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Papers
61,005 resultsShowing papers similar to Characterization of Newly Discovered Polyester Polyurethane-degrading Methylobacterium Aquaticum Strain A1
ClearIdentification of Cutinolytic Esterase from Microplastic-Associated Microbiota Using Functional Metagenomics and Its Plastic Degrading Potential
Researchers used functional metagenomics to discover a new enzyme from bacteria living on microplastic surfaces that can break down certain types of plastic. The enzyme, a cutinolytic esterase, showed strong activity against synthetic polyester materials and could degrade polycaprolactone film. The findings suggest that microplastic-associated microbial communities are a promising source of novel plastic-degrading enzymes.
Discovery and Biochemical Characterization of a Novel Polyesterase for the Degradation of Synthetic Plastics
Researchers used bioinformatics to discover a new enzyme from soil bacteria capable of breaking down synthetic plastics like PET and polyurethane. The enzyme was successfully expressed and characterized in the lab, offering a promising lead for developing biological plastic recycling approaches.
Polyurethane degradation by extracellular urethanase producing bacterial isolate Moraxella catarrhalis strain BMPPS3.
A soil bacterium, Moraxella catarrhalis strain BMPPS3, was found capable of degrading polyurethane plastic, achieving 67% weight reduction in 30 days. The discovery of naturally occurring bacteria that break down plastics offers potential for biological remediation of polyurethane waste, which is widely used in construction, furniture, and automotive applications.
Screening putative polyester polyurethane degrading enzymes with semi-automated cell-free expression and nitrophenyl probes
Researchers used a rapid lab technique called cell-free expression to screen enzymes that might break down polyester polyurethane plastics, sourcing the enzymes from bacteria found growing on aircraft and vehicle surfaces. They identified 10 enzymes with measurable plastic-degrading activity, though none performed as well as an established plastic-eating enzyme. This work advances the search for biological tools that could help break down microplastic pollution in the environment.
A sequence- and structure-based characterization of microbial enzymes identifies P. stutzeri as a plastic-degrading species
Researchers characterized microbial enzymes with potential plastic-degrading capabilities, focusing on PETase and MHETase enzyme systems. The study identified Pseudomonas stutzeri as a species with notable plastic degradation potential, contributing to the growing understanding of biological approaches for addressing plastic pollution through enzymatic bioremediation.
Cell-free expression for enzyme discovery: Screening putative polyester polyurethane degrading enzymes with semi-automated cell free expression and nitrophenyl probes
Researchers used cell-free expression technology to rapidly screen bacterial enzymes for their ability to break down polyurethane plastics. Enzymes from biofilms found on aircraft were tested, identifying candidates that could potentially be developed for biodegradation of plastic pollution.
An archaeal lid-containing feruloyl-esterase degrades polyethylene terephthalate (PET)
This study identified the first archaeal enzyme capable of degrading PET plastic, characterizing its structure and biochemical properties. Expanding the diversity of organisms with PET-degrading enzymes could accelerate the development of biological strategies for breaking down the microplastics contaminating marine and terrestrial environments.
Bioprospecting for polyesterase activity relevant for PET degradation in marine Enterobacterales isolates
Researchers screened marine Enterobacterales isolates for polyesterase activity capable of degrading PET plastic, identifying bacterial strains from marine environments as candidates for bioremediation strategies targeting one of the world's most problematic plastic pollutants.
Isolation of a soil bacterium for remediation of polyurethane and low-density polyethylene: a promising tool towards sustainable cleanup of the environment.
A soil bacterium tentatively classified in the Pseudomonas genus was found to biodegrade both polyurethane and low-density polyethylene plastics. The discovery of a single bacterial strain capable of degrading two different types of plastic is a step toward developing practical microbial tools for plastic waste remediation.
Identification of BgP, a Cutinase-Like Polyesterase From a Deep-Sea Sponge-Derived Actinobacterium
Researchers identified BgP, a cutinase-like polyesterase enzyme from a deep-sea sponge-derived actinobacterium, which can hydrolyze synthetic polyesters including PET plastic, highlighting marine bacteria as a promising source of plastic-degrading enzymes.
Microbial enzymes for the recycling of recalcitrant petroleum‐based plastics: how far are we?
This review examines the progress in identifying microbial enzymes capable of breaking down petroleum-based plastics like polyethylene, polystyrene, polyurethane, and PET. Researchers highlight recent advances in using polyester-degrading enzymes to recover raw materials from PET waste through biocatalytic recycling. The study discusses the potential and remaining challenges of using biological approaches to address the growing global problem of plastic waste accumulation.
