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Technology for refining rice bran oil from rice bran

A technology for rice bran oil and rice bran crude oil, which is applied in the direction of edible oil/fat, fat oil/fat refining, and fat production, can solve the problems of solvent residue, high acid value of pressed oil, large oryzanol loss, etc., and achieves easy control and operation. Simple, quality-enhancing and nutritional benefits

Inactive Publication Date: 2015-11-18
JIANGXI XIHAI GREASE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pressed oil has a high acid value, and the leaching method has problems such as solvent residues, and the rice bran crude oil obtained by the two methods needs to go through steps such as deacidification, degumming, dewaxing, decolorization and deodorization to meet the use standards, and the process is complicated; Although the critical fluid extraction method has a higher yield than the previous two, it requires an operating pressure of 35 MPa during the extraction process, and the loss of oryzanol is large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Take crude rice bran oil and filter to remove solid impurities; then put the crude oil into a hydration pot, add phosphoric acid with a mass of crude oil of 3‰, stir for 20 minutes to remove non-hydratable phospholipids, then raise the temperature to 70°C, add crude oil mass 5% hot water at 80°C, stirred for 40min, precipitated for 9h for hydration and degumming; the degummed rice bran crude oil was subjected to high-voltage pulse electric field treatment, the electric field strength was 15kv / cm, the pulse time was 90us, and the pulse frequency was 180Hz; then Use the extractant for extracting the free fatty acid phase and the extractant for extracting the oil phase, extract the degummed rice bran crude oil for 3 times at 25°C, add 1ml of the extractant for extracting the free fatty acid phase and 1ml for each 1g of the degummed rice bran crude oil The ratio of the extractant for extracting the oil phase is added to the extractant for extracting the free fatty acid phase...

Embodiment 2

[0017] Take crude rice bran oil and filter to remove solid impurities; then put the crude oil into a hydration pot, add phosphoric acid with a mass of crude oil of 3‰, stir for 20 minutes to remove non-hydratable phospholipids, then raise the temperature to 70°C, add crude oil mass 5% hot water at 75°C, stirred for 40 minutes, precipitated for 9 hours for hydration and degumming; the degummed rice bran crude oil was subjected to high-voltage pulse electric field treatment, the electric field strength was 30kv / cm, the pulse time was 70us, and the pulse frequency was 300Hz; then Use the extractant for extracting the free fatty acid phase and the extractant for extracting the oil phase, extract the degummed rice bran crude oil 5 times at 35 ° C, and add 1.5 ml of the extractant for extracting the free fatty acid phase to 1 g of the degummed rice bran crude oil each time. Add the extractant of free fatty acid phase and the extractant of oil phase to the ratio of 2ml of extractant f...

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PUM

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Abstract

The invention discloses a technology for refining rice bran oil from rice bran. The technology for refining the rice bran oil from the rice bran comprises the steps of raw material pretreatment, degumming, high-voltage pulsed electric field treatment, deacidification, secondary degumming, adsorption and decolouration, deodorization, obtainment of a refined oil product and the like. Compared with the prior art, by means of the technology for refining the rice bran oil from the rice bran, the purpose of fully separating grease from free fatty acid is achieved, the acid value of the rice bran oil ranges from 2.0 mgKOH / g to 3.5 mgKOH / g and is far lower than the acid value, ranging from 10 mgKOH / g to 30 mgKOH / g, of ordinary rice bran crude oil, the loss problem of oryzanol in the alkali refining and deacidification process can be avoided, and the quality and the nutrition value of the refined oil product are improved.

Description

technical field [0001] The invention belongs to the technical field of rice bran oil processing, in particular to a process for refining rice bran oil from rice bran. Background technique [0002] Rice bran oil is a deep-processing product of rice bran, which is rich in linoleic acid, oleic acid, vitamin E, oryzanol, and sterols, and has high nutritional and health value. At present, the production methods of rice bran oil are mainly pressing, leaching and supercritical fluid extraction. However, the pressed oil has a high acid value, and the leaching method has problems such as solvent residues, and the rice bran crude oil obtained by the two methods needs to go through steps such as deacidification, degumming, dewaxing, decolorization and deodorization to meet the use standards, and the process is complicated; Although the critical fluid extraction method has a higher yield than the previous two methods, it requires an operating pressure of 35 MPa during the extraction pr...

Claims

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Application Information

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IPC IPC(8): C11B3/00A23D9/04
Inventor 周鹏
Owner JIANGXI XIHAI GREASE
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