Method for reducing 3-chlorine-1,2-propylene glycol ester during grease processing

A technology of oil processing and propylene glycol ester, which is applied in the direction of fat oil/fat refining and fat production, and can solve the problems of decolorization and deodorization effects such as decline, increase, and incomplete degradation

Inactive Publication Date: 2015-04-22
SHANGHAI JIAO TONG UNIV
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first method can remove 30%-40% of 3-MCPD ester, but there is a large difference between different raw oils (such as palm oil and soybean oil), and even between different batches of the same raw oil ; As for the second method, oil refining has reached the optimal condition after decades of development. For example, the increase of pH can reduce the production of 3-MCPD ester, but the amount of another harmful substance

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for reducing 3-chlorine-1,2-propylene glycol ester during grease processing
  • Method for reducing 3-chlorine-1,2-propylene glycol ester during grease processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Add 2 mL of ferric chloride into 5 mL of glyceryl tristearate solution, the concentration of the solution is 0.5 mg / mL, and the solvent is n-hexadecane. After ultrasonic oscillation for 30 minutes, a series of different contents of EDTA-2Na (1.2, 2.3, 4.6, 9.2, 23.0 mg) were added, which, together with FeCl 3 The molar ratios are 0.5:1, 1:1, 2:1, 4:1, 10:1, respectively. The control group did not add such as EDTA-2Na. The reaction system was continuously stirred at 120° C. for 20 minutes, and then cooled to room temperature. The reaction solution was diluted with a 50-fold methanol:isopropanol=1:1 (v / v) solution, filtered and analyzed by UPLC-Q-TOF MS.

[0059] The content of the 3-MCPD diester that above-mentioned experiment generates is as follows figure 1 shown. The experimental results showed that with the increase of the ratio of EDTA-2Na and ferric chloride, the content of 3-MCPD ester formed in the reaction product decreased significantly. When EDTA-2Na and ...

Embodiment 2

[0061] 400mg FeCl 3 Add to 80g refined palm oil, ultrasonic treatment for 5min, then add 0.938g and 4.655g EDTA-2Na respectively, the blank group does not add EDTA-2Na. Then under the protection of nitrogen, the pressure was maintained at 5 mbar with an oil pump, and the mixture was heated at 240° C. for 1 h. After the reaction was completed, the nitrogen gas was continuously fed. When the temperature was lower than 100°C, the pressure could return to normal atmospheric pressure. Take 10 μL of the sample and dilute it 100 times with isopropanol, filter it through a 0.2 μm GHP filter membrane, and detect the concentration of 3-MCPD ester (detection Method is identical with embodiment 1).

[0062] The content of the 3-MCPD ester that above-mentioned experiment generates is as follows figure 2 shown. With the increase of the ratio of EDTA-2Na and ferric chloride, the content of 3-MCPD ester in the reaction product decreased significantly.

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

No PUM Login to view more

Abstract

The invention provides a method for reducing 3-chlorine-1,2-propylene glycol ester (called 3-MCPD ester for short) during grease processing. 3-MCPD ester is a harmful substance generated during the grease processing, the control over the content of the 3-MCPD ester in grease and a related food has great significance in maintaining food safety. The idea of the invention is derived from that an iron ion is discovered to have catalytic action on the formation of the 3-MCPD ester in study, and thus the content of the 3-MCPD ester contained in the grease can be controlled by reducing the content of the iron ion. According to the method provided by the invention, the measures of storing the grease by using a non-ferrous container and adding an antioxidant, an iron ion chelating agent and the like during grease storage or processing are adopted, and the measures can both be used for obviously reducing the content of the 3-MCPD ester contained in the grease.

Description

technical field [0001] The invention relates to the field of oil chemical industry. Specifically, the invention provides a method for reducing 3-chloro-1,2-propanediol ester in oil processing. Background technique [0002] 3-Chloro-1,2-propanediol ester (3-MCPD ester for short) is a nephrotoxic and carcinogenic harmful substance produced in the oil refining process. It is currently found in bread, cakes, biscuits, baby milk powder, refined vegetable oil Exist in many kinds of foods. In 2008, German scholars reported that 3-chloro-1,2-propylene glycol esters (30-2195 μg / kg) were detected in human milk, indicating that 3-chloroglycerides can be absorbed and distributed in human tissues and organs. The harm of 3-chloro-1,2-propanediol ester has attracted the attention of food companies and governments in many countries such as the European Union, the United States, Japan and China. [0003] Triacylglycerol (TAG) is the main glyceride compound in oil, and in palm oil, triglyc...

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
IPC IPC(8): C11B3/00
CPCC11B3/00C11B3/001
Inventor 俞良莉张晓伟张忠飞高博彦史海明牛宇戈
Owner SHANGHAI JIAO TONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap