Chemical migration into coffee, canned vegetables, and Indian curd


In an article published on April 30, 2022, in the Journal of Hazardous Materials, Roman Cariou from Oniris, Nantes, France, and co-authors investigated non-intentionally added substances (NIAS) in coatings of vegetable cans.

For their study, Cariou et al. purchased 12 cans containing different vegetables in France. They analyzed the chemicals extracted from the can coatings with acetonitrile and that migrated into the canned food using non-targeted liquid chromatography-high resolution mass spectrometry (LC-HRMS). The scientists pinpointed over 125 substances. “Oligoesters, a diverse family of unwanted compounds arising from synthesis of polyesters, prevailed in the data set.” The total oligoester concentration in drained vegetables was 330 µg/kg on average. Among the identified NIAS were also diglycidyl ether derivative (BADGE, CAS 1675-54-3) derivatives as well as phenolic oligomers and benzoguanamine derivates, which have not been described previously.

The authors emphasized that their results “support the fact that oligoesters are a major NIAS family of diverse combinations to which the French population is systematically exposed when consuming canned vegetables.” Therefore, they consider a “proper risk assessment” on these NIAS essential.

In an article published on April 24, 2022, in the Journal of Food Science and Technology, Krushna Chapke and co-authors from Dairy Chemistry Division, NDRI, Karnal, India, analyzed the chemicals migrating from low-density polyethylene (LDPE) in Dahi, an ancient Indian curd.

The authors acquired LDPE-based Dahi packaging materials from five different Indian producers and performed extraction and migration experiments using six different solvents as well as Dahi and food simulant as specified by the Bureau of Indian Standards (BIS, IS 9845:1998), respectively. Subsequently, they subjected the samples to gas chromatography-mass spectrometry (GC-MS) to assess chemical concentrations and identities.

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Food Packaging Forum, 13-05-22