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Method for extracting and separating coixenolide and coix seed oil step-by-step by using supercritical CO2

A technology of coix seed oil and coix seed ester, applied in chemical instruments and methods, carboxylate preparation, fat oil/fat production, etc.

Active Publication Date: 2010-10-20
福建仙芝楼生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, there is no research on the use of supercritical CO 2 The report that the extracted coix seed oil and coixene ester are separated online, the present invention uses supercritical CO 2 Step-by-step extraction and step-by-step collection method to achieve the purpose of extraction and on-line separation of coixenolide and coix seed oil

Method used

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  • Method for extracting and separating coixenolide and coix seed oil step-by-step by using supercritical CO2
  • Method for extracting and separating coixenolide and coix seed oil step-by-step by using supercritical CO2
  • Method for extracting and separating coixenolide and coix seed oil step-by-step by using supercritical CO2

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Experimental program
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Embodiment 1

[0018] A supercritical CO 2 A method for step-by-step extraction and separation of coixenolide and coix seed oil, comprising the following steps:

[0019] 1) Grinding and granulating: Grind the coix seed that has been shelled and removed impurities into a fine powder of 60-200 mesh, pour it into a blender, add pure water accounting for 40%-80% of the raw material weight while stirring, and use 20 mesh Sieve for wet granulation, dry at 55-60°C, and control the moisture within 5%;

[0020] 2) Grain sifting: the dried coix seed granules are sieved with a 10--20 mesh sieve, then the fine powder is sieved out with a 50 mesh sieve, and the sieved fine powder is returned to re-granulate;

[0021] 3) Supercritical CO 2 Step-by-step extraction and segmented collection: carbon dioxide cylinder 1, carbon dioxide storage tank 2, extraction kettle 3, and separation kettle 4 are connected in sequence, and there is a pipeline 6 above it for CO 2 coix seed oil and coix seed ester, carbon d...

example 1

[0023]

Embodiment 2

[0025]Put 7.00kg of crushed, granulated and sieved Coix seed powder, with a water content of 3.3%, into a 24L extraction kettle, the extraction temperature is 60°C, the extraction pressure is increased step by step from 15, 20, 25, 30MPa, and the pressure of the separation kettle is 6MPa Temperature 45°C, CO 2 The flow rate is 100L / hr, and the extraction time is 0.5hr / segment to collect. The specific process and results are shown in Table 2. Other unmentioned parts are the same as the above example.

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Abstract

The invention relates to a deep processing technology of coix seeds, in particular to a method for preparing coixenolide and coix seed oil on line by utilizing supercritical CO2 step-by-step extraction and segmental collection. The method for preparing the coixenolide and the coix seed oil on line by utilizing the supercritical CO2 step-by-step extraction and segmental collection comprises the following steps of: crushing and granulating; sieving integral granules; carrying out the supercritical CO2 step-by-step extraction and segmental collection; placing coix seed powder granules into a material basket of a 24 L extraction kettle, and introducing supercritical CO2 into the 24 L extraction kettle, wherein pressure is stepwise increased between 10 MPa and 30 MPa, and extraction temperate is 40-60 DEG C; enabling the coixenolide and the coix seed oil to enter a separation kettle by being depressurized through a valve from the 24 L extraction kettle, wherein the pressure inside the separation kettle is between 5 MPa and 7 MPa, the temperature is 40-60 DEG C, and CO2 flow rate is 100-130 L / hour; and segmentally collecting according to extraction time at 0.5-1.0 hour / segment and the total time of 5-5.5 hours. The invention can realize the on-line separation of water contained in the coix seed powder granules, the coixenolide, the coix seed oil and other impurities by adopting the step-by-step pressurization and segmental collection process and overcomes the defect that the conventional extraction method needs to further separate an extractive by adopting other separation technologies.

Description

technical field [0001] The present invention relates to the deep processing technology of coix seed, especially refers to the utilization of supercritical CO 2 The step-by-step extraction and section-collection method obtains the online preparation method of coixenolide and coix seed oil. Background technique [0002] Coix seed is the seed of Coix Lachryma johi L., a grass plant. It is a functional food raw material with the same source of food and medicine. appetite. In "Compendium of Materia Medica", it is called a top-grade heart-nourishing medicine. Coix seed contains a wide variety of chemical components. The fat-soluble components are mainly coix seed oil and coixene ester, as well as some fat-soluble vitamins. The low and medium polar components include triterpenoids, fatty acids and sterols, and the strong polar components include Polysaccharides, proteins and amino acids and other components. Studies have shown that many of the ingredients have pharmacological a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/58C07C67/58C11B1/10
CPCY02P20/54
Inventor 李晔姚渭溪
Owner 福建仙芝楼生物科技有限公司
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