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Method for refining and purifying rice bran oil

A technology for refining and purifying rice bran oil, applied in the direction of fat oil/fat refining, fat production, etc., can solve the problems affecting the use value and safe storage of oil, low rice bran oil extraction rate, and high energy consumption in the production process, and achieve the effect of decolorization and impurity removal. Good, enhance the market competitiveness, the effect of low production energy consumption

Inactive Publication Date: 2018-06-19
福建小薇金匙科技孵化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rice bran oil produced by the existing solvent extraction method has the characteristics of darker color, and at the same time, the production process consumes a lot of energy, the extraction rate of rice bran oil is low, and the impurity content is high.
The existence of impurities in crude oil not only affects the use value and safe storage of oil, but also brings difficulties to deep processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Degumming: first heat 100kg rice bran crude oil to 65-70°C, add 5kg 80-85°C hot water, stir for 15min, then add 0.5kg concentration of 70wt% phosphoric acid solution and 2kg 15wt% calcium chloride solution, continue Stir for 2 hours, stand still for 5 hours after degumming, and finally obtain the upper layer of degummed oil and the lower layer of colloidal oil by centrifugation, and heat the upper layer of degummed oil to 100-105 ° C for vacuum dehydration;

[0025] (2) Dewaxing: The upper degummed oil obtained by vacuum dehydration is cooled to precipitate crystalline wax. The cooling is divided into three stages. The cooling rate of the first stage is 4-5°C / h. When the temperature drops below 70°C, it enters the second stage. , the cooling rate of the second stage is 2-3°C / h, and enter the third stage when the temperature drops below 50°C, the cooling rate of the third stage is 1-2°C / h, and keep stirring for 3 hours when the temperature drops below 15°C, Then go t...

Embodiment 2

[0031] (1) Degumming: first heat 100kg rice bran crude oil to 65-70°C, add 8kg 80-85°C hot water, stir for 15min, then add 0.5kg concentration of 70wt% phosphoric acid solution and 3kg 15wt% calcium chloride solution, continue Stir for 2 hours, stand still for 5 hours after degumming, and finally obtain the upper layer of degummed oil and the lower layer of colloidal oil by centrifugation, and heat the upper layer of degummed oil to 100-105 ° C for vacuum dehydration;

[0032] (2) Dewaxing: The upper degummed oil obtained by vacuum dehydration is cooled to precipitate crystalline wax. The cooling is divided into three stages. The cooling rate of the first stage is 4-5°C / h. When the temperature drops below 70°C, it enters the second stage. , the cooling rate of the second stage is 2-3°C / h, and enter the third stage when the temperature drops below 50°C, the cooling rate of the third stage is 1-2°C / h, and keep stirring for 3 hours when the temperature drops below 15°C, Then go t...

Embodiment 3

[0038] (1) Degumming: first heat 100kg rice bran crude oil to 65-70°C, add 5kg 80-85°C hot water, stir for 15min, then add 0.5kg concentration of 70wt% phosphoric acid solution and 2kg 15wt% calcium chloride solution, continue Stir for 2 hours, stand still for 5 hours after degumming, and finally obtain the upper layer of degummed oil and the lower layer of colloidal oil by centrifugation, and heat the upper layer of degummed oil to 100-105 ° C for vacuum dehydration;

[0039](2) Dewaxing: The upper degummed oil obtained by vacuum dehydration is cooled to precipitate crystalline wax. The cooling is divided into three stages. The cooling rate of the first stage is 4-5°C / h. When the temperature drops below 70°C, it enters the second stage. , the cooling rate of the second stage is 2-3°C / h, and enter the third stage when the temperature drops below 50°C, the cooling rate of the third stage is 1-2°C / h, and keep stirring for 3 hours when the temperature drops below 15°C, Then go th...

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PUM

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Abstract

The invention discloses a method for refining and purifying rice bran oil, and relates to the technical field of deep processing of agricultural and sideline products. The method comprises the following steps: (1) degumming, (2) dewaxing, (3) decolorizing, (4) deacidification, (5) deodorization and (6) freeze degreasing. The method for refining and purifying the rice bran oil has the advantages ofsimplicity in operation, low energy consumption during production, high oil yield, and good decolorizing and impurity-removing effects, and effectively reduces the content of impurities in finished rice bran oil to improve the quality of the finished rice bran oil in order to enhance the market competitiveness.

Description

Technical field: [0001] The invention relates to the technical field of deep processing of agricultural by-products, in particular to a method for refining and purifying 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; Preservation, thermal oxidation resistance and other advantages, known as "healthy oil", "nutrition oil". [0003] Among the existing rice bran oil extraction technologies, the solvent extraction method has a higher oil yield and is suitable for large-scale production and processing. However, the rice bran oil produced by the existing solvent leaching method has the characteristics of darker color, and at the same time, the production process has high energy consumption, low extraction rate of rice bran oil, and high impurity content. The e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00
CPCC11B3/001
Inventor 黄小平
Owner 福建小薇金匙科技孵化有限公司
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