Bioplastics for a circular economy

Nature Reviews Materials, Journal Year: 2022, Volume and Issue: 7(2), P. 117 - 137

Published: Jan. 20, 2022

Language: Английский

---

Machine learning-aided engineering of hydrolases for PET depolymerization

Nature, Journal Year: 2022, Volume and Issue: 604(7907), P. 662 - 667

Published: April 27, 2022

Language: Английский

---

Plastics in the Earth system

Science, Journal Year: 2021, Volume and Issue: 373(6550), P. 51 - 55

Published: July 1, 2021

Plastic contamination of the environment is a global problem whose magnitude justifies consideration plastics as emergent geomaterials with chemistries not previously seen in Earth's history. At elemental level, are predominantly carbon. The comparison plastic stocks and fluxes to those carbon reveals that quantities present some ecosystems rival quantity natural organic suggests geochemists should now consider their analyses. Acknowledging adopting geochemical insights methods can expedite our understanding Earth system. Plastics also be used global-scale tracers advance system science.

Language: Английский

---

Degradation of conventional plastic wastes in the environment: A review on current status of knowledge and future perspectives of disposal

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 771, P. 144719 - 144719

Published: Jan. 21, 2021

Language: Английский

---

Catalytic processing of plastic waste on the rise

Chem, Journal Year: 2021, Volume and Issue: 7(6), P. 1487 - 1533

Published: Jan. 10, 2021

Language: Английский

---

Biorefinery roadmap based on catalytic production and upgrading 5-hydroxymethylfurfural

Green Chemistry, Journal Year: 2020, Volume and Issue: 23(1), P. 119 - 231

Published: Nov. 12, 2020

This review presents a comprehensive roadmap for the production of HMF from biomass and upgradation toward fuels, chemicals materials.

Language: Английский

---

A unified view on catalytic conversion of biomass and waste plastics

Nature Reviews Chemistry, Journal Year: 2022, Volume and Issue: 6(9), P. 635 - 652

Published: Aug. 11, 2022

Language: Английский

---

Enzymes’ Power for Plastics Degradation

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(9), P. 5612 - 5701

Published: March 14, 2023

Plastics are everywhere in our modern way of living, and their production keeps increasing every year, causing major environmental concerns. Nowadays, the end-of-life management involves accumulation landfills, incineration, recycling to a lower extent. This ecological threat environment is inspiring alternative bio-based solutions for plastic waste treatment toward circular economy. Over past decade, considerable efforts have been made degrade commodity plastics using biocatalytic approaches. Here, we provide comprehensive review on recent advances enzyme-based biocatalysis design related processes recycle or upcycle plastics, including polyesters, polyamides, polyurethanes, polyolefins. We also discuss scope limitations, challenges, opportunities this field research. An important message from that polymer-assimilating enzymes very likely part solution reaching

