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Process for extracting coix seed oil by using supercritical CO2 extraction method

A coix seed oil and carbon dioxide technology, applied in the direction of fat oil/fat production, fat production, etc., can solve the problem of low yield of coix seed oil and achieve high yield effect

Inactive Publication Date: 2004-06-09
SHANGHAI HI TECH UNITED BIO TECHCAL RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to provide a method for extracting coix seed oil with supercritical carbon dioxide, which overcomes the defect of low yield of coix seed oil in the prior art

Method used

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  • Process for extracting coix seed oil by using supercritical CO2 extraction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put 2 kg of coix seed crushed to 60 mesh and 0.6 kg of 70 wt% ethanol aqueous solution into extractor 1, control the extraction temperature to 42°C, and the extraction pressure to 20Mpa. The temperature of the second desorption kettle 3 is 40°C, the pressure is 6Mpa, and the flow rate of carbon dioxide is 200kg / h. After 4 hours of extraction, the desorption extract, i.e. coix seed oil, is taken out from the first desorption kettle 2 and the second desorption kettle 3, The yield was 8.18%.

Embodiment 2

[0030] Put 5 kg of coix seed crushed to 50 mesh into the extractor, control the extraction temperature to 40°C, the pressure to 8MPa, the first analysis temperature to 44°C, the second analysis temperature to 41°C, and CO 2 Gas, and pump into entrainer ethanol, the flow rate of ethanol is 1500 g / h, the first analysis pressure is 9MPa, the second analysis pressure is 5MPa, after extracting for 3.3 hours, take out extraction from the first analysis kettle and the second analysis kettle The product is coix seed oil with a yield of 7.22%.

Embodiment 3

[0032] GC-MS Analysis of Fatty Acid Content in Coix Seed Oil

[0033] 1. Preparation of test samples:

[0034] Put 0.1 g of coix seed oil extracted with carbon dioxide into a container, add 1 ml of methanol and 1 ml of 0.8 mol / L KOH-methanol, shake gently for 5 minutes, add water to 10 ml, and take the supernatant for GC-MS analysis.

[0035] 2. Test conditions:

[0036] The GC conditions are as follows: chromatographic column FFAP 25mm×0.2mm quartz capillary column, column temperature 150°C, 10°C / min, injection port temperature 250°C, column front pressure 50kPa.

[0037] MS conditions are as follows: EI ion source, ion energy 70eV, electron multiplier high voltage 1900V, mass scan 200°C amu.

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Abstract

The present invention discloses a method for extracting coix seed oil by using supercritical CO2 extraction process, and is characterized by that it makes the CO2 being in supercritical state by matched with entraining agent to implement extraction of coix seed, and its yield of coix seed oil can be up to above 8.18%. Said coix seed oil contains lots of unsaturated fatty acid and protein, can be used for preparing the medicine for curing cancer, making immune regulation, reducing blood fat, relieving inflammation and relieving cough, at the same time can be used for developing various function health-care foods.

Description

technical field [0001] The invention relates to a method for coix seed oil, in particular to a method for extracting coix seed oil with supercritical carbon dioxide. Background technique [0002] Coix seed is the dry mature seed kernel of Gramineae plant Coix lacrymajoib L.var.mayuen (Roman) Stapf. Coix seed oil contains a large amount of unsaturated fatty acids, which is clinically used for the treatment of cancer. The traditional method of extracting coix seed oil is organic solvent leaching, and the solvent used is generally petroleum ether or ether. There are many defects in the operation of the method, and a large amount of organic solvent is required, which is generally 100 to 150 times that of the extracted material. The extract contains more impurities, which not only brings certain difficulties to the subsequent separation and collection, but also often has certain Most of the organic solvents remain in the extract, which limits the application of the extracted pr...

Claims

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Application Information

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IPC IPC(8): C11B1/10
Inventor 方中华
Owner SHANGHAI HI TECH UNITED BIO TECHCAL RES
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