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Method for preparing rice bran oil from rice bran

A rice bran oil and rice bran technology, which is applied in the field of developing functional edible rice bran oil and preparing rice bran oil, can solve the problems of low oil yield and solvent residue, and achieve the effects of reducing activity, improving stability, and reducing production speed

Inactive Publication Date: 2007-03-28
南京远望富硒农产品有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pressing method is a traditional production method. Its advantages are simple production process and low investment. The disadvantage is that the oil yield is low, generally about 10%. The solvent extraction method is a common method for modern edible oil production. The advantage of this method is that the yield The oil rate is relatively high, generally around 20, and the disadvantage is that there are solvent residues in the finished oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Microwave pretreatment of common rice bran

[0027] Weigh 100 grams of fresh common rice bran, place it in a microwave oven, process the rice bran under the conditions of power 800W, time 90s, and material layer thickness 20mm, and label it in a plastic bag after processing. The moisture content of the treated rice bran was 6.4%, and the lipase activity was 0.1 mL lye / g sample.

[0028] 2. Supercritical CO 2 Extracted Ordinary Rice Bran Oil

[0029] (1) Weigh 100 grams of microwave-treated common rice bran and put it into supercritical CO 2 Extraction tank, close the extraction tank;

[0030] (2) Supercritical carbon dioxide extraction process parameters: pressure 45MPa, temperature 35°C, CO 2 The flow rate is 30L / h, and the pressure and flow rate reach the predetermined value by adjusting the opening degree of the throttle valve and the speed of the carbon dioxide high-pressure pump;

[0031] (3) After reaching the set extraction time of 1 h, the extract was co...

Embodiment 2

[0033] 1. Microwave pretreatment of selenium-enriched rice bran

[0034] Weigh 100 grams of fresh selenium-enriched rice bran (purchased from Nanjing Yuanwang Selenium-enriched Agricultural Products Co., Ltd.), place it in a microwave oven, and process the rice bran under the conditions of power 800W, time 90s, material layer thickness 60mm, and plastic bag after processing. The water content of the treated rice bran was 7.4%, and the lipase activity was 0.1 mL lye / g sample.

[0035] 2. Supercritical CO 2 Extraction of selenium-enriched rice bran oil

[0036] (1) Weigh 100 grams of microwave-treated rice bran and put it into supercritical CO 2 Extraction tank, close the extraction tank;

[0037] (2) Supercritical carbon dioxide extraction process parameters: pressure 35MPa, temperature 35°C, CO 2 The flow rate is 60L / h, and the pressure and flow rate reach the predetermined value by adjusting the opening degree of the throttle valve and the speed of the carbon dioxide high...

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PUM

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Abstract

The invention relates to rice bran oil preparing method. It includes the following steps: processing the rice bran by micro wave with 800W power, 60s, 60mm height of layer, 7.4% humidity after processing; using supercritical carbon dioxide to extract rice bran oil at 25-60 degree centigrade, 10MPa-40MPa pressure, 15L / h-90L / h rate of CO2 flow for 30-150min. The prepared rice bran oil will not be rancidity and resolved by lipase to increase its stability. The product is easy to store. The rice bran oil yield is 20-22%.

Description

1. Technical field [0001] The invention relates to a method for preparing rice bran oil from rice bran, belongs to the technical field of grain and oil deep processing, and is used for developing functional edible rice bran oil. 2. Background technology [0002] Rice bran not only has a high content of fat and protein, but also contains other anti-cancer and health-promoting functional substances, such as dietary fiber, vitamins, oryzanol, minerals, phytic acid, inositol, etc. value-added resources. [0003] In addition to the large amount of nutrients brought by rice bran oil, the fatty acid composition of rice bran oil itself is relatively reasonable. Generally, rice bran oil contains 38% linoleic acid and 42% oleic acid, and the ratio is about 1:1.1. From a nutritional point of view, the ratio of oleic acid to linoleic acid should be about 1:1, and such oils have high nutritional value. Rice bran oil is rich in linoleic acid, which can prevent skin diseases, high blood ...

Claims

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Application Information

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IPC IPC(8): C11B1/10
Inventor 胡秋辉尹正丰辛志宏姚梅桑胡兴锁鞠兴荣
Owner 南京远望富硒农产品有限责任公司
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