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61,005 resultsShowing papers similar to Message in a Bottle: the Expression and Confirmation of ISF6_4831, a Polyethylene Terephthalate Hydrolase
ClearProcess development for PETase production and purification
Researchers developed a production and purification process for PETase, an enzyme capable of breaking down polyethylene terephthalate (PET) plastic biologically, as an alternative to inadequate mechanical and chemical recycling methods for mixed and contaminated PET waste. The study addresses the global plastic pollution crisis by advancing the scalability of enzymatic PET degradation as a sustainable recycling pathway.
Enzymatic Degradation of Polyethylene Terephthalate Plastics by Bacterial Curli Display PETase
Researchers engineered bacteria to display a PET-degrading enzyme on their surface, creating a reusable biocatalyst capable of breaking down polyethylene terephthalate plastics. The system worked under various conditions, remained stable for at least 30 days, and could even degrade PET microplastics in wastewater and highly crystalline consumer plastic waste. This biological approach offers a promising environmentally friendly alternative for plastic recycling and waste treatment.
Degradation of PET plastic with engineered environmental bacteria
Scientists engineered a soil bacterium to break down PET plastic, one of the most common plastics in food packaging and textiles, by giving it the ability to produce and secrete a powerful plastic-degrading enzyme. This is one of the first demonstrations of a living microorganism that can directly consume PET as a food source, which could lead to more sustainable recycling approaches.
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.
Enzymatic PET Degradation
This review examines enzymatic degradation of PET (polyethylene terephthalate), the plastic used in bottles and polyester clothing, as a promising pathway for breaking down this persistent polymer. Advances in engineering more efficient PET-degrading enzymes could enable industrial-scale biological recycling and reduce the environmental accumulation of PET microplastics.
Biodegradation of Poly(Ethylene Terephthalate) Microplastics by Baceterial Communities From Activated Sludge
Scientists isolated bacteria from wastewater treatment sludge that can biodegrade PET plastic, used in plastic bottles and food packaging. The bacteria broke down PET microplastics over a 60-day period, pointing toward a potential biological tool for removing plastic contamination from water treatment systems.
Biodegradation of Poly(Ethylene Terephthalate) Microplastics by Baceterial Communities From Activated Sludge
Scientists isolated bacteria from wastewater treatment sludge that can biodegrade PET plastic, used in plastic bottles and food packaging. The bacteria broke down PET microplastics over a 60-day period, pointing toward a potential biological tool for removing plastic contamination from water treatment systems.
Eco-Microbiology: Discovering Biochemical Enhancers of PET Biodegradation by Piscinibacter sakaiensis
This paper reviews biochemical strategies for enhancing PET biodegradation by microorganisms, focusing on the discovery and engineering of plastic-degrading enzymes. The review highlights recent advances and remaining challenges in scaling up enzymatic plastic degradation for industrial applications.
Discovery and rational engineering of PET hydrolase with both mesophilic and thermophilic PET hydrolase properties
Researchers discovered a new enzyme from a soil bacterium that can break down PET plastic — the material in most plastic bottles — at both room temperature and elevated heat, then engineered an improved version that degrades PET powder almost completely within half a day at 55°C. This dual-temperature capability makes it more practical than existing enzymes for industrial-scale plastic recycling and could help address the global PET waste problem.
Explorations of Polyethylene Terephthalate (PET) Hydrolase for addressing PET Plastic Pollution
This review explores the biology of PETase enzymes and their potential for addressing PET plastic pollution, covering the discovery of Ideonella sakaiensis and subsequent enzyme engineering efforts. Developing efficient PET-degrading enzymes is a promising biotechnological strategy for reducing plastic pollution at scale.
Biểu hiện, tinh sạch và đánh giá sơ bộ hoạt tính phân hủy nhựa PET của enzyme PETase tái tổ hợp
Vietnamese researchers successfully expressed and purified recombinant PETase enzyme — which breaks down PET plastic — finding optimal expression conditions and that adding glycerol and DTT enhanced its plastic-degrading activity. This is directly relevant to microplastic research as PETase-based biodegradation is a promising biological approach to reducing PET plastic waste and microplastic generation.
