Fungal Enzymes Involved in Plastics Biodegradation

Microorganisms, Journal Year: 2022, Volume and Issue: 10(6), P. 1180 - 1180

Published: June 8, 2022

Plastic pollution is a growing environmental problem, in part due to the extremely stable and durable nature of this polymer. As recycling does not provide complete solution, research has been focusing on alternative ways degrading plastic. Fungi wide array enzymes specialized degradation recalcitrant substances are very promising candidates field plastic degradation. This review examines present literature for different fungal involved degradation, describing their characteristics, efficacy biotechnological applications. Fungal laccases peroxidases, generally used by fungi degrade lignin, show good results polyethylene (PE) polyvinyl chloride (PVC), while esterases such as cutinases lipases were successfully terephthalate (PET) polyurethane (PUR). Good also obtained PUR proteases ureases. All these isolated from many fungi, both

Language: Английский

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Exploitation of lignocellulosic-based biomass biorefinery: A critical review of renewable bioresource, sustainability and economic views

Biotechnology Advances, Journal Year: 2023, Volume and Issue: 69, P. 108265 - 108265

Published: Oct. 1, 2023

Language: Английский

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Insights into the mechanisms involved in the fungal degradation of plastics

Ecotoxicology and Environmental Safety, Journal Year: 2023, Volume and Issue: 262, P. 115202 - 115202

Published: June 29, 2023

Fungi are considered among the most efficient microbial degraders of plastics, as they produce salient enzymes and can survive on recalcitrant compounds with limited nutrients. In recent years, studies have reported numerous species fungi that degrade different types yet there remain many gaps in our understanding processes involved biodegradation. addition, unknowns need to be resolved regarding fungal responsible for plastic fragmentation regulatory mechanisms which use hydrolyse, assimilate mineralize synthetic plastics. This review aims detail main methods used hydrolysis by fungi, key enzymatic molecular mechanisms, chemical agents enhance breakdown viable industrial applications. Considering polymers such lignin, bioplastics, phenolics, other petroleum-based exhibit closely related characteristics terms hydrophobicity structure, degraded similar we reasoned genes been regulate biodegradation these or their homologs could equally regulation degrading fungi. Thus, this highlights provides insight into some likely target enzymes, genes, transcription factors process, well limitations upscaling biological approaches employed overcome challenges.

Language: Английский

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Insights into characteristics of white rot fungus during environmental plastics adhesion and degradation mechanism of plastics

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 448, P. 130878 - 130878

Published: Jan. 26, 2023

Language: Английский

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A critical review of microplastics in aquatic ecosystems: Degradation mechanisms and removing strategies

Environmental Science and Ecotechnology, Journal Year: 2024, Volume and Issue: 21, P. 100427 - 100427

Published: April 25, 2024

Plastic waste discarded into aquatic environments gradually degrades smaller fragments, known as microplastics (MPs), which range in size from 0.05 to 5 mm. The ubiquity of MPs poses a significant threat ecosystems and, by extension, human health, these particles are ingested various marine organisms including zooplankton, crustaceans, and fish, eventually entering the food chain. This contamination threatens entire ecological balance, encompassing safety health systems. Consequently, developing effective MP removal technologies has emerged critical area research. Here, we summarize mechanisms recently reported strategies for removing ecosystems. Strategies combining physical chemical pretreatments with microbial degradation have shown promise decomposing MPs. Microorganisms such bacteria, fungi, algae, specific enzymes being leveraged remediation efforts. Recent advancements focused on innovative methods membrane bioreactors, synthetic biology, organosilane-based techniques, biofilm-mediated remediation, nanomaterial-enabled strategies, nano-enabled demonstrating substantial potential enhance efficiency. review aims stimulate further innovation methods, promoting environmental social well-being.

Language: Английский

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Closing the Carbon Loop in the Circular Plastics Economy

Macromolecular Rapid Communications, Journal Year: 2022, Volume and Issue: 43(13)

Published: May 30, 2022

Today, plastics are ubiquitous in everyday life, problem solvers of modern technologies, and crucial for sustainable development. Yet the surge global demand growing world population has triggered a tidal wave plastic debris environment. Moving from linear to zero-waste carbon-neutral circular economy is vital future planet. Taming waste flood requires closing carbon loop through reuse, mechanical molecular recycling, capture, use greenhouse gas dioxide. In quest eco-friendly products, do not need be reinvented but tuned reuse recycling. Their full potential must exploited regarding energy, resource, eco-efficiency, prevention, economy, climate change mitigation, lowering environmental pollution. Biodegradation holds promise composting bio-feedstock recovery, it neither Holy Grail nor panacea littering. As an alternative downcycling, recycling enables both closed-loop recovery virgin open-loop valorization, producing hydrogen, fuels, refinery feeds, lubricants, chemicals, carbonaceous materials. Closing does create Perpetuum Mobile renewable energy achieve sustainability.

