Enzymatic depolymerization of polyethylene terephthalate (PET) towards monomer recycling is a promising strategy for a bio-based circular plastic economy, but progress is limited by the lack of standard guidelines for assessing and comparing the depolymerization efficiency catalysed by various PET hydrolases. In this Perspective, the authors identify critical research gaps in sourcing novel PET hydrolases and specify crucial requirements for selecting and optimizing them for specific application scenarios.
- Ren Wei
- Peter Westh
- Uwe T. Bornscheuer