An experimental approach to understanding plastic leachate impacts on marine microorganisms DOI Creative Commons
Stefan D. M. Maday, Kim M. Handley, Grant L. Northcott

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Янв. 30, 2025

Abstract Plastics in the world’s oceans are exposed to diverse environmental stressors that fragment them, accelerating leaching of associated additives. The impact potentially toxic plastic degradation products and additives on marine microorganisms remains poorly understood. We assessed leachate microbial communities vitro by exposure one four leachates (from linear low-density polyethylene [LLPDE], polyamide-6 [or polycaprolactam; PA6], terephthalate [PET] polylactic acid [PLA]), prepared immersing plastics artificial seawater salts broth for three months at 80 °C. Microbial were then different leachates, noting lower concentrations leached from more inert types (LLDPE PET), as determined GC-MS. PLA-leachate differed significantly composition other plastic-leachate-exposed (PERMANOVA, P =0.001) 16S rRNA gene ITS region amplicon sequencing. Communities contained a higher proportion Proteobacteria, specifically Halomonas spp., previously reported degrade LDPE common plasticisers. Greater relative abundances Psathyrellaceae fungi also distinguished these those leachates. However, despite significant differences structure PLA-leachate, we found no difference transcripts with degradation. While biodegradable such PLA may persist shorter times environment than plastics, our study indicates greater consequences communities.

Язык: Английский

Plastic waste impact and biotechnology: Exploring polymer degradation, microbial role, and sustainable development implications DOI Creative Commons

Isra E. Gilani,

Sami Sayadi, Nabil Zouari

и другие.

Bioresource Technology Reports, Год журнала: 2023, Номер 24, С. 101606 - 101606

Опубликована: Авг. 28, 2023

The significant impact of plastic waste on ecosystems has raised concerns regarding its detrimental effects. This review examines the various types synthetic and degradable plastics explores physiochemical properties polymers during degradation. It delves into management waste, considering both abiotic biotic degradation mechanisms. Biotic degradation, including aerobic anaerobic pathways, is also examined, with a specific focus role microorganisms their enzymes in facilitating biodegradation. further biotechnological implications management, gene manipulation, genetic modification, potential biotechnology. emphasizes importance transitioning toward circular economy highlights alignment these efforts sustainable development goals (SDGs). Overall, this provides insights environment, mechanisms, discusses approaches practices aimed at addressing challenges posed by waste.

Язык: Английский

Процитировано

50
The escalated potential of the novel isolate Bacillus cereus NJD1 for effective biodegradation of LDPE films without pre-treatment DOI
Nithya Jayan,

Sinosh Skariyachan,

Denoj Sebastian

и другие.

Journal of Hazardous Materials, Год журнала: 2023, Номер 455, С. 131623 - 131623

Опубликована: Май 12, 2023

Язык: Английский

Процитировано

31
Degradation of low-density polyethylene by the bacterium Rhodococcus sp. C-2 isolated from seawater DOI Creative Commons
Zhen Rong,

Zhi-Hao Ding,

Yue‐Hong Wu

и другие.

The Science of The Total Environment, Год журнала: 2023, Номер 907, С. 167993 - 167993

Опубликована: Окт. 21, 2023

Low-density polyethylene (LDPE), which accounts for 20% of the global plastic production, is discharged in great quantities into ocean, threatening marine life and ecosystems. Marine microorganisms have previously been reported to degrade LDPE plastics; however, exploration strains enzymes that still limited. Here, an LDPE-degrading bacterium was isolated from seawater Changjiang Estuary, China identified as Rhodococcus sp. C-2, relative abundance dramatically enhanced during PE-degrading microbial enrichment. The strain C-2 exhibited degradation films, leading their morphological deterioration, reduced hydrophobicity tensile strength, weight loss, well formation oxygen-containing functional groups short-chain products. Sixteen bacterial potentially involved were screened using genomic, transcriptomic, product analyses. Thereinto, glutathione peroxidase GPx with exposed active sites catalyzed depolymerization cooperation its dissociated superoxide anion radicals. Furthermore, model involving multiple proposed. present study identifies a novel enzyme (PEase) bioremediation promotes understanding degradation.

