Grease refining method based on enzymatic degumming technology

A degumming and oil technology, applied in the direction of fat oil/fat refining, fat production, etc., can solve the problems affecting the application value of acidified oil and the inability of phospholipids to be used, and achieve the effect of convenient high-value utilization, reducing phospholipid content and improving quality.

Inactive Publication Date: 2016-08-31
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soapstock is generally used to produce acidified oil. Due to the miscellaneous components in soapstock, the phospholipids in it cannot be used, and many side reactions will occur in the production of acidified oil. The obtained acidified oil is black viscous , also seriously affected the application value of acidified oil

Method used

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  • Grease refining method based on enzymatic degumming technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 (contrast)

[0035] Hydrated degummed soybean oil crude oil 5kg (provided by Guangzhou Zhizhiyuan Oil Industry Co., Ltd., phosphorus content is 176.2mg / kg, acid value 2.3), heated to 80°C, then added 10mL of 45% citric acid aqueous solution, mixed homogeneously Mix well, then stir for 30 minutes, add 100 mL of 15% NaOH solution, stir and mix for 1 minute, centrifuge to remove soapstock, and then wash with water to obtain desoaped oil, which is recorded as desoaped oil 1. The phosphorus content of desoaped oil 1 was measured to be 8.3 mg / kg.

[0036] Take 500g of desoaped oil, after vacuum drying, add 1% activated clay for decolorization, and then put it in a flask for deodorization. Then you can get refined oil.

[0037] Take 100g of soapstock, add excess dilute sulfuric acid to acidify, stir for 5 minutes, observe that the oil layer is not complete, then heat it to reflux for 4 hours, leave it to stand and layer well, and obtain acidified oil, which is r...

Embodiment 2

[0038] Embodiment 2 (contrast)

[0039] Soybean oil crude crude oil 5kg (provided by Guangzhou Zhizhiyuan Oil Industry Co., Ltd., phosphorus content is 962.3mg / kg, acid value 2.1), heated to 80°C, then added 10mL of 45% citric acid aqueous solution, homogeneously mixed Then stir and react for 30 minutes, add 100 mL of 15% NaOH solution, stir and mix for 1 minute, centrifuge to remove soapstock, and then wash with water to obtain desoaped oil, which is recorded as desoaped oil 2. The phosphorus content of desoaped oil 2 was measured to be 11.2 mg / kg.

[0040] Take 500g of desoaped oil, after vacuum drying, add 1% activated clay for decolorization, and then put it in a flask for deodorization. Then you can get refined oil.

[0041] Take 100g of soapstock, add excess dilute sulfuric acid to acidify, stir for 5 minutes, observe that the grease layer is not complete, then heat it to reflux for 4 hours, leave it to stand and layer well, and get acidified oil, which is recorded as ...

Embodiment 3

[0043] Hydrated degummed soybean oil crude oil 5kg (provided by Guangzhou Zhizhiyuan Oil Industry Co., Ltd., phosphorus content is 176.2mg / kg, acid value 2.3), heated to 80°C, then added 10mL of 45% citric acid aqueous solution, mixed homogeneously Mix evenly, then stir for 30 minutes, cool down to 53°C, add 110 mL of 4% NaOH solution, mix well, then add 0.05 g of phospholipase Lecitase Ultra (provided by Novozymes, the measured activity is 10260 U / mL), and mix homogeneously for 5 minutes after adding the enzyme , and then stirred and reacted for 2 hours and then left to stand for stratification. The lower layer is colloid, and the upper layer is enzymatic degummed oil. The measured phosphorus content is 16.2mg / kg.

[0044] Add 80 mL of 15% NaOH solution to the enzymatically degummed oil, stir and mix for 1 min, centrifuge to remove soapstock, and then wash with water to obtain desoaped oil, which is recorded as desoaped oil 3. The phosphorus content of desoaped oil 3 was meas...

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Abstract

The invention discloses a grease refining method based on the enzymatic degumming technology. Grease is subjected to acid reaction, then enzymatic degumming is conducted, and degummed oil is obtained through colloid separation, wherein the phosphorus content of the degummed oil is not higher than 30 mg/kg; the degummed oil is subjected to alkali refining to obtain desaponification oil, the desaponification oil is subjected to decoloration and deodorizing, and refined oil is prepared. The method reduces the phospholipid content in soapstock and improves quality of acidic oil; the desaponification oil with lower phosphorus content can be obtained; phospholipid in grease is separated independently, and high-value application is further facilitated.

Description

technical field [0001] The invention relates to an oil refining processing method, which can obtain high-quality acidified oil by-products, can reduce the phosphorus content of desoaped oil, is beneficial to decolorization and deodorization operations, and has more advantages than traditional refining methods. Background technique [0002] Oil refining is a general term for a series of processes to remove solid impurities, free fatty acids, phospholipids, colloids, waxes, pigments, odors, etc. contained in vegetable oil. Usually, refining methods include chemical refining and physical refining. Chemical refining is characterized by the use of alkali neutralization to remove free fatty acids from oils; physical refining is the use of distillation to remove free fatty acids, usually in the deodorization section. Chemical refining is widely used because of its wide application range and stable quality of refined oil. The chemical refining of oleochemicals includes the followin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00C11B3/04C11B3/06C11B3/16
CPCC11B3/001C11B3/003C11B3/04C11B3/06C11B3/16
Inventor 杨博王永华王方华王卫飞李志刚
Owner SOUTH CHINA UNIV OF TECH
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