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Harnessing synthetic biology to empower a circular plastics economy
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Researchers reviewed how synthetic biology tools — including engineered enzymes, metabolic pathways, and microbial consortia — can be harnessed to break down and upcycle plastic waste, advancing a circular plastics economy through low-energy bioprocesses.
Biotechnology offers unique opportunities for mitigating and upcycling plastic waste with low-intensity bioprocesses. Synthetic biology can further enhance bioprocesses for sustainably dealing with plastic waste and supporting a circular plastics economy. We provide an overview of current strategies for leveraging synthetic biology and microbial community engineering to degrade and upcycle plastic waste, with application to both industrial and environmental settings. We further discuss complementary strategies for pre-treating plastic materials and altering recalcitrant vinyl polymers to enhance bioprocessing efficiency. Additionally, we provide commentary on future research directions that would propel biotechnological solutions toward application in a circular plastics economy.
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Toward Microbial Recycling and Upcycling of Plastics: Prospects and Challenges
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This review examines the prospects and challenges of using microorganisms to recycle and upcycle plastic waste, assessing the current state of microbial degradation research across major polymer types. The authors identify metabolic engineering and synthetic biology as key tools needed to make biological plastic recycling economically viable at scale.
Cutting-edge developments in plastic biodegradation and upcycling via engineering approaches
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This review examines how engineering approaches from synthetic biology and metabolic engineering can improve both the breakdown and upcycling of plastic waste. Researchers found that various microorganisms and their enzymes can degrade plastics and convert the resulting monomers into valuable products like biosurfactants, bioplastics, and biochemicals. The study suggests that optimizing microbial pathways and using hybrid chemo-biological approaches could help build a more sustainable circular plastic economy.
Synthetic Biology Boosts the Biological Depolymerization and Upcycling of Waste Plastic Resources
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This review explored recent advances in using microorganisms and enzymes for biological depolymerization and upcycling of plastic waste, covering PET, polyethylene, polystyrene, and other polymers, with emphasis on microbial consortia, enzyme discovery, and metabolic engineering for converting degradation products into value-added chemicals. The authors identified synthetic biology tools including high-throughput screening and bioinformatics as promising approaches to overcoming current limitations in enzyme efficiency and substrate specificity.
[Preface to the special issue: biotechnology of plastic waste degradation and valorization].
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This preface introduces a special issue on biotechnology approaches to plastic waste degradation and valorization, covering microbial and enzymatic strategies for breaking down synthetic plastics. Biological plastic degradation could help reduce the environmental persistence of plastics that eventually fragment into microplastics.
Biological Upcycling of Plastics Waste
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This review summarizes research on using biological systems -- including enzymes, bacteria, and engineered microbes -- to break down plastic waste into useful chemicals and materials. Rather than traditional recycling that produces lower-quality plastic each time, biological approaches can convert waste plastics into valuable products like biodegradable plastics, fuels, and specialty chemicals, potentially reducing the flow of plastics into the environment where they break into harmful microplastics.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.