol aqueous solution to replace the traditional extraction agent, adds a certain bond breaking agent, and is supplemented by ultrasonic technology. The extraction efficiency is high and the effect is good. After the hair dyeing agent prepared from the chestnut husk brown pigment extracted by the method provided by the present invention dyes the hair, the hair has no obvious fading behavior after repeated water washing and ultraviolet irradiation, and the hair scales on the surface of the hair are relatively flat, and there are few Lifting phenomenon, the damage to the internal structure of the hair is less, and the integrity of the hair is better maintained.

Description

technical field [0001] The invention relates to the technical field of extraction of plant active ingredients, and more particularly, to a method for extracting chestnut husk brown pigment from chestnut shells and its application in hair dyes. Background technique [0002] Chestnut originated in China and belongs to the nut plant of the Fagaceae family; the use of chestnut as medicine has been recorded in ancient medical books of all dynasties, and its medicinal parts include chestnut root, bark, leaf, flower, exocarp, endocarp , involucre, etc. [0003] Chestnut shell is the exocarp of chestnut, which is sweet, astringent, and flat. Chestnut husk brown pigment is a kind of natural pigment extracted from chestnut shell. It has the characteristics of good water solubility, strong tinting strength, good stability, strong antioxidant and antibacterial effects. It is a rare property in the world. One of the stable natural pigments with high development value. [0004] In the ...

Claims

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Application Information

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Patent Type & Authority Patents(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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