Language: Английский

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The plastisphere microbiome in alpine soils alters the microbial genetic potential for plastic degradation and biogeochemical cycling

Journal of Hazardous Materials, Journal Year: 2022, Volume and Issue: 441, P. 129941 - 129941

Published: Sept. 14, 2022

Plastic is exceedingly abundant in soils, but little known about its ecological consequences for soil microbiome functioning. Here we report the impacts of polyethylene and biodegradable Ecovio BI-OPL plastic films buried alpine soils 5 months on genetic potential using shotgun metagenomics. The was more affected by than polyethylene. Fungi, α- β-Proteobacteria dominated films. showed signs degradation after incubation, whereas did not. Genes involved cellular processes signaling (intracellular trafficking, secretion, vesicular transport), as well metabolism (carbohydrate, lipid secondary metabolism), were enriched plastisphere. Several α/β-hydrolase gene families (cutinase_like, polyesterase-lipase-cutinase, carboxylesterase), which encode enzymes essential to degradation, carbohydrate-active genes lignin murein increased Enriched nitrogen fixation organic N synthesis decreased nitrification altered biogeochemical cycling, leading higher ammonium concentrations depletion nitrite nitrate soil. Our results indicate that plastics affect functions suggest plastisphere has an untapped microbial biodegradation.

Language: Английский

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Biodegradation of polyester polyurethane by Cladosporium sp. P7: Evaluating its degradation capacity and metabolic pathways

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 448, P. 130776 - 130776

Published: Jan. 11, 2023

Language: Английский

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Development of plastic-degrading microbial consortia by induced selection in microcosms

Frontiers in Microbiology, Journal Year: 2023, Volume and Issue: 14

Published: April 11, 2023

The increase in the production of highly recalcitrant plastic materials, and their accumulation ecosystems, generates need to investigate new sustainable strategies reduce this type pollution. Based on recent works, use microbial consortia could contribute improving biodegradation performance. This work deals with selection characterization plastic-degrading using a sequential induced enrichment technique from artificially contaminated microcosms. microcosm consisted soil sample which LLDPE (linear low-density polyethylene) was buried. Consortia were obtained initial by culture medium LLDPE-type material (in film or powder format) as sole carbon source. Enrichment cultures incubated for 105 days monthly transfer fresh medium. abundance diversity total bacteria fungi monitored. Like LLDPE, lignin is very complex polymer, so its closely linked that some plastics. For reason, counting ligninolytic microorganisms different enrichments also performed. Additionally, consortium members isolated, molecularly identified enzymatically characterized. results revealed loss at each end process. selected selective form more effective compared form, resulting reduction microplastic weight between 2.5 5.5%. Some showed wide range enzymatic activities related degradation polymers, Pseudomonas aeruginosa REBP5 alloputida REBP7 strains standing out. Castellaniella denitrificans REBF6 Debaryomyces hansenii RELF8 considered relevant although they discrete profiles. Other collaborate prior additives accompanying facilitating subsequent access other real degraders structure. Although preliminary, current knowledge plastics anthropogenic origin accumulated natural environments.

Language: Английский

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Soil Bioplastic Mulches for Agroecosystem Sustainability: A Comprehensive Review

Agriculture, Journal Year: 2023, Volume and Issue: 13(1), P. 197 - 197

Published: Jan. 12, 2023

The use of plastic mulch films is widespread in agriculture for specialty cropping systems because several benefits. In this article, we critically review, the first time under a holistic approach, biodegradable mulches (BdPMs) soil as sustainable alternative to conventional petroleum-based plastics, highlighting current state understanding their degradation and effect on microorganisms, weed control, properties. addition, provide detailed focus history economic importance mulching. BdPMs are effective vegetable production that they improve physical, chemical, biological properties, well enhancing microbial biodiversity, controlling weeds, maintaining moisture. could be useful limit agrochemicals reduce tillage irrigation supplies management.

Language: Английский

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