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Pigment extracted from fish skin and preparation process thereof

A pigment and fish skin technology, applied in the field of natural pigments, can solve the problems of extracting pigments from fish skin, and achieve the effect of rich sources, strong protein coloring power, and soft tones

Active Publication Date: 2009-02-04
广东科誉新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no report on extracting pigment from fish skin

Method used

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  • Pigment extracted from fish skin and preparation process thereof
  • Pigment extracted from fish skin and preparation process thereof
  • Pigment extracted from fish skin and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take the skin of 5kg red fish, rinse it with clean water, slice it into strips with a knife, put it into the extraction tank, add hydrochloric acid with a pH value of 3.0 in the mass ratio of fish skin to acid solution 1:3, and repeatedly extract and extract three times, each time The extraction time is 6 hours. The three extracts are combined and then filtered to remove solid impurities. The filtrate is adsorbed by the AB-8 macroporous adsorption resin adsorption column. After the adsorption column is full, it is washed with hydrochloric acid solution with a pH value of 3.0. Remove impurities and salt, then analyze the pigment with absolute ethanol to obtain an analysis solution, control the temperature at 80°C, and concentrate the analysis solution under reduced pressure at 80°C to obtain a natural fish skin red pigment. The natural fish skin pigment meets the following technical indicators (Table 1).

[0019] Table 1 Technical indicators of natural fish skin red pigm...

Embodiment 2

[0022] Take the skin of 10kg large yellow croaker, rinse it with clean water, slice it into strips with a knife, put it into the extraction tank, add sulfuric acid with a pH value of 2.5 in the mass ratio of fish skin to acid solution 1:4, and repeatedly extract and extract three times, each time The extraction time is 5 hours. The three extracts are combined and then filtered to remove solid impurities. The filtrate is adsorbed by the D-101 macroporous adsorption resin adsorption column. After the adsorption column is full, the sulfuric acid solution with a pH value of 2.5 is used Wash to remove impurities and salt, then use absolute ethanol and sulfuric acid to form a mixture with a pH value of 2.0 to analyze the pigment to obtain an analysis solution, control the temperature at 60°C, and concentrate the analysis solution under reduced pressure at 60°C to obtain natural Fish skin yellow pigment. The natural fish skin pigment meets the following technical indicators (Table 2)...

Embodiment 3

[0026] Take the skin of 8kg grass carp, rinse it with clean water, slice it into strips with a knife, put it into the extraction tank, add citric acid with a pH value of 3.5 in the mass ratio of fish skin to acid solution 1:5, and repeatedly extract and extract three times, each time The extraction time is 3 hours. The three extracts are combined and then filtered to remove solid impurities. The filtrate is adsorbed by the DS-401 macroporous adsorption resin adsorption column. After the adsorption column is full, use citric acid with a pH value of 3.5 The solution was washed to remove impurities and salt, and then mixed with absolute ethanol and citric acid to form a mixture with a pH value of 4.5 to analyze the pigment to obtain an analysis solution. The temperature was controlled at 70°C, and the analysis solution was concentrated under reduced pressure at 50°C. Get natural fish skin blue pigment. The natural fish skin pigment meets the following technical indicators (Table ...

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Abstract

The present invention relates to one kind of natural pigment extracted from fish skin and its preparation process. The liquid pigment is prepared with fish skin, and through extraction in acid solution, filtering the extracted liquid, treating with macroporous resin, washing with acid solution to eliminate impurity and salt, ethanolysis with alcohol at 60-80 deg.c to obtain pigment containing solution, and vacuum concentrating at 50-80 deg.c to obtain the liquid pigment. The extraction process is reasonable, simple and feasible, and the obtained pigment is stable, safe and reliable, and may be used in food, beverage and cosmetics.

Description

technical field [0001] The invention relates to a natural pigment, in particular to a natural pigment extracted from fish skin, and also to a preparation method of the pigment. Background technique [0002] With the development of science and technology and people's emphasis on their own health, people gradually realize that many synthetic pigments are extremely harmful to the human body, and even have carcinogenic and teratogenic effects. Benzidine yellow in benzidine pigments is an obvious example. Therefore, many countries have successively legislated to prohibit the use of any synthetic pigments in food. At present, some Nordic countries, such as Norway, have announced a ban on the use of any synthetic pigments in food. Different from synthetic pigments, natural pigments are not only non-toxic and harmless, but some edible natural pigments also have certain nutritional and pharmacological effects. Therefore, in recent years, the amount and variety of natural pigments h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00
Inventor 孙恢礼林丽云吴园涛施平翁世兵李君郑建禄孙小钰
Owner 广东科誉新材料有限公司