Current Knowledge on Polyethylene Terephthalate Degradation by Genetically Modified Microorganisms
This review covers genetically modified microorganisms engineered to degrade polyethylene terephthalate, examining how bioengineering of enzymes such as PETase and enhanced expression systems can overcome the low biodegradation rates of wild-type microorganisms toward this ubiquitous plastic.
Engineered polyethylene terephthalate hydrolases: perspectives and limits
This review examines progress in engineering enzymes that can break down PET plastic, the material used in most beverage bottles and synthetic textiles. Researchers found that while significant advances have been made through protein engineering and machine learning, no enzyme yet exists that can efficiently degrade the crystalline form of PET found in real-world waste. The study outlines the key challenges remaining before enzymatic plastic recycling can work at industrial scale, including handling microplastic contamination.
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.
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.
Examining and identifying bacteria-mediated polyethylene terephthalate bottle waste degradation Byprops
Researchers isolated Bacillus subtilis from PET plastic waste dump sites and demonstrated that the bacterium can degrade polyethylene terephthalate microplastics over six months, with UV-pretreated PET showing the most pronounced changes including new alkyl aryl ether and alkene groups detected by FTIR and GC-MS. The findings suggest soil bacteria could offer a biodegradable solution for eliminating PET from plastic-contaminated sites.
Using a marine microalga as a chassis for polyethylene terephthalate (PET) degradation
Researchers genetically engineered a marine microalgae to produce enzymes that break down PET plastic (the kind used in bottles and synthetic fibers), demonstrating for the first time that a saltwater microalgae can be used as a biological platform for PET degradation. This proof-of-concept points toward eco-friendly, ocean-based solutions for tackling plastic pollution at its source.
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.
Development of a yeast whole-cell biocatalyst for MHET conversion into terephthalic acid and ethylene glycol
Researchers engineered baker's yeast to display plastic-degrading enzymes on its cell surface, demonstrating a simpler and potentially cheaper approach to breaking down PET plastic — the material used in bottles — without requiring the costly step of purifying the enzymes first.
Perspectives on the Role of Enzymatic Biocatalysis for the Degradation of Plastic PET
This review discusses the role of enzymatic biocatalysis in PET plastic degradation, examining how the discovery of PETase and subsequent enzyme engineering have advanced biodegradation as an alternative to chemical and mechanical recycling for one of the most produced plastics globally.
Degradation of polyethylene terephthalate (PET) plastics by wastewater bacteria engineered via conjugation
Scientists engineered wastewater bacteria to break down PET plastic, one of the most common microplastic types, by transferring plastic-degrading genes through a natural DNA-sharing process. The modified bacteria could partially degrade a consumer PET product in 5 to 7 days. This proof-of-concept approach could help reduce the amount of microplastics released from wastewater treatment plants into the environment.
Enzymatic Remediation of Polyethylene Terephthalate (PET)–Based Polymers for Effective Management of Plastic Wastes: An Overview
Enzymatic approaches for remediating PET-based plastic waste were reviewed, covering PETase and related enzymes that can break PET into reusable monomers. Enzyme engineering strategies to improve thermostability and catalytic efficiency are discussed as a pathway to scalable biological PET recycling.
Genes for a Circular and Sustainable Bio-PET Economy
This review examines the genetics of enzymes that can biodegrade PET plastic, exploring how genetic engineering could accelerate the development of organisms capable of breaking down plastic waste. Enzymatic degradation of PET could help address plastic pollution including plastic bottles that break down into microplastics.
An Overview into Polyethylene Terephthalate (PET) Hydrolases and Efforts in Tailoring Enzymes for Improved Plastic Degradation
This review examines the discovery and engineering of PET-degrading enzymes including PETase and cutinase variants, discussing protein engineering strategies to improve catalytic efficiency and thermostability for practical biodegradation of polyethylene terephthalate plastic waste.