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Engineered E. coli Produce Biodegradable PET Alternative at Record Levels

Peer-reviewed results validate a nitrogen-assimilating pathway that cleanly biosynthesizes the target monomer without unwanted byproducts.

Overview

  • Kobe University researchers reported bioreactor production of PDCA from glucose at concentrations more than seven times higher than previously achieved.
  • Materials made with PDCA are biodegradable and exhibit physical properties comparable to or surpassing those of widely used PET.
  • The metabolic design integrates nitrogen into the biosynthetic route, enabling efficient production without detectable impurities.
  • A bottleneck caused by enzyme-generated hydrogen peroxide was resolved in culture by adding an H2O2-scavenging compound.
  • The team says scale-up will hinge on further optimization and on managing the economic and logistical impact of the required scavenger.