Refining method of rice bran oil

A technology of rice bran oil and crude rice bran oil, which is applied in the fields of fat oil/fat refining, edible oil/fat, fat production, etc. It can solve the problems of high cost of rice bran oil refining and low oil yield, achieve mild action conditions and improve quality Effect

Active Publication Date: 2017-12-08
ZOUPING JIANYUAN GREASE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high cost of refining rice bran oil and the low oil yield, rice bran oil can only be used in large quantities to make soap, lubricating oil, and fatty acids.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The refining method of rice bran oil comprises the following steps:

[0036] Degumming: Put the crude rice bran oil into the reactor, preheat it to 45°C, then add water at 45°C, the weight ratio of the above crude rice bran oil to water is 1:0.4; add amylase to hydrolyze for 0.6h; the above α-starch The amount of enzyme added accounts for 0.02% of the weight of rice bran crude oil; the acid value of rice bran crude oil is 7.6KOHmg / g;

[0037] Then add phospholipase for enzymatic hydrolysis for 0.6h; the amount of the above-mentioned α-amylase accounts for 0.015% of the weight of rice bran crude oil;

[0038] Add water at a temperature of 92°C, accounting for 8% of the oil content, stir at a speed of 30rmp for 15 r / min, let it stand for 12 minutes, and then centrifuge. The speed of the above centrifugal separation is 300r / min;

[0039] Deacidification: take out the centrifuged upper layer liquid, add glycerin, the above-mentioned glycerin accounts for 0.3% of the weight...

Embodiment 2

[0045] The refining method of rice bran oil comprises the following steps:

[0046] Degumming: Put the crude rice bran oil into the reactor, preheat it to 40°C, then add water at 40°C, the weight ratio of the above crude rice bran oil to water is 1:0.3; add amylase to hydrolyze for 0.5h; the above α-starch The amount of enzyme added accounts for 0.01% of the weight of rice bran crude oil; the acid value of rice bran crude oil is 7.4KOHmg / g;

[0047] Then add phospholipase for enzymolysis for 0.5h; the amount of the above-mentioned α-amylase accounts for 0.01% of the weight of rice bran crude oil;

[0048] Add water with a temperature of 92°C and 8% of the oil content, stir at a speed of 30rmp for 15 r / min, let it stand for 12 minutes, and then centrifuge. The speed of the above centrifugation is 200r / min;

[0049] Deacidification: take out the centrifuged upper layer liquid, add glycerin, the above-mentioned glycerin accounts for 0.2% of the weight of the upper layer liquid, ...

Embodiment 3

[0055] The refining method of rice bran oil comprises the following steps:

[0056] Degumming: Put the crude rice bran oil into the reaction kettle, preheat it to 50°C, then add water at 50°C, the weight ratio of the above crude rice bran oil to water is 1:0.5; add amylase to hydrolyze for 0.8h; The amount of enzyme added accounts for 0.02% of the weight of rice bran crude oil; the acid value of rice bran crude oil is 7.5KOHmg / g;

[0057] Then add phospholipase for enzymolysis for 0.8h; the amount of the above-mentioned α-amylase accounts for 0.015% of the weight of rice bran crude oil;

[0058] Add water at a temperature of 92°C, accounting for 8% of the oil content, stir at a speed of 30rmp for 15 r / min, let it stand for 12 minutes, and then centrifuge. The speed of the above centrifugal separation is 300r / min;

[0059] Deacidification: take out the centrifuged upper layer liquid, add glycerin, the above-mentioned glycerin accounts for 0.3% of the weight of the upper layer ...

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Abstract

The invention belongs to the technical field of oil processing, and in particular relates to a method for refining rice bran oil. The refining method of rice bran oil comprises the following steps: degumming crude rice bran oil by enzymatic method, and then deacidifying and decolorizing by enzymatic method to obtain finished rice bran oil. The beneficial effects of the present invention are that the rice bran oil is refined by the method of the present invention, and some components in the crude bran oil are enzymolyzed by biological enzymes, the quality of the rice bran oil is improved, and the oryzanol and tocopherol in the oil are preserved to the greatest extent content of active substances. The method of the invention has mild action conditions, does not need to process subsequent organic solvents, and does not cause environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of oil processing, and in particular relates to a method for refining rice bran oil. Background technique [0002] Rice bran is a by-product of grain processing, rich in oil, protein, cellulose and vitamins. Rice bran oil contains 16-22%. Rice bran oil contains unsaturated fatty acids, oleic acid, linoleic acid, and is rich in oryzanol. Oryzanol has the effects of reducing platelet aggregation, reducing hepatic cholesterol synthesis and reducing cholesterol absorption. However, for a long time, rice bran has only been used as extensive feed to feed livestock and poultry, so that its nutritional value and resource benefits have not been fully utilized and utilized, resulting in great waste. Experts express their deep regret for this. According to experts in the field of grain, oil and food, since the oil content in rice bran reaches 15%-20%, modern technology is enough to refine rice bran oil from it. Rice...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B3/00C11B3/10A23D9/04
Inventor 王月华王萍王秀华范丽君
Owner ZOUPING JIANYUAN GREASE
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