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Preparation method for high-quality rice bran oil

A rice bran oil, high-quality technology, applied in the direction of fat oil/fat refining, fat oil/fat production, fat production, etc., can solve the problems of accelerating the quality of rice bran oil, deterioration of rice bran oil quality, and difficulty in short-term oil production, etc. Achieve the effects of increasing antioxidant capacity, increasing leaching rate, and accelerating molecular movement

Inactive Publication Date: 2015-11-25
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 for high-quality rice bran oil
  • Preparation method for high-quality rice bran oil

Examples

Experimental program
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preparation example Construction

[0018] refer to figure 1 , a kind of preparation method of high-quality rice bran oil that the present invention proposes, comprises the steps:

[0019] S1. Fresh-keeping rice bran: put the rice bran in an extrusion extruder, heat up to 100-120°C, extrude the diameter of the film hole to be 14-16mm, extrude at a speed of 110-130r / min, cool to room temperature, Spraying 0.03-0.05wt% vitamin E based on the weight of rice bran, and mixing to obtain fresh-keeping rice bran;

[0020] S2. Extraction of crude rice bran oil: Add the fresh-keeping rice bran obtained in S1 into the solvent, raise the temperature in a water bath to 50-60°C, and ultrasonicate for 30-50min at an ultrasonic power of 600-700W, suction filter, and rotary evaporate to obtain rice bran crude oil;

[0021] S3. Refining: heat up the crude rice bran oil obtained in S2 to 25-35°C, add 2-4wt% diethanolamine based on the weight of the crude rice bran oil, stir at a speed of 500-700r / min for 100-120min, and centrifu...

Embodiment 1

[0024] A preparation method of high-quality rice bran oil, comprising the steps of:

[0025] S1. Fresh-keeping rice bran: place the rice bran with a moisture content of 17wt% and 20 meshes in an extrusion extruder, heat up to 120°C, extrude the diameter of the film hole to be 14mm, extrude and expand at a speed of 130r / min, and cool to At room temperature, spray 0.03wt% vitamin E based on the weight of rice bran, and mix to obtain fresh-keeping rice bran;

[0026] S2. Extraction of crude rice bran oil: add the fresh-keeping rice bran obtained in S1 into isopropanol, raise the temperature in a water bath to 50° C., and ultrasonicate for 50 minutes at an ultrasonic power of 700 W, suction filter, and rotary evaporate to obtain crude rice bran oil, wherein , the weight-to-volume ratio of fresh-keeping rice bran to isopropanol is (g / ml) 1:5;

[0027] S3, refining: heat up the rice bran crude oil obtained in S2 to 35°C, add 2wt% diethanolamine based on the weight of rice bran crud...

Embodiment 2

[0029] A preparation method of high-quality rice bran oil, comprising the steps of:

[0030] S1. Fresh-keeping rice bran: place the rice bran with a moisture content of 14wt% and 40 meshes in an extrusion extruder, heat up to 100°C, extrude the diameter of the film hole to be 16mm, extrude and expand at a speed of 110r / min, and cool to At room temperature, spray 0.05wt% vitamin E based on the weight of rice bran, and mix to obtain fresh-keeping rice bran;

[0031] S2. Extraction of crude rice bran oil: Add the fresh-keeping rice bran obtained in S1 into ethanol, heat up to 60°C in a water bath, ultrasonicate for 30 minutes at an ultrasonic power of 600W, suction filter, and rotary evaporate to obtain crude rice bran oil. The weight-to-volume ratio of rice bran and ethanol is (g / ml) 1:7;

[0032]S3, refining: heat up the rice bran crude oil obtained in S2 to 25°C, add 4wt% diethanolamine based on the weight of rice bran crude oil, stir at a speed of 500r / min for 120min, and ce...

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Abstract

The invention discloses a preparation method for high-quality rice bran oil. The method comprises the following steps: S1, rice bran preservation: a step of placing rice bran in an extrusion-expansion machine, carrying out heating to 100 to 120 DEG C, wherein a diameter of an extrusion film hole is 14 to 16 mm, then carrying out extrusion and expansion with a speed of 110 to 130 r / min, carrying out cooling to room temperature, spraying 0.03 to 0.05 wt% of vitamin E with rice bran weight as datum, and carrying out uniform mixing so as to obtain preserved rice bran; S2, crude rice bran oil extraction: a step of adding the preserved rice bran obtained in the S1 into a solvent, carrying out water bath heating to 50 to 60 DEG C, carrying out ultrasonic treatment under an ultrasonic power of 600 to 700 W for 30 to 50 min, then carrying out filtering and rotary evaporation so as to obtain crude rice bran oil; and S3, refining: a step of subjecting the crude rice bran oil obtained in the S2 to degumming, deacidifying, dewaxing, decolorizing and deodorizing so as to obtain the high-quality rice bran oil. The preparation method for the high-quality rice bran oil provided by the invention has the advantages of high oil quality, high oil extraction rate, high free fatty acid removal efficiency and simple operation.

Description

technical field [0001] The invention relates to the technical field of oil processing, in particular to a method for preparing high-quality 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 be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/04C11B1/06C11B1/10C11B3/00
Inventor 宋代江方厚凯
Owner BENGBU QIONGHUAI GRAIN & OIL
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