Evidence of Plastic Degrading Bacteria in Aquatic Environment
This review examines evidence for plastic-degrading bacteria in aquatic environments, summarizing identified microorganisms and their enzymatic mechanisms capable of breaking down plastic materials, and discussing the potential application of these organisms in bioremediation of plastic pollution.
Enrichment of native plastic‐associated biofilm communities to enhance polyester degrading activity
Researchers found that expanded polystyrene promotes high levels of bacterial biofilm formation and demonstrated that native plastic-associated microbial communities from environmental waste can be enriched to enhance polyester-degrading activity, offering potential for biological plastic remediation.
Microbial and Enzymatic Biodegradation of Polyurethane: From Depolymerization to Monomer Valorization
A review covered microbial and enzymatic degradation of polyurethane, summarizing the microorganisms and enzymes capable of breaking down this widely used plastic. Identifying effective biodegradation pathways is key to developing biological solutions for polyurethane waste management.
Characterization and engineering of plastic-degrading polyesterases jmPE13 and jmPE14 from Pseudomonas bacterium
Two new plastic-degrading polyesterases, jmPE13 and jmPE14, were characterized and engineered from Pseudomonas strains to improve their efficiency in hydrolyzing polyester plastics. The study aimed to develop higher-performance biocatalysts for the enzymatic upcycling of plastic waste.
Characterization and engineering of a plastic-degrading aromatic polyesterase
Researchers characterized and engineered an aromatic polyesterase enzyme capable of degrading plastic polymers, improving its activity through protein engineering and demonstrating its potential as a tool for biodegradation-based plastic cleanup.
Polyesterase activities in bacterial isolates from seaweed and sponges, with potential utility in polyethylene terephthalate plastic and nanoparticle hydrolysis
Researchers screened marine bacteria isolated from seaweed and sponges for polyesterase activity and identified lipolytic and polyesterolytic strains with potential utility for hydrolyzing polyethylene terephthalate (PET) plastics and PET nanoparticles. Streptomyces strains from sponges showed notable polyesterase activity relevant to biotechnological plastic degradation applications.
Marine PET Hydrolase (PET2): Assessment of Terephthalate- and Indole-Based Polyesters Depolymerization
Researchers characterized a marine enzyme (PET2) capable of breaking down PET plastic and related polyester materials under relatively mild conditions. Discovering and engineering enzymes that can degrade PET could help address the massive accumulation of PET microplastics in ocean environments.
A Novel Polyester Hydrolase From the Marine Bacterium Pseudomonas aestusnigri – Structural and Functional Insights
Researchers characterized a novel polyester hydrolase from the marine bacterium Pseudomonas aestusnigri and solved its crystal structure, finding the enzyme can degrade PET and other polyesters, offering new insights into marine plastic biodegradation mechanisms.
Plastic-Degrading Microbial Consortia from a Wastewater Treatment Plant
Researchers isolated bacteria from a wastewater treatment plant that can break down common plastics including polyethylene and polystyrene, some of the hardest plastics to recycle. The microbial communities worked together to degrade the plastics more effectively than individual bacterial strains. While biological plastic degradation is still slow compared to the scale of pollution, identifying these bacteria is a step toward developing biotechnology solutions for plastic waste cleanup.
An archaeal lid-containing feruloyl esterase degrades polyethylene terephthalate
Researchers identified the first known archaeal enzyme capable of degrading polyethylene terephthalate (PET), a major plastic pollutant found worldwide. The enzyme, called PET46, comes from a deep-sea archaeon and showed degradation activity on PET comparable to previously known bacterial enzymes. The study expands the known diversity of plastic-degrading enzymes and suggests that organisms from extreme environments may harbor useful tools for addressing plastic pollution.
Breakthrough in polyurethane bio-recycling: An efficient laccase-mediated system for the degradation of different types of polyurethanes
A laccase-mediated enzymatic system efficiently degraded multiple types of polyurethane plastics in aqueous solution at mild conditions, breaking polymer chains and reducing molecular weight within days, offering a green biotechnology approach to managing polyurethane waste that conventional recycling and chemical degradation struggle to address.
Biodegradation of PET by the membrane-anchored PET esterase from the marine bacterium Rhodococcus pyridinivorans P23
Researchers identified a membrane-anchored enzyme from the marine bacterium Rhodococcus pyridinivorans that can break down PET plastic. The enzyme, displayed on the cell's surface, not only depolymerizes PET but also hydrolyzes its breakdown products under acidic conditions. The study provides new insight into how marine microorganisms naturally biodegrade plastic pollution, which could inform future bioremediation strategies.
Structural, functional, and molecular docking analyses of microbial cutinase enzymes against polyurethane monomers
Researchers performed structural, functional, and molecular docking analyses of microbial cutinase enzymes against polyurethane monomers, identifying promising enzyme candidates for biodegradation of polyurethane plastic waste.