Method for preparing melanin

A technology of melanin and black rice, applied in chemical instruments and methods, animal feed, azo dyes, etc., can solve the problems of high extraction cost, environmental pollution, waste of resources, etc., and achieve high adhesion, high purity, and raw material saving. Effect

Inactive Publication Date: 2018-12-07
韦献艺
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] Melanin is insoluble in water, which leads to high extraction cost and limited application. Therefore, how to obtain stable and water-soluble melanin is the main link for its efficient application. Now a large amount of cuttlefish is used to prepare natural melanin, which requires a large amount of cuttlefish , and the raw materials of melanin after refining are basically wasted, causing environmental pollution and waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] A method for preparing melanin, comprising the steps of

[0019] 1) Material selection and cleaning, select black rice, black sesame, myrtle and other crops with high melanin content, wash them with clean water, put them in a container, use a mixer to break and stir, and add 5% by mass of pH value 2.0 NaOH solvent, soak at room temperature for 5-8 hours;

[0020] 2) Using a water bath method, wash and filter the mixed solution obtained in step 1), and use the mixed solution obtained as a preliminary extract.

[0021] 3) Place the mixed solution obtained in step 2) in an airtight container, add 80% ethanol by volume, the concentration of ethanol is 70%, ensure the pH value of the mixed solution is 2.0, and heat it to 70°C first , after mixing well, turn off the heat and let the mixture stand for 5 hours.

[0022] 4) Extract the supernatant of the upper part of the mixed solution in the closed container in step 3) for extraction, leaving a black extract, return to step ...

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PUM

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Abstract

The invention provides a method for preparing melanin. The method has simple processing technology, saves raw materials, does not cause environmental pollution, and is energy-saving and friendly to environment. The prepared melanin has high purity, a small particle size and high adhesion, can be freely absorbed by human body. Residues after preparation can be used as an animal feed, so that the utilization rate of raw materials is improved.

Description

technical field [0001] The invention belongs to the field of material processing, in particular to a preparation method of melanin. Background technique [0002] Melanin is an amorphous macromolecular substance that widely exists in plants. It is difficult to dissolve in water and insoluble in organic solvents, and has a complex structure and different properties. Our country has long put forward in the theory of traditional Chinese medicine that melanin is of great benefit to the kidney function of the human body. Therefore, it is said that regular consumption of black food is beneficial to the health of the kidney. Melanin plays an important role in the growth and development of animals. It can improve the ability of animals to survive and compete. It is an important active substance in the human body. It is closely related to the healthy growth and physical failure of the human body. A lot of domestic and foreign research has been done in this regard. research, but very ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00C09B67/54
CPCC09B61/00A23K10/37C09B67/0096
Inventor 韦献艺
Owner 韦献艺
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