Язык: Английский

Процитировано

29
The problem of polyethylene waste – recent attempts for its mitigation DOI Creative Commons
Gonçalo A. O. Tiago, António Mariquito, Susete Martins-Dias

и другие.

The Science of The Total Environment, Год журнала: 2023, Номер 892, С. 164629 - 164629

Опубликована: Июнь 5, 2023

For the past two decades, with increase in plastic consumption came a rise waste, bulk of it ending up landfills, incinerated, recycled or leaking into environment, especially aquatic ecosystems. Plastic waste poses significant environmental threat and wealth issue due to its non-biodegradability recalcitrant nature. Polyethylene (PE) remains one major utilized polymers different applications amid all other types because low production costs, simplistic nature prone be modified historically predominant researched material. Since common methods for disposal are troubled by limitations, there is growing need more appropriate environment friendly alternatives. This study highlights several ways that can used assist PE (bio)degradation mitigate impact. Biodegradation (microbiological activity driven) photodegradation (radiation most promising control. The shape material (powder, film, particles, etc.), composition medium, additives pH, temperature incubation exposure times contribute degradation efficiency. Moreover, radiation pretreatment enhance biodegradability PE, providing approach fighting pollution. paper relates results regarding studies followed weight loss analysis, surface morphology changes, oxidation degree (for photodegradation) mechanical properties assessment. All combined strategies very minimize polyethylene However, still long way go through. kinetics currently available biotic abiotic processes, complete mineralization thoroughly unseen.

Язык: Английский

Процитировано

24
A systematic review of the mechanisms underlying the interactions between microplastics and microorganism in the environment DOI
Xianliang Wu, Zhenming Zhang, Xuetao Guo

и другие.

TrAC Trends in Analytical Chemistry, Год журнала: 2024, Номер 172, С. 117543 - 117543

Опубликована: Фев. 2, 2024

Язык: Английский

Процитировано

12
Eco‐Friendly Solutions to Emerging Contaminants: Unveiling the Potential of Bioremediation in Tackling Microplastic Pollution in Water DOI
Ihsanullah Ihsanullah, Muhammad Tariq Khan, Md Faysal Hossain

и другие.

Advanced Sustainable Systems, Год журнала: 2024, Номер 8(11)

Опубликована: Июнь 19, 2024

Abstract Microplastics (MPs) are a class of emerging contaminants that have gained significant attention in recent years. The presence MPs the aquatic environment is reported to serious potential environmental and health impacts. Therefore, it essential develop efficient sustainable strategies for remediation from aqueous environment. Traditional techniques an limitations, including high costs production secondary pollutants. In this scenario, bioremediation offers several advantages has emerged as cost‐effective, eco‐friendly, strategy removal water. This article critically reviews progress applications different effects key factors such characteristics MPs, conditions, types microorganisms on elaborated detail. underlying mechanisms involved by also discussed comprehensively. Major technological challenges identified, recommendations future research provided. Despite challenges, promising approach can revolutionize MP process if major addressed.

Язык: Английский

Процитировано

11
Understanding challenges associated with plastic and bacterial approach toward plastic degradation DOI

Hemlata Sharma,

Deepesh Kumar Neelam

Journal of Basic Microbiology, Год журнала: 2022, Номер 63(3-4), С. 292 - 307

Опубликована: Дек. 5, 2022

Abstract Plastic is widely used in every sector due to its stability, durability, and low cost. The widespread use of plastic results the compilation waste environment. buildup such a vast volume garbage has emerged as primary cause environmental pollution, including air, land, water pollution. Plastics contain various harmful chemicals toxic substances that can leak adversely affect humans other organisms. Managing this much very challenging task; therefore, an appropriate technique needed address problem. Various methods are used, chemical, physical, biological, degrade waste. Bacterial degradation known be most effective for biodegradation approach overcome issue. Biodegradation played crucial role removing these polluting wastes more efficiently eco‐friendly. process involves variety bacteria, Acinetobacter baumannii , Bacillus weihenstephanensis Pseudomonas aeruginosa fluorescens Rhodococcus ruber so on. takes place through biochemical pathways, biodeterioration, biofragmentation, assimilation, mineralization. During biodegradation, bacteria produce enzymes like esterase, cutinase, laccase, lipase, others break down transform polymers into microbial biomass gases. This review aims explain how contribute breakdown plastic.

