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Method for preparing astaxanthin from zeaxanthin

A technology of zeaxanthin and astaxanthin, which is applied in the field of functional pigments, can solve the problems of expensive extraction methods, and achieve the effects of easy separation and purification, increased productivity, and easy separation.

Active Publication Date: 2017-06-13
山东天音生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of extracting astaxanthin-producing yeast from algae and shrimp waste is relatively expensive, which is why the method of chemical synthesis is more commonly used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Put zeaxanthin (content 90% 200mg), 70mg of potassium triiodide, 110mg of a mixture of manganese dioxide and sodium periodate into the grinding chamber, fill it with nitrogen, start the cooling device, and start grinding with rod grinding. The grinding medium is silica gel, controlled The temperature of the grinding chamber is -1°C~-2°C. After grinding for 2.5 hours, add 2g of dichloromethane to extract astaxanthin and the remaining zeaxanthin, separate the extract and evaporate the solvent to recover the finished astaxanthin.

Embodiment 2

[0021] Put zeaxanthin (85% zeaxanthin crystal purification content, 200mg), 60mg of iodine element, 100mg of the mixture of manganese dioxide and chloric acid into the grinding chamber, fill with nitrogen, start the cooling device, start the basket grinding, the grinding medium is Silica, control the temperature of the grinding chamber at -3°C~-5°C, add 4g of dichloromethane after grinding for 2.7 hours to extract astaxanthin and the remaining zeaxanthin, separate the extract and evaporate the solvent to recover the finished astaxanthin.

Embodiment 3

[0023] Put zeaxanthin (80% zeaxanthin crystal purification content, 200mg), 80mg iodine element, 100mg mixture of manganese dioxide and bromic acid into the grinding chamber, fill with nitrogen, start the cooling device, start the basket grinding, the grinding medium is Diatomaceous earth, control the temperature of the grinding chamber at -3°C to -5°C, add 4g of dichloromethane after grinding for 2.7 hours to extract astaxanthin and the remaining zeaxanthin, separate the extract and evaporate the solvent to recover the finished astaxanthin.

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PUM

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Abstract

The invention relates to a method for preparing astaxanthin from zeaxanthin and belongs to the technical field of functional pigments. The method is characterized by comprising the following steps: cooling and grinding zeaxanthin, a halogenating agent and an oxidizing agent at the mass ratio of (16-18):(5-10):(10-14); controlling the grinding temperature at -1 DEG C to -10 DEG C while starting to grind; after grinding for 2.7-3.5 hours, adding an organic solvent for extracting astaxanthin and residual zeaxanthin; and separating the extract liquor from an evaporation solvent, and recycling the end product of astaxanthin. The grinding method is used for increasing the productivity; the products can be easily separated and purified; and the problems that the solubility of the zeaxanthin in the organic solvent is low, a large dose of solvents are required, the industrial production is difficult and the reaction side products are more and are difficult to be separated can be solved.

Description

technical field [0001] A method for preparing astaxanthin from zeaxanthin belongs to the technical field of functional pigments. Background technique [0002] Astaxanthin is a pigment with bright red color and strong pigmentation ability. As a functional pigment, fish and poultry can absorb and accumulate astaxanthin better than other carotenoids such as canthaxanthin , Lutein and zeaxanthin are much more effective. Astaxanthin is mainly used in the feed industry, and can be used as a feed additive for abalone, sturgeon, salmon, rainbow trout, red sea bream, crustaceans, ornamental fish, various poultry, and pigs. Its main functions are: antioxidant, elimination The ability of free radicals is stronger than that of β-carotenoids, which can promote the production of antibodies and enhance the immune function of animals. British MAG veterinary experts have pointed out in many years of research that adding 15mg / kg of astaxanthin to red and brown-red dogs can improve hair colo...

Claims

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Application Information

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IPC IPC(8): C07C403/24C09B61/00
CPCC07C403/24C09B61/00
Inventor 李勇刘温来杨国强王晓燕李田田
Owner 山东天音生物科技有限公司