Biodegradation of microplastics derived from controlled release fertilizer coating: Selective microbial colonization and metabolism in plastisphere

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 920, P. 170978 - 170978

Published: Feb. 14, 2024

Language: Английский

---

Biodegradation of polyethylene terephthalate by Tenebrio molitor: Insights for polymer chain size, gut metabolome and host genes

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 465, P. 133446 - 133446

Published: Jan. 6, 2024

Language: Английский

---

Molecular-Weight-Dependent Degradation of Plastics: Deciphering Host–Microbiome Synergy Biodegradation of High-Purity Polypropylene Microplastics by Mealworms

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(15), P. 6647 - 6658

Published: April 2, 2024

The biodegradation of polypropylene (PP), a highly persistent nonhydrolyzable polymer, by Tenebrio molitor has been confirmed using commercial PP microplastics (MPs) (Mn 26.59 and Mw 187.12 kDa). This confirmation was based on the reduction mass, change in molecular weight (MW), positive Δδ13C residual PP. A MW-dependent mechanism investigated five high-purity MPs, classified into low (0.83 6.20 kDa), medium (50.40 108.0 high (575.0 kDa) MW categories to access impact depolymerization pattern associated gene expression gut bacteria larval host. larvae can depolymerize/biodegrade polymers with although consumption rate losses increased, survival rates declined increasing MW. is similar observations polystyrene (PS) polyethylene (PE), i.e., both Mn decreased after being fed PP, while and/or increased fed. microbiota exhibited specific associations, such as Kluyvera sp. Pediococcus for degradation, Acinetobacter Bacillus alongside three other metabolism. In host transcriptome, digestive enzymes plastic degradation-related bacterial were up-regulated feeding depending different MWs. T. defensive function degradation capability during plastics, showing relatively negative larvae.

Language: Английский

---

Radical innovation breakthroughs of biodegradation of plastics by insects: history, present and future perspectives

Frontiers of Environmental Science & Engineering, Journal Year: 2024, Volume and Issue: 18(6)

Published: April 30, 2024

Abstract Insects damaging and penetrating plastic packaged materials has been reported since the 1950s. Radical innovation breakthroughs of biodegradation have initiated discovery plastics by Tenebrio molitor larvae in 2015 followed Galleria mellonella 2017. Here we review updated studies on insect-mediated plastics. Plastic insect larvae, mainly some species darkling beetles (Tenebrionidae) pyralid moths (Pyralidae) is currently a highly active potentially transformative area research. Over past eight years, publications increased explosively, including discoveries ability different to biodegrade plastics, performance, contribution host microbiomes, impacts polymer types their physic-chemical properties, responsible enzymes secreted gut microbes. To date, almost all major polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), terephthalate (PET), polyurethane (PUR), polystyrene (PS) can be biodegraded T. ten other representing Tenebrionidae Pyralidae families. The processes are symbiotic reactions or performed synergistic efforts both gut-microbes rapidly depolymerize with hourly half-lives. digestive ezymens bioreagents screted insects play an essential role plasatic certain New research itself, transcriptomes, proteomes metabolomes evaluated mechanisms insects. We conclude this discussing future perspectives

Language: Английский

---

Bibliometric analysis of publications on biodegradation of plastics: Explosively emerging research over 70 years

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 428, P. 139423 - 139423

Published: Oct. 20, 2023

Language: Английский

---

Generation and Fate of Nanoplastics in the Intestine of Plastic-Degrading Insect (Tenebrio molitor Larvae) during Polystyrene Microplastic Biodegradation

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(23), P. 10368 - 10377

Published: May 30, 2024

The insect Tenebrio molitor exhibits ultrafast efficiency in biodegrading polystyrene (PS). However, the generation and fate of nanoplastics (NPs) intestine during plastic biodegradation remain unknown. In this study, we investigated PS microplastics (MPs) mediated by T. larvae over a 4-week period confirmed analyzing Δδ13C before after biotreatment (−28.37‰ versus −24.88‰) as an effective tool. ·OH radicals, primarily contributed gut microbiota, H2O2, produced host, both increased MP digestion. size distribution residual particles excrements fluctuated within micrometer ranges. NPs were detected but not excrements. At end Weeks 1, 2, 3, 4, concentrations tissues 3.778, 2.505, 2.087, 2.853 ng/lava, respectively, while glands quantified at 0.636, 0.284, 0.113 ng/lava eventually fell below detection limit. remained limit 5 6. This indicates that initially, generated entered glands, then declined gradually disappeared or possibly biodegraded Week associated with elevated plastic-degrading capacities larvae. Our findings unveil rapid synergistic larval host well NPs, providing new insights into risks invertebrate-mediated biodegradation.

