TWINLOOP

The project

Assessing contaminants in recycled plastics intended for food packaging is an essential but lengthy and complex process.

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To overcome this hurdle and speed up qualification procedures, the TwinLoop project, funded by the French National Research Agency (ANR) and coordinated by Sandra Domenek (SayFood – INRAE/AgroParisTech), aims to develop faster and more reliable approaches to ensure the safety of these materials. Using artificial intelligence, rapid analysis tools such as electronic noses and spectroscopy will be developed and validated against high-precision chromatography.

These technologies will be integrated into recycling lines to enable continuous quality monitoring. This will help the industry move forward on its path toward a transparent circular economy that protects consumer health.

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Officially launched in June 2025 during a meeting bringing together all project partners, TwinLoop brings together, over a four-year period, 19 academic, technical, and industrial stakeholders covering the entire recycling chain. The project will lead to the creation of a unique database and real-time monitoring tools.

Ineris leads workpackage 3 "Safety assessment and decision making". This WP includes the following tasks:

T3.1: Hazard evaluation  of a subset  of XS and M ring by experimental toxicological analysis 

T3.2: Link of QSAR models and existing toxicological databases to annotated substances of LC- or GC-MS fingerprints (XS and M ring)

T3.3:  Correlation of spectroscopic and chromatographic fingerprints and experimentally verified hazard using multivariable analysis 

T3.4: Migration and exposure models and risk evaluation of chromatographic and spectroscopic fingerprints of annotated substances