Products Cited in Publications Worldwide Global survey of bisphenol color developers in thermal food labels and a study of the role of food packaging materials in preventing color developer migration into food

Global survey of bisphenol color developers in thermal food labels and a study of the role of food packaging materials in preventing color developer migration into food

XU, Ziyun; GOODYER, Cynthia Gates; HALES, Barbara F; Bayen, Stephan

DOI:

Abstract

In this study, 247 food thermal labels, collected from 15 countries across five continents in 2021-2023, were assessed for the occurrence of bisphenol color developers. Analysis with LC-qTOF-MS showed that BPS was the most frequently detected color developer, present in 48% of the thermal labels. Some relatively new alternatives, such as NKK-1304 (15%) and DBSP (11%), were identified using suspect screening for the first time, indicating the growing use of new compounds in the food packaging industry. Despite regulatory restrictions on its usage, bisphenol A (BPA) was still detected in 2% of the food thermal label samples from certain countries. 80% of the thermal labels collected were appended to food packaging made of polyvinyl chloride (PVC). In a controlled food simulant (10-95% ethanol, 10 days) experiment, approximately 63% of BPS and 31% of D-90 in the labels were able to migrate across PVC cling films. In contrast, polyethylene (PE) films and paper-based materials exhibited a significant barrier to both BPS and D-90 migration. These results highlight the diversity of color developers used in food thermal labels globally, the need for comprehensive risk assessments of novel color developers and the importance of choosing packaging materials that can act as barriers to their migration into food.

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