Melanin extracted from Cinnamomum burmanni peel, preparation method and uses thereof

A technology for melanin and peel, which is applied in chemical instruments and methods, azo dyes, organic dyes, etc., and can solve problems such as no extraction of melanin.

Inactive Publication Date: 2008-04-09
GUANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the many methods for preparing melanin, the melanin extracted from plants is favored by consumers due to its high safety and wide application range. At present, there is no relevant report on the extraction of melanin from the pericarp of Cinnamomum sinensis.

Method used

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  • Melanin extracted from Cinnamomum burmanni peel, preparation method and uses thereof
  • Melanin extracted from Cinnamomum burmanni peel, preparation method and uses thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] 1) Get fresh pericarp of Yinxiang fruit, wash it with clear water and dry it for later use; take 100 grams of Yinxiang pericarp, extract it with 2 liters of ammonia water with a volume concentration of 10% at normal temperature for 12 hours, filter it with double-layer gauze, Separating the pericarp of Cinnamomum burmanii and other impurities to obtain the extract;

[0021] 2) Use 2 mol / L hydrochloric acid to adjust the pH value of the extract to 2.5 to precipitate the melanin, separate the melanin precipitate by suction filtration, and then dry the melanin precipitate in a vacuum environment at 50°C for 2 hours to obtain a crude melanin extract thing;

[0022] 3) Put 4 grams of crude melanin extract into 100 ml of 7mol / L hydrochloric acid, hydrolyze in a water bath at 100°C for 6 hours, and then separate the melanin precipitate by suction filtration to obtain melanin;

[0023] 4) Dissolve the obtained melanin with 100 ml of ammonia water with a volume concentration of...

Embodiment 2

[0026] 1) Take the pericarp of 8 minutes ripe yin xiang fruit, wash it with clear water and dry it for later use; take 5 kg of yin xiang fruit peel, extract it with 400 liters of 0.5mol / L sodium hydroxide at normal temperature for 24 hours, and wash it with a double-layer Filtrate with gauze to separate the pericarp of Cinnamomum burmanii and other impurities to obtain the extract;

[0027] 2) Adjust the pH value of the extract to 3 with acetic acid with a volume concentration of 20%, so that the melanin is precipitated, and the melanin precipitate is separated by suction filtration, and then the melanin precipitate is dried at 30°C for 6 hours to obtain the crude melanin Extract;

[0028] 3) put 0.2 kg of crude melanin extract into 10 liters of 4 mol / L hydrochloric acid, hydrolyze in a water bath at 60° C. for 8 hours, and then separate the melanin precipitate by suction filtration to obtain melanin;

[0029] 4) Dissolve the obtained melanin with 2 liters of 1mol / L sodium hy...

Embodiment 3

[0032] 1) Get the pericarp of fresh yin xiang fruit, wash it with clear water and dry it for subsequent use; get 20 kilograms of yin yang fruit peel, use 200 liters of volume concentration to be 20% ammonia water for leaching at normal temperature for 16 hours, filter with double-layer gauze, Separating the pericarp of Cinnamomum burmanii and other impurities to obtain the extract;

[0033] 2) Use 1 mol / L hydrochloric acid to adjust the pH value of the extract to 2.5 to precipitate the melanin, separate the melanin precipitate by suction filtration, and then dry the melanin precipitate in a vacuum environment at 50°C for 5 hours to obtain a crude melanin extract thing;

[0034] 3) Put 1 kg of the crude melanin extract into 12 liters of 4 mol / L hydrochloric acid, hydrolyze it in a water bath at 90°C for 6 hours, and then separate the melanin precipitate by suction filtration to obtain melanin;

[0035] 4) Dissolve the obtained melanin with 30 liters of 0.5mol / L sodium hydroxid...

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Abstract

The invention discloses a melanin which is extracted from burmann cinnamon bark and a preparation method and application thereof. The preparation method of the melanin extraction comprises the following steps: 1) the burmann cinnamon bark is immersed and extracted by using alkaline solution to be removed of the burmann cinnamon bark and to obtain leaching fluid; 2) the leaching fluid is acidized, leading the melanin to be precipitated, separated and dried, and then the melanin coarse extraction is made; 3) the melanin coarse extraction is put into hydrochloric acid to be hydrolyzed and separated to get the melanin; 4) the obtained melanin is dissolved in alkali solution so as to get the melanin solution which is then extracted by using petroleum ether and chloroform in sequence; 5) the extracted solution is acidified to be separate to get the melanin precipitate, which is then washed in clean water and dried to get the melanin product. The melanin made in the method has strong coloring ability, light fastness and good thermal stability and oxidation resistance performance, can be broadly applied and can particularly well applied to the fields such as edible pigment, cosmetic additive, industrial colorant, and staining agent, etc.

Description

(1) Technical field: [0001] The invention relates to the technical field of melanin production, in particular to the melanin extracted from the pericarp of Cinnamomum burmanii; the invention also relates to the preparation method and application of the melanin. (two) background technology: [0002] Melanin (Malannin) is a general term for a class of phenolic or indole biomacromolecular pigments that are ubiquitous in the biological world with complex and diverse structures. It provides structural strength for organisms or protects organisms from ultraviolet rays, ionizing radiation, heavy gold pollution, Injury from environmental stresses such as low temperature and high temperature. Melanin is not only a kind of photoprotectant, anti-radiation agent, chelating agent, biological antioxidant and immune enhancer, but also a kind of biosemiconductor material and photoelectric transfer material; recent studies have also found that melanin has anti-venom, anti-AIDS Virus replica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00
Inventor 王恒山甘典华潘英明
Owner GUANGXI NORMAL UNIV
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