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Method for preparing zeaxanthin through in situ enrichment

A technology for in-situ enrichment of zeaxanthin, applied in natural dyes, chemical instruments and methods, azo dyes, etc., can solve problems such as limited zeaxanthin resources, achieve good application prospects, reduce usage, and eye fatigue Mitigation effect

Inactive Publication Date: 2015-07-29
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resources of zeaxanthin are very limited. The zeaxanthin currently on the market is mainly obtained from lutein through chemical synthesis. The zeaxanthin obtained by the chemical method is meso-zeaxanthin. Meso has not been seen yet. -Safety report of zeaxanthin

Method used

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  • Method for preparing zeaxanthin through in situ enrichment
  • Method for preparing zeaxanthin through in situ enrichment
  • Method for preparing zeaxanthin through in situ enrichment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Using wolfberry fruit as raw material, zeaxanthin was prepared according to the following process:

[0048] Take wolfberry fruit, freeze-dry, grind into powder, pass through a 100-mesh sieve, take 1000 grams of powder under the sieve, add 10 liters of ethyl acetate according to the ratio of wolfberry fruit mass:solvent volume=1g:10ml, stir and extract at 30°C for 2 hours, extract After the end, let it stand for precipitation and separation; obtain the extract and filter residue;

[0049] Add 10 liters of ethyl acetate to the filter residue again for the second extraction; stir and extract at 30°C for 2 hours; after the extraction, let it stand for precipitation and separation; obtain the extract and filter residue;

[0050] The extraction was repeated 3 times; the combined extracts were concentrated in vacuum until the organic solvent evaporated, then 5 liters of 10% KOH ethanol solution was added, and stirred and saponified at 30°C for 20 hours;

[0051] After the sap...

Embodiment 2

[0054] Using the fruit of Jindenglong as raw material, zeaxanthin was prepared according to the following process:

[0055] Get the brocade lantern fruit freeze-dried, grind into powder, pass through a 100-mesh sieve, take 1000 grams of the powder under the sieve, add 50 liters of acetone according to the ratio of brocade lantern fruit mass:solvent volume=1g:50ml, stir and extract at 60°C for 5 hours, extract After the end, let it stand for precipitation and separation; obtain the extract and filter residue;

[0056] Add 50 liters of acetone to the filter residue again for the second extraction; stir and extract at 60°C for 5 hours; after the extraction, let it stand for precipitation and separation; obtain the extract and filter residue;

[0057] The extraction was repeated 3 times; the combined extracts were concentrated in vacuum until the organic solvent evaporated, and 50 liters of 30% NaOH methanol solution was added, and stirred and saponified at 60°C for 10 hours;

[...

Embodiment 3

[0061] Using capsicum as raw material, prepare zeaxanthin according to the following process:

[0062] Freeze-dry peppers, grind them into powder, pass through a 100-mesh sieve, take 1000 grams of powder under the sieve, add petroleum ether and dichloromethane mixed solvent (volume ratio 1:1) 100 ml according to the ratio of pepper mass:solvent volume=1g:100ml liter, stirred and extracted at 80°C for 1 hour, and left to settle and separate after the extraction; the extract and filter residue were obtained;

[0063] Add 100 liters of mixed solvent of petroleum ether and dichloromethane to the filter residue again for the second extraction; stir and extract at 80°C for 1 hour; after the extraction is completed, let it stand for precipitation and separation; obtain the extract and filter residue;

[0064] The extraction was repeated 3 times; the combined extracts were concentrated in vacuo until the organic solvent evaporated, and 10 liters of 50% KOH ethanol solution was added, ...

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Abstract

The present invention provides a method for manufacturing nature zeaxanthin by means of in-situ concentration. Specifically, the method comprises: preparing nature zeaxanthin from a plant by using extraction and saponification , performing in-situ concentration of the zeaxanthin by using a solid adsorbent, and performing drying to obtain high-purity nature zeaxanthin. By means of the method in which in-situ concentration of the zeaxanthin is performed by using a solid adsorbent, the present invention can greatly reduce the amount of water used and an amount of an organic solvent used, the present invention needs a simple process, has a high efficiency, is easy to expand in industry, and can be used in the fields of food, health care food, medicines, and cosmetics and the like, and has good industrial application prospect.

Description

technical field [0001] The present invention relates to a method for extracting natural zeaxanthin, specifically a method for extracting and preparing zeaxanthin from vegetables and fruits by an in-situ enrichment method. The preparation method for zeaxanthin of the present invention has simple process, high efficiency, and solvent It has the characteristics of less usage and high purity of zeaxanthin. The prepared natural zeaxanthin can be used in the fields of food, health food, medicine, cosmetics and the like. Background technique [0002] Zeaxanthin (3,3'-dihydroxy-β-carotene, C 40 h 56 o 2 ), also known as zeaxanthin, is a carotenoid xanthin with a hydroxyl group. [0003] [0004] Molecular structure of formula 1 zeaxanthin and lutein [0005] Zeaxanthin has two chiral carbons at 3 and 3', corresponding to four isomers, namely (3R,3'S)-, (3S,3'R)-, (3R,3'R) -,(3S,3'S)-Zeaxanthin. Due to the symmetry of the molecular structure of zeaxanthin, (3R,3’S)-, (3S,3’...

Claims

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Application Information

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IPC IPC(8): C07C403/24C09B61/00
CPCC07C403/24C07C2601/16C09B61/00
Inventor 邹汉法靳艳张宇
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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