Язык: Английский

Процитировано

39
Characterization of plastic degrading bacteria isolated from sewage wastewater DOI Creative Commons
Shakir Ali, Abdul Rehman, Syed Zajif Hussain

и другие.

Saudi Journal of Biological Sciences, Год журнала: 2023, Номер 30(5), С. 103628 - 103628

Опубликована: Март 23, 2023

Plastic is a fundamental polymer used in routine life and disposed of sewage. It leads to microplastic pollution aquatic organisms, introducing it into the food chain affecting human health. In present study, samples were collected from sewage wastewater isolate bacteria that could potentially reduce plastic. The six incubated with plastic pieces minimal salt media for 120 days. After days, weight loss experiment showed SH5B SH6B degraded 25% chemical molecular characterization, these strains identified as Pseudomonas sp. aeruginosa SH6B. Fourier-transform infrared spectroscopy (FTIR) analysis peaks shifting, indicating bond stretching, bending, new formation. Gas Chromatography-Mass Spectrometry (GC-MS) revealed various compounds produced during degradation by bacterial strains. biodegradation potential makes an impending foundation green chemistry eradicate tough pollutants environment.

Язык: Английский

Процитировано

24
Call for biotechnological approach to degrade plastic in the era of COVID-19 pandemic DOI Creative Commons
Shakir Ali,

Dilara Abbas Bukhari,

Abdul Rehman

и другие.

Saudi Journal of Biological Sciences, Год журнала: 2023, Номер 30(3), С. 103583 - 103583

Опубликована: Фев. 2, 2023

Plastic pollution is a global issue and has become major concern since Coronavirus disease (COVID)-19. In developing nations, landfilling illegal waste disposal are typical ways to dispose of COVID-19-infected material. These technologies worsen plastic other human animal health problems. degrades in light heat, generating hazardous primary secondary micro-plastic. Certain bacteria can degrade artificial polymers using genes, enzymes, metabolic pathways. Microorganisms including petrochemical plastics slowly. High molecular weight, strong chemical bonds, excessive hydrophobicity reduce biodegradation. There not enough study on bacteria-plastic interactions. Synthetic biology, engineering, bioinformatics methods have been created biodegrade synthetic polymers. This review will focus how microorganisms' degrading capacity be increased recent biotechnological techniques.

Язык: Английский

Процитировано

21
Biodegradable plastics in Mediterranean coastal environments feature contrasting microbial succession DOI Creative Commons
Fons A. de Vogel, Maaike Goudriaan, Erik R. Zettler

и другие.

The Science of The Total Environment, Год журнала: 2024, Номер 928, С. 172288 - 172288

Опубликована: Апрель 8, 2024

Plastic pollution of the ocean is a top environmental concern. Biodegradable plastics present potential "solution" in combating accumulation plastic pollution, and their production currently increasing. While these polymers will contribute to future marine debris budget, very little known still about behavior biodegradable different natural environments. In this study, we molecularly profiled entire microbial communities on laboratory confirmed polybutylene sebacate-co-terephthalate (PBSeT) polyhydroxybutyrate (PHB) films, non-biodegradable conventional low-density polyethylene (LDPE) films that were incubated situ three coastal environments Mediterranean Sea. Samples from pelagic, benthic, eulittoral habitat taken at five timepoints during an incubation period 22 months. We assessed presence biodegrading bacterial fungal taxa contrasted them against previously published disintegration data polymers. Scanning electron microscopy imaging complemented our molecular data. Putative degraders occurred all environments, but there was no obvious "core" shared plastic-specific microbes. varied between polymers, predominantly selected for underlying communities. Observed patterns did not necessarily match community putative degraders.

Язык: Английский

Процитировано

9