Polystyrene Upcycling into Fungal Natural Products and a Biocontrol AgentClick to copy article linkArticle link copied!
- Chris RabotChris RabotDepartment of Pharmacology & Pharmaceutical Sciences, University of Southern California, 1985 Zonal Ave, Los Angeles, California 90089 United StatesMore by Chris Rabot
- Yuhao ChenYuhao ChenDepartment of Chemistry, Donald P. and Katherine B. Loker Hydrocarbon Institute, University of Southern California, 837 Bloom Walk, Los Angeles, California 90089 United StatesWrigley Institute for Environmental Studies, 3454 Trousdale Parkway, Los Angeles, California 90089 United StatesMore by Yuhao Chen
- Shu-Yi LinShu-Yi LinDepartment of Pharmacology & Pharmaceutical Sciences, University of Southern California, 1985 Zonal Ave, Los Angeles, California 90089 United StatesMore by Shu-Yi Lin
- Ben MillerBen MillerDepartment of Pharmacology & Pharmaceutical Sciences, University of Southern California, 1985 Zonal Ave, Los Angeles, California 90089 United StatesDepartment of Chemistry, Donald P. and Katherine B. Loker Hydrocarbon Institute, University of Southern California, 837 Bloom Walk, Los Angeles, California 90089 United StatesMore by Ben Miller
- Yi-Ming ChiangYi-Ming ChiangDepartment of Pharmacology & Pharmaceutical Sciences, University of Southern California, 1985 Zonal Ave, Los Angeles, California 90089 United StatesMore by Yi-Ming Chiang
- C. Elizabeth OakleyC. Elizabeth OakleyDepartment of Molecular Biosciences, University of Kansas, 1200 Sunnyside Avenue, Lawrence, Kansas 66045 United StatesMore by C. Elizabeth Oakley
- Berl R. OakleyBerl R. OakleyDepartment of Molecular Biosciences, University of Kansas, 1200 Sunnyside Avenue, Lawrence, Kansas 66045 United StatesMore by Berl R. Oakley
- Clay C. C. Wang*Clay C. C. Wang*Email: [email protected]Department of Pharmacology & Pharmaceutical Sciences, University of Southern California, 1985 Zonal Ave, Los Angeles, California 90089 United StatesDepartment of Chemistry, Donald P. and Katherine B. Loker Hydrocarbon Institute, University of Southern California, 837 Bloom Walk, Los Angeles, California 90089 United StatesWrigley Institute for Environmental Studies, 3454 Trousdale Parkway, Los Angeles, California 90089 United StatesMore by Clay C. C. Wang
- Travis J. Williams*Travis J. Williams*Email: [email protected]Department of Chemistry, Donald P. and Katherine B. Loker Hydrocarbon Institute, University of Southern California, 837 Bloom Walk, Los Angeles, California 90089 United StatesWrigley Institute for Environmental Studies, 3454 Trousdale Parkway, Los Angeles, California 90089 United StatesMore by Travis J. Williams
Abstract

Polystyrene (PS) is one of the most used yet infrequently recycled plastics. Although manufactured on the scale of 300 million tons per year globally, current approaches toward PS degradation are energy- and carbon-inefficient, slow, and/or limited in the value that they reclaim. We recently reported a scalable process to degrade post-consumer polyethylene-containing waste streams into carboxylic diacids. Engineered fungal strains then upgrade these diacids biosynthetically to synthesize pharmacologically active secondary metabolites. Herein, we apply a similar reaction to rapidly convert PS to benzoic acid in high yield. Engineered strains of the filamentous fungus Aspergillus nidulans then biosynthetically upgrade PS-derived crude benzoic acid to the structurally diverse secondary metabolites ergothioneine, pleuromutilin, and mutilin. Further, we expand the catalog of plastic-derived products to include spores of the industrially relevant biocontrol agent Aspergillus flavus Af36 from crude PS-derived benzoic acid.
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