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The standard for the electrochemical determination of bisphenol A (BPA) migration in food metal containers has been released for comments
Time：
2023-10-13
The standard for the electrochemical determination of bisphenol A (BPA) migration in food metal containers has been released for comments
Metal containers are widely used in the food packaging industry. In order to prevent metal containers from being corroded by their contents, coatings are usually applied to protect food from direct contact with metals.
Potential hazards of BPA
The commonly used epoxy resin coatings usually use substances such as bisphenol A (BPA) as raw materials. During processing or storage, the chemicals in the coatings may migrate into food, posing potential hazards to human health.
Supervision of BPA in China
At present, China allows the use of BPA as a partial coating component and coating additive, with a specific migration limit (SML) of 0.6 mg/kg set for BPA. In addition, BPA is explicitly prohibited from being used in the production of food contact materials and products for infants and young children.
As early as 2016, China introduced GB 31604.10-2016 "Determination of 2,2-di (4-hydroxyphenyl) propane (bisphenol A) migration in food contact materials and products" as the migration testing standard for BPA.
Relevant industry standards are being drafted
In order to further enrich the industry's testing methods, the National Technical Committee for Standardization of Materials and Products in Direct Contact with Food (Metal Products Subcommittee) organized the development of the industry standard "Electrochemical Determination of Bisphenol A Migration in Food Metal Containers".
At present, the draft for soliciting opinions on this standard has been completed, and opinions are now widely solicited publicly. Feedback on opinions is expected to be received by October 21, 2023.
The solicitation draft of this standard mainly describes the method of using electrochemical methods to determine the migration of BPA in food metal containers.
The principle is to convert the electrochemical signal generated by the electrochemical reaction of BPA on a specific electrode surface into an electrical signal, which is processed by an electrochemical detector to establish a linear relationship between the current value and the logarithm of BPA molar concentration, thereby achieving quantitative determination of BPA migration in food metal containers.
The common detection methods for BPA mainly include chromatography, spectroscopy, etc.
Compared to other methods, the electrochemical analysis detection method developed in this standard (in the solicitation draft) has the advantages of relatively simple sample pretreatment and relatively low equipment price.
The formulation of this standard provides evidence for the electrochemical detection technology of bisphenol A, supplements and improves China's testing methods for BPA in food metal containers, and provides strong guarantees for food safety and market regulation.
Remind BPA related enterprises to pay attention to industry trends and ensure product migration testing compliance.
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