DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Conversion of Polyethylenes into Fungal Secondary Metabolites

Journal Article · · Angewandte Chemie (International Edition)

Waste plastics represent major environmental and economic burdens due to their ubiquity, slow breakdown rates, and inadequacy of current recycling routes. Polyethylenes are particularly problematic, because they lack robust recycling approaches despite being the most abundant plastics in use today. We report a novel chemical and biological approach for the rapid conversion of polyethylenes into structurally complex and pharmacologically active compounds. We present conditions for aerobic, catalytic digestion of polyethylenes collected from post-consumer and oceanic waste streams, creating carboxylic diacids that can then be used as a carbon source by the fungus Aspergillus nidulans. As a proof of principle, we have engineered strains of A. nidulans to synthesize the fungal secondary metabolites asperbenzaldehyde, citreoviridin, and mutilin when grown on these digestion products. This hybrid approach considerably expands the range of products to which polyethylenes can be upcycled.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
2424126
Journal Information:
Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 4 Vol. 62; ISSN 1433-7851
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (54)

Chemisches Recycling von Kunststoffen durch oxidativen Abbau zu wertvollen organischen Verbindungen journal December 1998
Chemical Recycling of Plastics to Useful Organic Compounds by Oxidative Degradation journal December 1998
Biodegradation of microbial and synthetic polyesters by fungi journal January 2003
Process development of itaconic acid production by a natural wild type strain of Aspergillus terreus to reach industrially relevant final titers journal February 2017
Metabolic engineering of strains: from industrial-scale to lab-scale chemical production journal November 2014
Marine bacterial biodegradation of low-density polyethylene (LDPE) plastic journal February 2021
Mechanism and Catalysis of Oxidative Degradation of Fiber-Reinforced Epoxy Composites journal March 2018
Microbial degradation and valorization of poly(ethylene terephthalate) (PET) monomers journal April 2022
Biodegradation of thermally treated high-density polyethylene (HDPE) by Klebsiella pneumoniae CH001 journal September 2017
Environment-adaptable polymers journal January 1993
Isolation and characterization of the glyceraldehyde-3-phosphate dehydrogenase gene of Aspergillus nidulans journal September 1988
The ethanol regulon in Aspergillus nidulans: characterization and sequence of the positive regulatory gene alcR journal December 1988
Binding of citreoviridin to the beta subunit of the yeast F1-ATPase. journal January 1981
Genomic Mining for Aspergillus Natural Products journal January 2006
A clone-based transcriptomics approach for the identification of genes relevant for itaconic acid production in Aspergillus journal June 2011
Recovery and reuse of acid digested amine/epoxy-based composite matrices journal May 2020
Biological degradation of synthetic polyesters—Enzymes as potential catalysts for polyester recycling journal October 2006
Microbial and “de novo” transformation of dicarboxylic acids by three airborne fungi journal February 2008
Glucose-deprived HT-29 human colon carcinoma cells are sensitive to verrucosidin as a GRP78 down-regulator journal January 2007
Towards bio-upcycling of polyethylene terephthalate journal July 2021
Trash to Treasure: Microwave-Assisted Conversion of Polyethylene to Functional Chemicals journal December 2017
Upcycling Single-Use Polyethylene into High-Quality Liquid Products journal September 2019
Biological Valorization of Poly(ethylene terephthalate) Monomers for Upcycling Waste PET journal November 2019
An Aspergillus nidulans Platform for the Complete Cluster Refactoring and Total Biosynthesis of Fungal Natural Products journal December 2020
Up-Cycling of PET (Polyethylene Terephthalate) to the Biodegradable Plastic PHA (Polyhydroxyalkanoate) journal October 2008
A Gene Cluster Containing Two Fungal Polyketide Synthases Encodes the Biosynthetic Pathway for a Polyketide, Asperfuranone, in Aspergillus nidulans journal March 2009
Novel Catalysis by N-Hydroxyphthalimide in the Oxidation of Organic Substrates by Molecular Oxygen journal June 1995
Nitric Acid Oxidation of High-Density Polyethylene. Organic Chemical Aspects journal January 1978
Fusion PCR and gene targeting in Aspergillus nidulans journal December 2006
An engineered PET depolymerase to break down and recycle plastic bottles journal April 2020
Catalytic upcycling of high-density polyethylene via a processive mechanism journal October 2020
Evaluation of HDPE and LDPE degradation by fungus, implemented by statistical optimization journal January 2017
Microbial synthesis of vanillin from waste poly(ethylene terephthalate) journal January 2021
Catalytic, aerobic depolymerization of epoxy thermoset composites journal January 2021
Purification and preliminary characterization of alcohol dehydrogenase from Aspergillus nidulans journal January 1985
The pleuromutilin drugs tiamulin and valnemulin bind to the RNA at the peptidyl transferase centre on the ribosome journal September 2001
Inhibition of Tau Aggregation by Three Aspergillus nidulans Secondary Metabolites: 2,ω-Dihydroxyemodin, Asperthecin, and Asperbenzaldehyde journal January 2014
Lignin valorization through integrated biological funneling and chemical catalysis journal August 2014
Characterization and engineering of a two-enzyme system for plastics depolymerization journal September 2020
Biosurfactants as facilitators in Biodegradation of Low-Density Polyethylene (LDPE) journal April 2021
Metabolic engineering of Pseudomonas putida for increased polyhydroxyalkanoate production from lignin journal January 2020
Microplastics as an emerging threat to terrestrial ecosystems journal January 2018
Efficient and selective degradation of polyethylenes into liquid fuels and waxes under mild conditions journal June 2016
Production, use, and fate of all plastics ever made journal July 2017
Biodegradation of synthetic polymers in soils: Tracking carbon into CO 2 and microbial biomass journal July 2018
Beyond plastic waste journal November 2017
Polyethylene upcycling to long-chain alkylaromatics by tandem hydrogenolysis/aromatization journal October 2020
Mixed plastics waste valorization through tandem chemical oxidation and biological funneling journal October 2022
Antifungal properties of α,ω-alkanedicarboxylic acids and their dimethyl esters journal August 1976
Enhanced itaconic acid production in Aspergillus niger using genetic modification and medium optimization journal August 2012
Current challenges of research on filamentous fungi in relation to human welfare and a sustainable bio-economy: a white paper journal August 2016
Plastic Pollution in the World's Oceans: More than 5 Trillion Plastic Pieces Weighing over 250,000 Tons Afloat at Sea journal December 2014
The fungal natural product azaphilone-9 binds to HuR and inhibits HuR-RNA interaction in vitro journal April 2017
Identification and Validation of an Aspergillus nidulans Secondary Metabolite Derivative as an Inhibitor of the Musashi-RNA Interaction journal August 2020