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Method for preparing lutein from marigold oil resin

A technology for oleoresin and lutein, applied in the field of lutein preparation, can solve the problems of complexity, low lutein crystal purity, solvent poisoning preparation process and the like, and achieves the effects of low cost and simple equipment

Pending Publication Date: 2021-08-03
云南福彻生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing lutein from marigold oleoresin, which solves the problems of low purity of lutein crystals prepared in the prior art, toxic solvents used in the preparation process and complicated preparation process

Method used

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Examples

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specific Embodiment 1

[0025] A method for preparing lutein from marigold oleoresin, comprising the following steps: a. putting marigold oleoresin into alcohol liquid, and adding an emulsifier to the alcohol liquid, mixing uniformly to form a mixed liquid x, every 1ml The mass of marigold oleoresin put into the alcohol solution is 1-5g, and the amount of emulsifier added to each 1ml of alcohol solution is 0.02-0.05ml; b. Add a concentration of 30%-50% alkali to the mixed solution x at a uniform speed c. After the saponification reaction is over, the saponified product is obtained, and then the saponified product is washed with different concentrations of alcoholic aqueous solutions three times, and finally crystal y is obtained; d. The obtained crystal y is put into supercritical carbon dioxide equipment for refining , the entraining agent is an alcohol substance, and the crystal z is obtained after refining; e. The crystal z is crushed at low temperature, and then dried in a vacuum at 20-40°C.

[0...

specific Embodiment 2

[0028] This embodiment is to further illustrate step a on the basis of specific example 1. The alcohol in the alcohol liquid in the above step a is a C1-C4 lower alcohol. In step a, marigold oleoresin is put into the alcohol liquid During the mixing process, the temperature was maintained at 45-85°C. The choice of lower alcohols containing 1-4 carbons is mainly due to the easy availability of C1-C4 lower alcohols, environmental protection and low toxicity.

specific Embodiment 3

[0030] This embodiment further illustrates the lye in step b on the basis of specific example 1, the amount of lye added in the above step b is determined according to the amount of marigold oleoresin added in step a , every time 1g of marigold oleoresin is added, 0.2-0.8ml of lye is added, and the lye is an aqueous solution of alkali metal hydroxide, and the temperature in the saponification reaction process is controlled at 45-85°C. Check whether the saponification reaction is over.

[0031] For every 1g of marigold oleoresin, 0.2-0.8g of lye is added. This is based on the amount of lutein ester in marigold oleoresin to determine the amount of lye added. Adding too little will prolong the saponification time. Too many will bring unnecessary waste. The alkali metal hydroxide is chosen because the alkali metal hydroxide is easy to get and the price is cheap. The reason for controlling the temperature at 45-85°C is because if the temperature is lower than 45°C, the saponificati...

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PUM

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Abstract

The invention discloses a method for preparing lutein from marigold oil resin, the method comprises the following steps: a, putting the marigold oil resin into an alcohol solution, adding an emulsifier into the alcohol solution, uniformly mixing to form a mixed solution x, putting 1-5g of the marigold oil resin into each 1ml of the alcohol solution, and putting 0.02-0.05 ml of the emulsifier into each 1ml of the alcohol solution; b, adding alkali liquor with the concentration of 30%-50% into the mixed liquor x at a constant speed to carry out saponification reaction; c, after the saponification reaction is finished, obtaining a saponified substance, then washing the saponified substance with alcohol aqueous solutions with different concentrations for three times, and finally obtaining a crystal y; d, putting the obtained crystal y into supercritical carbon dioxide equipment to be refined, wherein an entrainer is an alcohol substance, and obtaining a crystal z after refining; and e, crushing the crystal z at low temperature, and drying in vacuum at 20-40 DEG C. The problems that the lutein crystal prepared in the prior art is low in purity, the solvent used in the preparation process is toxic and harmful, and the preparation process is complex are solved.

Description

technical field [0001] The invention relates to the field of lutein extraction, in particular to a method for preparing lutein from marigold oleoresin. Background technique [0002] Lutein is a kind of carotenoid, it can not only be used in poultry feed to improve the appearance color and internal quality of poultry products, but also can be used for food coloring, the most important thing is to prevent vision caused by age-related macular degeneration Fall with cataracts. In 1995, the U.S. FDA has approved lutein as a food supplement for food and beverages, and the "List of New Food Additives and Food Spices" issued by the Ministry of Health of my country in 2007 also clearly stipulates that lutein is used as a coloring agent and Nutritional supplements can be used in food. [0003] Lutein is high in green leafy vegetables such as kale and spinach, as well as flowers such as marigolds, so marigolds are the main raw material for extracting lutein. There are also some met...

Claims

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Application Information

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IPC IPC(8): C07C403/24C09B61/00C09B67/54
CPCC07C403/24C09B61/00C09B67/0096C07C2601/16Y02P20/54
Inventor 雒铭伟倪崛高波蒋德生杨俊文
Owner 云南福彻生物科技有限公司
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