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A kind of method for removing 3-chloropropanediol ester

A technology of 3-chloropropanediol ester and 3-chloropropanediol monoester, which is applied in the field of removing 3-chloropropanediol ester, and can solve problems such as the increase of harmful substance acrylamide, the decline of the effect of decolorization and deodorization, and the great difference

Active Publication Date: 2019-11-01
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first method can remove 30%-40% 3-MCPD ester, but there is a big difference between different raw oils (such as palm oil and soybean oil), even between different batches of the same raw oil; For the second method, oil refining has reached the optimal conditions after decades of development. For example, the increase of pH can reduce the production of 3-MCPD, but the amount of another harmful substance, acrylamide, has increased significantly, while decolorization and deodorization Although the reduction of the temperature reduces the amount of 3-MCPD, the effect of decolorization and deodorization is reduced, and it takes more time; the degradation of conventional thermal degradation is relatively low, and the adsorbent and enzymatic hydrolysis are still under development, and are currently only in the research stage

Method used

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  • A kind of method for removing 3-chloropropanediol ester
  • A kind of method for removing 3-chloropropanediol ester
  • A kind of method for removing 3-chloropropanediol ester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Embodiment 1 Iron ion degrades 3-chloropropanediol-1-stearic acid monoester

[0056] experimental method:

[0057] 3-chloropropanediol-1-stearic acid monoester was selected as the research object to study its thermal stability with or without the participation of iron ions.

[0058] The degradation of 3-chloropropanediol-1-stearic acid monoester and glyceryl monostearate and glycidyl stearate were detected by ultra-high performance liquid chromatography-mass spectrometry (UPLC-Q-TOF-MS). The generation of free 3-chloropropanediol was detected by gas chromatography-mass spectrometry (GC-MS); the generation of extractable chlorine was detected by ion chromatography (IC).

[0059] The specific experimental steps are:

[0060] 1) Dissolve 3-chloropropanediol-1-stearic acid monoester in n-hexadecane to make a 5mg / mL solution, divide it into two parts, and add a trace amount of iron sulfate to one part to make the final concentration about 0.5 μg / mL;

[0061] 2) After hea...

Embodiment 2

[0076] Embodiment 2 Iron ion degrades 3-chloropropanediol-1-stearic acid monoester

[0077] According to the method of Example 1, the difference is that: in step 2), the above two solutions were respectively heated at 220° C. and 260° C. for 40 minutes, then cooled to room temperature and then processed respectively.

[0078] Experimental results such as figure 2 shown. As the temperature increases, the content of 3-chloropropanediol-1-stearic acid monoester drops significantly (the content after treatment at 220°C is 30%, and the content after treatment at 260°C is 2%), and it is non-toxic and harmless The content of glyceryl monostearate is greatly increased, while the content of nephrotoxic glycidyl ester is also reduced.

[0079] It can be seen that heat treatment of iron ions at 220-260°C for 40 minutes can effectively reduce the content of 3-chloropropanediol ester in the sample, and the treatment result at 260°C is better.

Embodiment 3

[0080] 3-chloropropanediol-1-stearic acid monoester in iron ion degradation grease in embodiment 3

[0081] According to the method of Example 1, the difference is: the inert solvent n-hexadecane is replaced by palm oil; and in step 2), the above two solutions are respectively heated at 260° C. for 40 minutes, and then cooled to room temperature processed separately.

[0082] Experimental results such as image 3 shown. Regardless of whether iron ions are added or not, most of the 3-chloropropanediol-1-stearic acid monoester has been degraded, and after adding iron ions, the 3-chloropropanediol-1-stearate Acid monoester content is lower. In addition, after adding iron ions, the non-toxic and harmless glyceryl monostearate produced is greatly increased, and the content of nephrotoxic glycidyl ester is also lowered.

[0083] Therefore, for oils with a high content of 3-chloropropanediol-1-stearic acid monoester, heat treatment at 260°C for 40 minutes after adding iron ions can...

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Abstract

The invention discloses a method for removing 3-monochloropropanediol ester and particularly discloses a method for reducing or removing 3-monochloropropanediol ester from a sample containing 3-monochloropropanediol ester.The method comprises the following steps: heating to treat the sample for 30-50 min in the presence of iron ions about one ten-thousandth by weight of the sample at 220-280 DEG C, thus reducing or removing 3-chloro-1,2-propanediol in the sample.The method enables the content of 3-MCPD ester in oil / grease to be significantly reduced, thus controlling the content of 3-MCPD ester in the oil / grease.

Description

technical field [0001] The invention belongs to the field of oil processing, in particular, the invention relates to a method for removing 3-chloropropanediol ester. 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-propanediol esters (30-2195 μg / kg) were detected in human milk, indicating that 3-chloro-1,2-propanediol esters can be absorbed and distributed in human tissues and organs. 3-Chloro-1,2-propanediol ester has attracted great attention from food companies and governments in many countries such as the European Union, the United States, Japan and China. [0003] At present, there are three main methods for reducing the production of 3-MCPD esters in the oil refining process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B3/00
CPCC11B3/00
Inventor 赵越张亚琼陆维盈
Owner SHANGHAI JIAOTONG UNIV