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

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...

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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, acrylamide, has increased significantly, while decolorization Although the reduction of deodorization temperature reduces the content of 3-MCPD ester, the effect of decolorization and deodorization decreases, and it takes longer; the third method has a minimum balance in thermal degradation, and the degradation is not complete, and the adsorbent and enzymatic hydrolysis are still Exploring, currently only in the research stage;

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