Processing method for rice bran oil

A processing method and technology of rice bran oil, applied in the direction of fat oil/fat production, fat oil/fat refining, fat production, etc., can solve the problems of incomplete extraction of rice bran oil and high energy consumption of the production process, and achieve good decolorization and degumming effects , light color effect

Inactive Publication Date: 2013-11-27
湖南灯塔米业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, the rice bran oil produced by the solvent extraction method has the characteristics of darker color, and the production process consumes a lot of energy, and the extraction of rice bran oil is not complete.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A processing method of rice bran oil, the rice bran oil product is obtained after the rice bran is extruded, leached, pretreated with mixed rice bran crude oil, degummed, decolorized, dewaxed and physically deacidified in sequence, wherein the extruded process refers to the process of feeding the rice bran oil into an extruder Spray high-pressure steam and high-temperature water to increase the temperature and humidity inside the extruder, so that the powdered rice bran will be polymerized into a porous and air-permeable columnar structure through instantaneous effects of high temperature, high pressure, shearing, friction, and expansion. After puffing, the moisture content of rice bran is relatively high, which can reach about 14%. In the puffing process, the temperature inside the puffing machine is usually controlled at 105-140°C, and the pressure inside the frying chamber is 13MPa. The puffing process of rice bran is generally 10-30s.

[0023] Before the puffing pr...

Embodiment 2

[0034] A processing method of rice bran oil, the finished product of rice bran oil is obtained after the rice bran is expanded, leached, pretreated with mixed rice bran crude oil, degummed, decolorized, dewaxed and physically deacidified successively, wherein the leaching process is: Adding leaching solvent isopropanol to the rice bran, leaching to obtain mixed rice bran crude oil; wherein, the weight ratio of leaching solvent to rice bran is 1.2:1, the temperature of the leaching process is 56°C, and the pH value is 6.5; in the leaching process, the rice bran The particle size control is 50-65 mesh, and the water content is 8%;

[0035] The pretreatment process of mixed rice bran crude oil is as follows: the mixed rice bran crude oil is filtered and then evaporated to recover the solvent, and the impurity content in the filtered rice bran crude oil is controlled below 0.2%;

[0036] The degumming process is as follows: adjust the temperature of the rice bran crude oil after i...

Embodiment 3

[0044] A processing method of rice bran oil, the finished product of rice bran oil is obtained after the rice bran is expanded, leached, pretreated with mixed rice bran crude oil, degummed, decolorized, dewaxed and physically deacidified successively, wherein the leaching process is: Add leaching solvent isopropanol to the rice bran, leaching to obtain mixed rice bran crude oil; wherein, the weight ratio of leaching solvent to rice bran is 1.22:1, the temperature of the leaching process is 58 ℃, and the pH value is 6.8; in this leaching process, the rice bran The particle size control is 60-80 mesh, and the water content is 10%;

[0045] The pretreatment process of mixed rice bran crude oil is as follows: the mixed rice bran crude oil is filtered and then evaporated to recover the solvent, and the impurity content in the filtered rice bran crude oil is controlled below 0.2%;

[0046] The degumming process is as follows: adjust the temperature of the rice bran crude oil after i...

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Abstract

The invention discloses a processing method for rice bran oil. A finished rice bran oil product is obtained by successively subjecting rice bran to puffing, leaching, pretreatment of mixed rice bran crude oil, degumming, decoloring, de-waxing and physical deacidification. In the procedure of leaching, a leaching solvent--isopropanol is added into the rice bran having undergone puffing, and oil yield of the rice bran oil is improved through optimization of the leaching procedure; in the procedure of pretreatment of the mixed rice bran crude oil, the mixed rice bran crude oil is subjected to filtration so as to control impurity content to be less than 0.2%; in the procedure of degumming, the temperature of the rice bran crude oil having undergone removal of impurities is adjusted to 42 to 45 DEG C, 20 to 25% of an aqueous oxalic acid solution is added under stirring, heating is carried out during stirring until the temperature is 62 to 64 DEG C, and the solution is stood for 1 to 2 h so as to obtain oxalic acid degummed oil; and then the oxalic acid degummed oil is subjected to water processing so as to obtain degummed oil. The processing method for the rice bran oil provided by the invention has the advantages of low energy consumption, high oil yield and a good decoloring effect.

Description

technical field [0001] The invention relates to the field of food processing, in particular to a method for processing rice bran oil. Background technique [0002] Rice bran is a by-product of rice processing, with an oil content of 15-22%, and rice bran oil is a high-quality edible oil containing glycolipids, glycoproteins, fatty acids and other lipids, which can promote human growth; , Anti-thermal oxidation and other advantages, known as "healthy oil", "nutritious oil", has a very good market prospect. [0003] There are three main production processes for rice bran oil, one is mechanical pressing, the other is solvent leaching, and the third is supercritical extraction. Among them, the oil yield of solvent leaching is higher than the other two, and it is easy to produce on a large scale, so , strong applicability. However, in the prior art, the rice bran oil produced by the solvent extraction method has the characteristics of darker color, and the production process co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/10C11B3/00C11B3/04
Inventor 龚育冬
Owner 湖南灯塔米业有限公司
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