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Squeezing and puffing pretreatment method for preparing low acid value-high quality rice bran oil

A technology of extrusion and pretreatment, which is applied in the direction of fat oil/fat production, fat oil/fat refining, fat production, etc. It can solve the problems of cumbersome refining process, high oil yield, and potential safety hazards of organic solvents, etc., so as to improve the refining rate , Grease damage is small, no solvent residue effect

Inactive Publication Date: 2017-01-18
ANHUI PROVINCE YINGSHANG COUNTY SANJIN GRAINS ANDOILS CO LTD
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  • Application Information

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Problems solved by technology

The organic solvent leaching method has a high oil yield, but the use of organic solvents has potential safety hazards, and the refining process is too cumbersome

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] An extrusion puffing pretreatment method prepares low-acid value-high-quality rice bran oil, which is prepared from the following raw materials in parts by weight (g):

[0024] Rice bran 56, alkaline protease 8, activated clay 7, activated carbon 6, appropriate amount of distilled water.

[0025] A kind of extrusion puffing pretreatment method prepares low acid value-high-quality rice bran oil, is characterized in that, carries out according to the following steps:

[0026] a. Pass the rice bran through a 50-mesh sieve, add water to adjust the moisture content to 20%, put it into a heat-resistant plate, spread it to a thickness of 5cm and spread it evenly, put it in a microwave oven, heat it at 800-900W for 180s, take it out, and cool it to room temperature ,spare;

[0027] b. Place the material obtained in a in supercritical CO 2 In the extraction device, at 50-60°C, CO 2 Extract for 2 hours at a flow rate of 50-60kg / h and a pressure of 40-50MPa;

[0028] c. Place ...

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Abstract

The invention discloses a squeezing and puffing pretreatment method for preparing low acid value-high quality rice bran oil. The method is characterized by being prepared from the materials rice bran, alkaline protease, activated clay, activated carbon, and distilled water. The present invention adopts the aqueous enzymatic method to extract the oil fat from rice bran, the aqueous enzymatic method is safe in oil-extracting technique, is environmental friendly and green, the obtained plant oil is pollutless; adding into the activated clay and the activated carbon, the rice bran oil is decolorized; the supercritical CO2 extraction technique has the advantages of being high in extraction rate, good in choice, simple in process, no residue in solvent agent; the technique can simplify the refining process for rice bran oil, increase the refining rate of rice bran oil; the supercritical CO2 extraction technique adopts the molecular distillation technology to de-acidificate the rice bran oil; the molecular distillation technology is an oil deacidification technology, it has the advantages of being low in energy consumption, with little damage to oil fat, and being clean; by using the present invention, low acid value-high quality rice bran oil is obtained.

Description

technical field [0001] The invention relates to a method for preparing rice bran oil, in particular to an extrusion pretreatment method for preparing low acid value and high-quality rice bran oil. Background technique [0002] my country is the largest rice producer in the world. Rice bran is an important by-product in the rice processing process, and rice bran has a high oil content and is an important oil source. As a new type of natural vegetable oil, rice bran oil contains a variety of special active ingredients that are beneficial to health. Rice bran oil has the functions of improving immunity, lowering cholesterol, regulating blood lipids, preventing arteriosclerosis, etc., and has high nutritional value. Rice bran oil is increasingly valued and favored by consumers due to its rich nutritional value and health care functions. [0003] Xie Ying used fresh rice bran as raw material in her master's thesis "Research on the Production and Refining Process of Rice Bran Oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/04C11B1/10C11B3/10C11B3/12
CPCC11B1/025C11B1/04C11B1/104C11B3/001
Inventor 金荣珍金永王方甫
Owner ANHUI PROVINCE YINGSHANG COUNTY SANJIN GRAINS ANDOILS CO LTD
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