Preparation method of high-oryzanol rice bran oil

A technology of rice bran oil and oryzanol, which is applied in the fields of fat oil/fat refining, fat oil/fat production, fat production, etc., can solve the problems of difficult short-term oil production, poor quality of rice bran oil, and speed up the quality of rice bran oil, etc., to achieve Increase antioxidant capacity, reduce fat decomposition, and accelerate the effect of molecular movement

Inactive Publication Date: 2015-11-04
BENGBU QIONGHUAI GRAIN & OIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pests and microorganisms mixed in rice bran will also accelerate the change of oil quality in rice bran, which makes the quality of rice bran oil produced from rice bran as a raw material deteriorate.
However, the rice bran resources in my country are scattered and widely distributed, and it is difficult to gather them together for oil production in a short period of time.

Method used

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  • Preparation method of high-oryzanol rice bran oil
  • Preparation method of high-oryzanol rice bran oil
  • Preparation method of high-oryzanol rice bran oil

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Experimental program
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Effect test

preparation example Construction

[0020] refer to figure 1 , the preparation method of a kind of high oryzanol rice bran oil that the present invention proposes, comprises the steps:

[0021] S1. Fresh-keeping rice bran: heat the rice bran in a microwave oven with a power of 750-850W for 120-180s, cool to room temperature, pulverize, spray 0.02-0.04wt% vitamin E based on the weight of rice bran, and mix well to obtain fresh-keeping rice bran ;

[0022] S2. Extraction of crude rice bran oil: Add the fresh-keeping rice bran obtained in S1 into the composite solvent, raise the temperature in a water bath to 35-45°C, and ultrasonicate for 60-70min at an ultrasonic power of 300-500W, suction filter, and rotary evaporate to obtain Rice bran crude oil, wherein the composite solvent is composed of isopropanol and No. 6 solvent;

[0023] S3. Refining: degumming, dewaxing and decolorizing the crude rice bran oil obtained in S2 to obtain decolorized rice bran oil, raising the temperature to 35-45°C, adding 5-6wt% dieth...

Embodiment 1

[0026] A preparation method of high oryzanol rice bran oil, comprising the steps of:

[0027] S1. Fresh-keeping rice bran: heat 20wt% rice bran in a microwave oven with a power of 750W for 180s, cool to room temperature, crush to 100 mesh, spray 0.02wt% vitamin E based on the weight of rice bran, and mix well to keep fresh The final rice bran, wherein the thickness of the rice bran placed in the microwave oven is 1cm;

[0028] S2. Extraction of crude rice bran oil: Add the fresh-keeping rice bran obtained in S1 into a composite solvent composed of isopropanol and No. 6 solvent, raise the temperature in a water bath to 45° C., and perform ultrasonication for 60 minutes at an ultrasonic power of 300 W, and suction filtration. The crude rice bran oil is obtained by rotary evaporation, wherein the weight-volume ratio of fresh-keeping rice bran to composite solvent is (g / ml) 1:6, and the volume ratio of isopropanol to No. 6 solvent is 0.9:1.1;

[0029] S3. Refining: degumming, dew...

Embodiment 2

[0031] A preparation method of high oryzanol rice bran oil, comprising the steps of:

[0032] S1. Fresh-keeping rice bran: heat the rice bran with a moisture content of 24wt% in a microwave oven with a power of 850W for 120s, cool to room temperature, crush to 50 mesh, spray 0.04wt% vitamin E based on the weight of rice bran, and mix well to obtain freshness The final rice bran, wherein the thickness of the rice bran placed in the microwave oven is 3cm;

[0033] S2. Extraction of crude rice bran oil: Add the fresh-keeping rice bran obtained in S1 into a composite solvent composed of isopropanol and No. 6 solvent, raise the temperature in a water bath to 35° C., and perform ultrasonication for 70 minutes at an ultrasonic power of 500 W, and suction filtration. Rotary evaporation to obtain crude rice bran oil, wherein the weight-to-volume ratio of fresh-keeping rice bran to composite solvent is (g / ml) 1:4, and the volume ratio of isopropanol to No. 6 solvent is 1.1:0.9;

[0034...

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Abstract

The invention discloses a preparation method of high-oryzanol rice bran oil. The method comprises the following steps: 1, keeping freshness of rice bran: placing rice bran in a 750-850W microwave oven, heating for 120-180s, cooling to room temperature, crushing, sprinkling vitamin E accounting for 0.02-0.04wt% of the weight of the rice bran, and uniformly mixing to obtain freshness kept rice bran; 2, extracting crude rice bran oil: adding the freshness kept rice bran obtained in step 1 into a composite solvent, carrying out water bath heating to 35-45DEG C, carrying out ultrasonic treatment under an ultrasonic power of 300-500W for 60-70min, carrying out pumping filtration, and carrying out rotary evaporation to obtain the crude rice bran oil, wherein the composite solvent is composed of isopropanol and a solvent No.6; and 3, purifying: degumming the crude rice bran oil obtained in step 2, de-waxing, de-coloring, de-pickling, and deodorizing to obtain the high-oryzanol rice bran oil. The preparation method has the advantages of high quality, high oil extraction rate, high oryzanol content, high removal rate of free aliphatic acid, and simple operation.

Description

technical field [0001] The invention relates to the technical field of oil processing, in particular to a preparation method of high oryzanol rice bran oil. Background technique [0002] Rice bran oil is rich in unsaturated fatty acids, of which the content of oleic acid, linoleic acid and linolenic acid is as high as more than 80%, mainly oleic acid and linoleic acid, refined rice bran oil contains about 38% linoleic acid and about 42% Oleic acid, the ratio of the two is close to 1:1, which meets the best standard of 1:1 ratio of oleic acid and linoleic acid recommended by the International Health Organization. From the perspective of modern nutrition, this ratio of oil has a higher Nutritional value, known as "healthy nutritional oil" abroad [0003] Rice bran oil not only contains unsaturated fatty acids, but also contains some special active ingredients that are not found in other edible vegetable oils, such as oryzanol, tocopherol, squalene, sterols, etc. There will b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/04C11B1/10C11B3/00
Inventor 宋代江方厚凯
Owner BENGBU QIONGHUAI GRAIN & OIL
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