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Characterization of Newly Discovered Polyester Polyurethane‐Degrading Methylobacterium aquaticum Strain A1
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Researchers characterize Methylobacterium aquaticum strain A1, a newly identified bacterium capable of degrading polyester polyurethane through inducible esterase and protease enzymes, suggesting its potential as a biocatalyst for plastic biodegradation.
In this study, we present Methylobacterium aquaticum A1, a novel strain capable of degrading polyester polyurethane (PE-PUR). The attachment of M. aquaticum A1 to PE-PUR and its degradation capabilities were verified using Scanning Electron Microscopy (SEM) and Fourier-Transform Infrared Spectroscopy (FT-IR). Analysis of the reference genome of M. aquaticum revealed genes encoding enzymes with potential PE-PUR degrading activity, including esterases, lipase, proteases and amidase such as tesA, pgpB, aes, aprE, lon, degQ, and gatA. An esterase activity assay using p-nitrophenyl acetate (p-NPA) showed increased ester bond-cleaving activity when M. aquaticum A1 was exposed to polyurethane diol (PU-diol), suggesting inducible enzymatic activity involved in PE-PUR degradation. These findings highlight the potential of M. aquaticum A1 as a promising biocatalyst for PE-PUR degradation.
More Papers Like This
Characterization of Newly Discovered Polyester Polyurethane-degrading Methylobacterium Aquaticum Strain A1
AI summary Read the abstract
Researchers characterized Methylobacterium aquaticum A1, a newly isolated strain capable of adhering to and degrading polyester polyurethane (PE-PUR), confirmed by SEM and FTIR analysis. Genomic analysis identified candidate degradation enzymes including esterases, lipases, proteases, and amidase, and esterase activity assays showed inducible enzymatic activity when the strain was exposed to polyurethane diol, highlighting its potential as a plastic-biodegrading biocatalyst.
Isolation, Identification, and Characterization of Novel Environmental Bacteria with Polyurethane-Degrading Activity
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Researchers isolated 31 bacterial strains from waste sites and identified 12 genera capable of degrading polyurethane, including several genera not previously reported as plastic biodegraders such as Priesta, Dermacoccus, and Gordonia, with the most efficient strains breaking down over 90% of the substrate through protease, urease, and esterase activity.
A marine bacterial strain with polyurethane-degrading activity, a potential for plastic waste control in the oceans
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This study investigated the deep-sea bacterium Stutzerimonas frequens GOM2 for polyurethane (PU) biodegradation potential, finding it could grow and produce clearance halos in functional screenings with water-based polyester-PU dispersions and successfully reversed the embryonic lethality of Impranil in zebrafish via PU biodegradation. GC-MS analysis identified metabolic intermediates including plastic and bioplastic precursors and pharmaceutically relevant compounds, with genomic analyses confirming plastic degradation genes and nonpathogenic status.
Biodegradation of poly(ester‐urethane) coatings by Halopseudomonas formosensis
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Researchers isolated a bacterium, Halopseudomonas formosensis, capable of breaking down poly(ester-urethane) textile coatings as its sole carbon source, and identified a key enzyme responsible for degrading both the coating material and PET, providing new insights into microbial degradation of complex coated plastics.
Identification of Cutinolytic Esterase from Microplastic-Associated Microbiota Using Functional Metagenomics and Its Plastic Degrading Potential
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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.
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