Language: Английский

---

Using Insect Larvae and Their Microbiota for Plastic Degradation

Insects, Journal Year: 2025, Volume and Issue: 16(2), P. 165 - 165

Published: Feb. 5, 2025

Plastic pollution is one of the biggest current global threats to environment given that petroleum-based plastic recalcitrant and can stay in for decades, even centuries, depending on specific type. Since less than 10% all made recycled, other solutions (such as incineration or landfill storage) are pollutant methods, new, environmentally friendly needed. In this regard, latest biotechnological discovery topic capability insect larvae use polymers carbon feedstock. This present review describes most relevant information capable degrading plastic, mainly Galleria mellonella (Fabricius, 1798), Tenebrio molitor (Linnaeus, 1758), Zophobas atratus 1776), also adds new about commonly studied “plastivore” insects such termites. covers literature from very first work describing degradation by published 2014 way research available (till June 2024), focusing identification a wide variety plastic-degrading microorganisms isolated guts understanding potential molecular mechanisms take place. It discoveries, which include novel enzymes waxworm saliva.

Language: Английский

---

Unveiling Fragmentation of Plastic Particles during Biodegradation of Polystyrene and Polyethylene Foams in Mealworms: Highly Sensitive Detection and Digestive Modeling Prediction

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(40), P. 15099 - 15111

Published: Sept. 26, 2023

It remains unknown whether plastic-biodegrading macroinvertebrates generate microplastics (MPs) and nanoplastics (NPs) during the biodegradation of plastics. In this study, we utilized highly sensitive particle analyzers pyrolyzer-gas chromatography mass spectrometry (Py-GCMS) to investigate possibility generating MPs NPs in frass polystyrene (PS) low-density polyethylene (LDPE) foams by mealworms (Tenebrio molitor larvae). We also developed a digestive biofragmentation model predict unveil fragmentation process ingested The removed 77.3% PS 71.1% PE over 6-week test period. Biodegradation both polymers was verified increase δ13C signature residual plastics, changes molecular weights, formation new oxidative functional groups. accumulated due biofragmentation, with exhibiting maximum percentage number at 2.75 7.27 μm, respectively. Nevertheless, were not detected using laser light scattering sizer detection limit 10 nm Py-GCMS analysis. predicted that progressively size-reduced rapidly biodegraded, indicating shorter half-life smaller plastic particles have. This study allayed concerns regarding accumulation plastic-degrading provided critical insights into factors controlling MP NP generation macroinvertebrate-mediated biodegradation.

Language: Английский

---

Exposure Pathways and Toxicity of Microplastics in Terrestrial Insects

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(27), P. 11887 - 11900

Published: June 17, 2024

The detrimental effects of plastics on aquatic organisms, including those macroplastics, microplastics, and nanoplastics, have been well established. However, knowledge the interaction between terrestrial insects is limited. To develop effective strategies for mitigating impact plastic pollution ecosystems, it necessary to understand toxicity influencing factors ingestion by insects. An overview current regarding provided in this Review, are identified. pathways through which interact with plastics, can lead accumulation microplastic transfer higher trophic levels, also discussed using an a conceptual model. diverse impacts exposure discussed, challenges existing studies, such as limited focus certain types, Further research standardized methods sampling analysis crucial reliable research, long-term monitoring essential assess trends ecological ecosystems. mechanisms underlying these need be uncovered, their potential consequences insect populations ecosystems require evaluation.

Language: Английский

---

Anthraquinones-based photocatalysis: A comprehensive review

Environmental Science and Ecotechnology, Journal Year: 2024, Volume and Issue: 22, P. 100449 - 100449

Published: July 5, 2024

In recent years, there has been significant interest in photocatalytic technologies utilizing semiconductors and photosensitizers responsive to solar light, owing their potential for energy environmental applications. Current efforts are focused on enhancing existing photocatalysts developing new ones tailored uses. Anthraquinones (AQs) serve as redox-active electron transfer mediators photochemically active organic photosensitizers, effectively addressing common issues such low light utilization carrier separation efficiency found conventional semiconductors. AQs offer advantages abundant raw materials, controlled preparation, excellent capabilities, photosensitivity, with applications spanning the energy, medical, sectors. Despite utility, comprehensive reviews AQs-based systems contexts lacking. this review, we thoroughly describe photochemical properties of photocatalysis, particularly key challenges like clean production, antibacterial action, pollutant degradation. However, face limitations practical due electrical conductivity solubility-related secondary contamination. To mitigate these issues, design synthesis graphene-immobilized highlighted a solution enhance Additionally, future research directions proposed deepen understanding AQs' theoretical mechanisms provide wastewater treatment. This review aims facilitate mechanistic studies improve technologies.

Language: Английский

---