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Preparation method of sea urchin shell pigment

A sea urchin and pigment technology, applied in food preparation, chemical instruments and methods, azo dyes, etc., can solve the problems of cumbersome, time-consuming, low-efficiency, unsuitable sea urchin echinoshell pigments, etc., to reduce production costs and social costs, High efficiency, low toxicity effect

Active Publication Date: 2012-09-05
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the research on the extraction of sea urchin echinacea pigments at home and abroad, most of them use hydrochloric acid to dissolve echinacea, and then use organic solvents such as ether, chloroform, and acetone to directly extract. mass production extraction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0034] Example 1 Preparation of sea urchin echinacea pigment powder

[0035] Weigh 200 g of the echinacea of ​​Dalian purple sea urchin from which the gonads have been removed, rinse it with clear water, and dry it at 50° C., pulverize the material with a superfine pulverizer to reach a particle size of 50 mesh, and add 3% (w / w) of citric acid to the echinacea of ​​sea urchin after crushing Mix well, grind for 30 minutes with a vibrating grinder, and extract with 5L acidic ethanol solution (volume ratio of formic acid:ethanol:water=10:30:60) for 30 minutes at room temperature. The extraction solution of sea urchin echinacea pigment is filtered under reduced pressure, concentrated by rotary evaporation at 55°C until it has no alcohol smell, and the paste-like pigment mother solution is obtained.

[0036] Add 50ml of absolute ethanol and the above-mentioned pasty pigment mother liquor and mix evenly, then put it into the extraction kettle, CO 2 After being condensed and pressur...

example 2

[0038] Example 2 Preparation of sea urchin echinacea pigment powder

[0039]Weigh 200 g of the echinacea of ​​Dalian purple sea urchin from which the gonads have been removed, rinse it with clear water, and dry it at 50° C., pulverize the material with a superfine pulverizer to reach a particle size of 50 mesh, and add 3% (w / w) of citric acid to the echinacea of ​​sea urchin after crushing Mix well and grind for 30 minutes using a vibrating mill. Extract with 10L acidic ethanol solution (formic acid: ethanol: water = 5: 30: 65) at room temperature for 30 min. The extraction solution of sea urchin echinacea pigment is filtered under reduced pressure, concentrated by rotary evaporation at 55°C until it has no alcohol smell, and the paste-like pigment mother solution is obtained.

[0040] Add 50ml of absolute ethanol and the above paste pigment and mix evenly, then put it into the extraction kettle, CO 2 After condensing and boosting the pressure, it enters the extraction tank....

example 3

[0042] Example 3 Preparation of Sea Urchin Echinacea Pigment Powder

[0043] Weigh 200 g of the echinacea of ​​Dalian purple sea urchin from which the gonads have been removed, rinse it with clear water, and dry it at 50° C., pulverize the material with a superfine pulverizer to reach a particle size of 50 mesh, and add 3% (w / w) of citric acid to the echinacea of ​​sea urchin after crushing Mix well, grind for 30 minutes with a vibrating grinder, and extract with 4L of acidic ethanol solution (formic acid:ethanol:water=15:25:60) for 30 minutes at room temperature. The extraction solution of sea urchin echinacea pigment is filtered under reduced pressure, concentrated by rotary evaporation at 55°C until it has no alcohol smell, and the paste-like pigment mother solution is obtained.

[0044] Add 50ml of absolute ethanol and paste pigment mother liquor and mix evenly, then put it into the extraction kettle, CO 2 After being condensed and pressurized, it enters the extraction ta...

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Abstract

The invention relates to a preparation method of sea urchin shell pigment, comprising the following steps of: cleaning and drying sea urchin shell from which gonad has been removed, shredding until the particle size reaches 20 meshes to 200 meshes; grinding the shredded sea urchin shell together with 0.5% to 10% (w / w) citric acid or sodium dihydrogen phosphate for 10 min to 120 min; soaking and extracting with an acid solution, filtering and condensing in vacuum to obtain a paste mother solution; mixing absolute ethyl alcohol and the paste mother solution and then adding the mixture into an extraction kettle; condensing and boosting CO2, making the condensed and boosted CO2 enter the extraction kettle; separating at 30 30-60 DEG C under 20MPa to 50MPa, decompressing, condensing, freezing and drying to produce a crude product; refining, and then adsorbing and separating by employing a macroporous resin column and a reversed phase column to obtain a refined product with the purity higher than 95%. In the invention, the waste sea urchin shell is used as a raw material to produce nontoxic products, which can be directly applied to fields such as medicine, foods, health products, cosmetics and the like. The extraction process has simple operation and high efficiency, and the used resources used can be recycled, thereby the production cost and social cost can be greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of pigments prepared from natural marine waste materials, and also relates to food coloring pigments. In particular, the pigment is prepared by a method of supercritical extraction and purification. Background technique [0002] With the improvement of people's living standards, the requirements for food color, aroma and taste are getting higher and higher. Therefore, synthetic pigments are widely added in food to change the color of food and improve people's appetite. However, because the edible safety of synthetic pigments has attracted more and more attention, many synthetic pigments have been banned from being used in food processing. Therefore, the extraction of natural pigments from animals and plants has gradually aroused people's interest, and its development and utilization have become a major research hotspot. The main reason is that natural pigments are directly derived from animals, plants and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00C09B67/54C09B67/10C09B67/04A23L1/275A23L5/43
Inventor 朱蓓薇董秀萍周大勇秦磊李冬梅王晓东郑杰张彦杰谭慧吕艳红
Owner DALIAN POLYTECHNIC UNIVERSITY