Supercharge Your Innovation With Domain-Expert AI Agents!

Method for removing metaglyceride from grease

A technology of partial glyceride and monoglyceride, applied in the field of removal of partial glyceride in oil, can solve the problems of increased burden, MAG not removed, MAG difficult to effectively remove, etc., to achieve complete removal effect

Active Publication Date: 2013-04-24
SOUTH CHINA UNIV OF TECH
View PDF8 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method improves the reaction speed of the enzymatic hydrolysis of partial glycerides, since the reaction system needs to add 100% relative partial glycerides mass, relative to 8% glycerol of the oil mixture mass, this increases the burden for the subsequent separation process , and due to the presence of a large amount of glycerol, MAG is difficult to remove effectively
[0004] Diacylglycerol acyltransferase can convert DAG into TAG with the help of acyl-CoA (CoA), but because the regeneration and industrial recycling of acyl-CoA are difficult to achieve, this pathway is still in the exploratory stage
EP1862554 discloses a method for removing DAG from edible fats and oils by using an acyl-CoA-independent acyltransferase to catalyze the reaction between DAG and glycerol, but this method will produce a certain amount of MAG and has no effect on MAG removal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 200g of the oil composition, wherein the content of TAG is 102.8g, the content of DAG is 62.0g, and the content of MAG is 35.6g; add 36g of buffer solution (0.25M citric acid-NaOH) with a pH of 6.5, add 0.4g Partial glyceride lipase Lipase SMG1 (Wang W-f, Li T, Qin X-l, Ning Z-x, Yang B, Wang Y-h. Production of lipase SMG1 and its application in synthesizing diacylglyecrol[J]. Journal of Molecular Catalysis B: Enzymatic 2012; 77:87-91), while adding 0.4 g of monoglyceride lipase bMGL, and shearing the mixture for 1 min. The reaction mixture was stirred normally at 30-35°C for 30 minutes. The enzyme-treated oil is then centrifuged and the separated oily phase is collected. In the oil obtained by using partial glyceride lipase and monoglyceride lipase at the same time, the content of TAG was 50.2%, the content of DAG was 0.6%, and the content of MAG was 0.3%.

Embodiment 2

[0025] Take 200g of the oil composition, wherein the content of TAG is 102.8g, the content of DAG is 62.0g, and the content of MAG is 35.6g; add 36g of buffer solution (0.25M citric acid-NaOH) with a pH of 6.5, add 0.4g The partial glyceride lipase Lipase SMG1 was added simultaneously with 0.4 g of the monoglyceride lipase bMGL, and the mixture was sheared for 1 min. The reaction mixture was stirred normally at 30-35°C for 1 hour. The enzyme-treated oil is then centrifuged and the separated oily phase is collected. In the oil obtained by using partial glyceride lipase and monoglyceride lipase at the same time, the content of TAG was 50.2%, the content of DAG was 0.4%, and the content of MAG was 0.3%.

Embodiment 3

[0027] Take 200g of the oil composition, wherein the content of TAG is 102.8g, the content of DAG is 62.0g, and the content of MAG is 35.6g; add 72g of buffer solution (0.25M citric acid-NaOH) with a pH of 6.5, add 0.4g The partial glyceride lipase Lipase SMG1 was added simultaneously with 0.4 g of the monoglyceride lipase bMGL, and the mixture was sheared for 1 min. The reaction mixture was stirred normally at 30-35°C for 30 minutes. The enzyme-treated oil is then centrifuged and the separated oily phase is collected. In the oil obtained by using partial glyceride lipase and monoglyceride lipase at the same time, the content of TAG was 51.1%, the content of DAG was 0.3%, and the content of MAG was 0.25%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
quality scoreaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for removing metaglyceride from grease. The method comprises the following steps of: (1) performing hydrolysis or alcoholysis reaction after the grease containing the metaglyceride is mixed with a hydroxyl supplier, metaglyceride lipases and monoglyceride lipases; and (2) separating a metaglyceride reaction product from the grease after the reaction so as to obtain the grease without the metaglyceride. According to the invention, the metaglyceride lipases and the monoglyceride lipases are used for enzyme reaction to remove the metaglyceride existed in the grease. When the two lipases are used together, the removal rate and the removal degree of the metaglyceride are far higher than the removal rate and the removal degree when any liphase is used independently. The content of the metaglyceride in the grease can be reduced to be less than 5%; and when the reaction continuous time is less than one hour, the total content of DAG and MAG in the grease without the metaglyceride is less than 1%, and the removal of the metaglyceride is more complete.

Description

technical field [0001] The invention relates to a method for removing partial glyceride in oil. Background technique [0002] Partial glycerides, including diglycerides (DAG for short) and monoglycerides (MAG), are the existing forms of natural oils and are also intermediate products of oil metabolism. Natural oils generally contain a small amount of partial glycerides, mainly DAG is about 1-10%, and MAG is about 0.1-1.4%. Studies have shown that the presence of partial glyceride in oils with triglycerides (TAG) as the main component will significantly affect the physicochemical properties and quality of oils, such as the crystallization rate, grain size, crystal growth habit, and oil quality of oils. The melting point and so on have different degrees of change. In addition, studies have shown that glycidyl esters are easily produced when oils with higher partial glyceride content are subjected to high-temperature deodorization. Therefore, when some natural oils are subje...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00
Inventor 王永华杨博王卫飞蓝东明徐扬
Owner SOUTH CHINA UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com