Refining technology of rice bran oil

A technology for rice bran oil and rice bran crude oil, which is applied in the direction of oil/fat refining, fat production, etc., can solve the problems such as easy loss of oryzanol in crude rice bran oil, and achieve the effects of good oxidation stability, reduction of environmental pollution and improvement of refining rate.

Inactive Publication Date: 2015-12-09
崇州市白头甘泉工业油脂厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention provides a rice bran oil refining process to improve the problem that the oryzanol in the rice bran crude oil is easily lost by using the existing refining process to process rice bran crude oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Present embodiment one provides a kind of rice bran oil refining process, comprises the following steps:

[0018] a. Pretreatment: filter the crude rice bran oil;

[0019] b. Degumming: Put the crude rice bran oil into the reactor, preheat it to 50°C, add water at 50°C, the amount of water added is 20% of the oil weight, and then add phospholipase for enzymolysis for 2 hours. The amount of phospholipase added is 0.02% of the oil weight, and then stirred for 20min at a stirring speed of 40rmp; then adding a citric acid solution with a mass concentration of 45% and a sodium hydroxide solution with a mass concentration of 4%, the addition of the citric acid solution was 0.1% of the oil weight %, the addition of sodium hydroxide solution is 1% of the oil weight, and mix well;

[0020] c. Deacidification: add lye with a mass concentration of 17%, then pass the oil into the first packed tower, the temperature condition is 120°C, the pressure is -0.95MPa, and treat for 60min;...

Embodiment 2

[0028] Present embodiment two provides a kind of rice bran oil refining process, comprises the following steps:

[0029] a. Pretreatment: filter the crude rice bran oil;

[0030] b. Degumming: Put the crude rice bran oil into the reaction kettle, preheat it to 40°C, add water at 40°C, the amount of water added is 20% of the oil weight, and then add phospholipase for enzymatic hydrolysis for 0.5h, the amount of phospholipase added 0.01% of the oil weight, and then stirred for 10min at a stirring speed of 20rmp; then adding a citric acid solution with a mass concentration of 45% and a sodium hydroxide solution with a mass concentration of 4%, the addition of the citric acid solution was 1% of the oil weight 0.1%, the amount of sodium hydroxide solution is 1% of the oil weight, mix well;

[0031] c. Deacidification: add lye with a mass concentration of 12%, and then pass the oil into the first packed tower at a temperature of 60°C and a pressure of -0.8MPa for 30 minutes; then, ...

Embodiment 3

[0037] Present embodiment three provides a kind of rice bran oil refining process, comprises the following steps:

[0038] a. Pretreatment: filter the crude rice bran oil;

[0039] b. Degumming: Put the crude rice bran oil into the reaction kettle, preheat it to 50°C, add water at 45°C, the amount of water added is 20% of the oil weight, and then add phospholipase for enzymatic hydrolysis for 1 hour. The amount of phospholipase added is 0.01% of the oil weight, and then stirred for 20min at a stirring speed of 30rmp; then adding a citric acid solution with a mass concentration of 45% and a sodium hydroxide solution with a mass concentration of 4%, the addition of the citric acid solution was 0.1% of the oil weight %, the addition of sodium hydroxide solution is 1% of the oil weight, and mix well;

[0040] c. Deacidification: add lye with a mass concentration of 15%, then pass the oil into the first packed tower, the temperature condition is 100°C, the pressure is -0.9MPa, and...

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Abstract

The invention provides a refining technology of rice bran oil, and relates to the technical field of grease processing. The refining technology comprises six steps: pretreatment, degumming, deacidification, decoloring, deodorizing, and de-waxing. The provided refining technology can reduce the loss of oryzanol and obtain a high oryzanol retention rate. Moreover, the prepared oil product has good oxidation stability.

Description

technical field [0001] The invention relates to the technical field of oil processing, in particular to a rice bran oil refining process. Background technique [0002] The content of natural antioxidant oryzanol (a mixture of ferulic acid esters composed of triterpene alcohols and phytosterols) in crude rice bran oil is usually about 2%. It is precisely because of the presence of oryzanol that the processed rice bran oil has the ability to prevent lipid oxidation , anti-hyperlipidemia, inhibition of autosynthesis of cholesterol, and promotion of growth and development. Crude rice bran oil is usually prepared by pressing or leaching, and undergoes refining processes such as degumming, deacidification, decolorization, deodorization, and dewaxing. However, the existing refining operations have a greater impact on oryzanol, which can easily lead to the loss of oryzanol. Contents of the invention [0003] In view of this, the present invention provides a rice bran oil refining...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00C11B3/06C11B3/10C11B3/14
Inventor 黄何
Owner 崇州市白头甘泉工业油脂厂
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