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Method for extracting rice bran oil by using ionic liquid and supercritical carbon dioxide (CO2)

An ionic liquid, supercritical technology, applied in the production of fat oil/fat, fat production, etc., can solve the problem of reducing the efficiency of the extraction process, and achieve the effect of simple process flow, simple operation and short cycle.

Inactive Publication Date: 2012-06-27
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this extraction method, due to the neglect of the cellulose shell of rice bran cells, the appropriate process is not adopted to treat it, which greatly reduces the efficiency of the extraction process; on the other hand, the various biological activities inside rice bran cells Enzymes have many adverse effects on the extraction and processing of rice bran oil, and none of the existing extraction methods have done any treatment on it

Method used

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  • Method for extracting rice bran oil by using ionic liquid and supercritical carbon dioxide (CO2)
  • Method for extracting rice bran oil by using ionic liquid and supercritical carbon dioxide (CO2)
  • Method for extracting rice bran oil by using ionic liquid and supercritical carbon dioxide (CO2)

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Embodiment 1

[0025] An ionic liquid-supercritical CO 2 The method for extracting rice bran oil, the steps are:

[0026] A. Take 300g of rice bran with a particle size of 40 mesh, add 60-90ml of ionic liquid BmimC1 under the condition of 800W power microwave heating, soak for 120s, wash twice with water, recover the ionic liquid, and dry the rice bran;

[0027] B. Put the rice bran obtained in the previous step into supercritical CO 2 In the extractor of the fluid extraction-rectification integrated equipment, tighten the pressure ring seal and open the CO 2 Steel cylinder, the gas is purified by the purifier and enters the condenser for liquefaction, then pressurized by the plunger pump and purified by the purifier for the second time, and then enters the bottom of the extractor through the pipeline, the extraction temperature is controlled at 39-55°C, and the extraction pressure is 20-35Mpa , CO 2 The fluid enters the material layer in the charging cylinder through the metal distributi...

Embodiment 2

[0029] An ionic liquid-supercritical CO 2 The method for extracting rice bran oil, the steps are:

[0030] A. Take 300g of rice bran with a particle size of 40 mesh, add 60ml of ionic liquid BmimC1 under the condition of 800W power microwave heating, soak for 120s, wash twice with water, recover the ionic liquid, and dry the rice bran;

[0031] B. Put the rice bran obtained in the previous step into supercritical CO 2 In the extractor of the fluid extraction-rectification integrated equipment, tighten the pressure ring seal and open the CO 2 The steel cylinder, the gas is purified by the purifier and enters the condenser for liquefaction, then pressurized by the plunger pump and purified by the purifier for the second time, and then enters the bottom of the extractor through the pipeline. The extraction temperature is controlled at 45°C, the extraction pressure is 30Mpa, C0 2The fluid enters the material layer in the charging cylinder through the metal distribution plate for...

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Abstract

The invention discloses a method for extracting rice bran oil by using ionic liquid and supercritical carbon dioxide (CO2). The method comprises the following steps of: A, under a microwave heating condition, soaking rice bran in the ionic liquid BmimC1, reclaiming the BmimC1 and drying the rice bran, wherein the using amount ratio of the rice bran to the BmimC1 is 10:2-3(g / ml); and B, performingsupercritical extraction, rectification and purification on the rice bran obtained in the step A by using CO2 fluid in supercritical CO2 fluid extraction and rectification integrated equipment to obtain the rice bran oil. The rice bran oil is obtained by preprocessing the rice bran by using the ionic liquid to dissolve cellulose husks of the rice bran, damage the residual cell walls of the rice bran and inhibit the biologic enzyme activity of the rice bran and performing extraction and rectification on the rice bran by using the supercritical CO2 fluid extraction and rectification integrated equipment.

Description

technical field [0001] The present invention relates to a kind of extraction method of natural vegetable oil, especially a kind of ionic liquid infiltration treatment and supercritical CO 2 A method for extracting rice bran oil from rice bran by combining fluid extraction and rectification technology. Background technique [0002] Rice bran oil is a vegetable oil composed of fatty acids such as palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid and a small amount of vitamin E. Its fatty acid composition is relatively balanced, and it also contains complex lipids, phospholipids, tocotrienols, Dozens of natural bioactive ingredients such as squalene, phytosterols, oryzanol, etc., are unique healthy edible oils; in addition, it also has the effects of expelling wind, relieving itching, astringent and beautifying. [0003] At present, the extraction methods of rice bran oil mainly include the earlier folk soil method and the later developed solvent extractio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B1/10C11B1/04C11B1/00
Inventor 魏福祥李世超刘宝友
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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