Language: Английский

---

Enzyme discovery and engineering for sustainable plastic recycling

Trends in biotechnology, Journal Year: 2021, Volume and Issue: 40(1), P. 22 - 37

Published: March 3, 2021

Biocatalytic depolymerization mediated by enzymes has emerged as an efficient and sustainable alternative for plastic treatment recycling, which aims to reduce adverse environmental effects recover valuable components from waste.Metagenomic proteomic approaches can be harnessed powerful tools in mining capable of a wide variety environments ecosystems.Plastic-degrading optimized protein engineering improved performance, including enhancement enzyme thermostability, reinforcement the binding substrate active site, interaction between surface, refinement catalytic capacity. The drastically increasing amount waste is causing crisis that requires innovative technologies recycling post-consumer plastics achieve valorization while meeting quality goals. recycling. A plastic-degrading have been discovered microbial sources. Meanwhile, exploited modify optimize enzymes. This review highlights recent trends up-to-date advances novel through state-of-the-art omics-based techniques improving efficiency stability via various strategies. Future research prospects challenges are also discussed. Plastic materials play revolutionary role modern world, although enormous manufacture extensive use commodities inevitably generate extraordinary waste. Around 12 000 million metric tons predicted accumulate landfills natural environment 2050 [1.Geyer R. et al.Production, use, fate all ever made.Sci. Adv. 2017; 3e1700782Crossref PubMed Scopus (3209) Google Scholar]. Improper handling caused grand challenge. debris waste, especially microplastics (see Glossary), impose hazardous on organisms eventually threaten human well-being [2.Redondo-Hasselerharm P.E. al.Nano- affect composition freshwater benthic communities long term.Sci. 2020; 6eaay4054Crossref (14) Scholar, 3.Koelmans A.A. al.Microplastics freshwaters drinking water: critical assessment data quality.Water Res. 2019; 155: 410-422Crossref (256) 4.Seeley M.E. sedimentary nitrogen cycling.Nat. Commun. 11: 2372Crossref (27) 5.Boots B. al.Effects soil ecosystems: above below ground.Environ. Sci. Technol. 53: 11496-11506Crossref (63) In addition, degradation resistance further escalates their impacts [6.Chamas A. al.Degradation rates environment.ACS Sustain. Chem. Eng. 8: 3494-3511Crossref (230) Therefore, it urgent develop plastics, both protection. Enzymatic biocatalysis gained attention eco-friendly conventional methods (Box 1) [7.Wei al.Possibilities limitations biotechnological recycling.Nat. Catal. 3: 867-871Crossref To date, discovered, representing promising biocatalyst candidates depolymerization. Considering ubiquity different ecosystems tremendous metabolic genetic diversity microorganisms, habitats likely evolved capabilities decomposition utilization. identified so far might only account small portion relevant environment. ever-growing interest explore diverse discover new with desirable properties functionalities. However, naturally occurring not well suited synthetic industrial applications due poor thermostability low activity. Particularly, usually possess distinct physical chemical (e.g., high crystallinity) render them more resistant enzymatic attack than biogenic polymers. increasingly utilized construct better stability. Recent efforts made significant discovering enzymes, showing great promise progress discovery using optimization article timely provides holistic view current stage emerging obtaining effective biocatalysts degradation, will inspire future address Metagenomics demonstrated potential facilitate ecological habitats. culture-dependent method applied most known [8.Satti S.M. Shah Polyester-based biodegradable plastics: approach towards development.Lett. Appl. Microbiol. 70: 413-430Crossref (3) Scholar,9.Wierckx N. al.Plastic biodegradation: opportunities.in: Steffan Consequences Microbial Interactions Hydrocarbons, Oils, Lipids: Biodegradation Bioremediation. Springer International Publishing, 2018: 1-29Crossref method, microorganisms expressing desired first enriched isolated under proper cultivation conditions, followed strain taxonomical classification, identification putative molecular biological or computational (Figure 1A ) [10.Kawai F. al.A Ca2+-activated, thermostabilized polyesterase hydrolyzing polyethylene terephthalate Saccharomonospora viridis AHK190.Appl. Biotechnol. 2014; 98: 10053-10064Crossref (112) 11.Taniguchi I. al.Biodegradation PET: status application aspects.ACS 9: 4089-4105Crossref (106) 12.Yoshida S. bacterium degrades assimilates poly(ethylene terephthalate).Science. 2016; 351: 1196-1199Crossref (705) seriously limits scope finding because estimated less 1% total planet cultured. By contrast, culture-independent metagenomic tool vast majority As summarized Table 1, many genes encoding depolymerizing retrieved wealth metagenome samples. this section we discuss deciphering huge reservoir techniques. overall workflow metagenomics illustrated Figure 1B. Among these steps, selecting appropriate screening pivotal mining. Generally, there two commonly used screen library, sequence-based function-based [13.Ufarte L. al.Metagenomics pollutant degrading enzymes.Biotechnol. 2015; 33: 1845-1854Crossref (0) Scholar,14.Sankara Subramanian S.H. al.RemeDB: rapid prediction involved bioremediation high-throughput sets.J. Comput. Biol. 27: 1020-1029Crossref (2) Sequence-based takes advantage sequence similarity comparison functional gene annotation searching bioinformatic databases [14.Sankara For example, terephthalate) (PET) hydrolytic (PET2) was uncovered silico search algorithm powered hidden Markov model [15.Danso D. al.New insights into function global distribution (PET)-degrading bacteria marine terrestrial metagenomes.Appl. Environ. 2018; 84: e02773-e02817Crossref (50) More recently, number sequences similar ones activity degrade polyurethane (PU) were landfill-derived metagenomes [16.Gaytan recalcitrant xenobiotic additives selected landfill community its biodegradative revealed proximity lgation-based analysis.Front. 10: 2986Crossref (8) relatively cost-effective success limited size could miss families previously characterized ones. similarities do guarantee activity, characterization validation functionality needed [17.Muller C.A. al.Discovery polyesterases moss-associated microorganisms.Appl. 83: e02641-e02716Crossref Alternatively, uses assays phenotypes libraries 1B). particularly advantageous over screening, completely groups divergent existing homologous multiple phylogenetically belonging entirely esterase screened agar plate assays, exhibited polyesters, poly(lactic acid) (PLA), poly(ε-caprolactone) (PCL), poly(butylene succinate-co-adipate) (PBSA) [18.Hajighasemi M. al.Screening against polyesters.Environ. 52: 12388-12401Crossref (11) Scholar] (Table 1). Traditional capability large-sized libraries. studies developing accelerate microbes [19.Weinberger al.High throughput fungal polyester enzymes.Front. 554Crossref Scholar,20.Bunzel H.A. al.Speeding up ultrahigh-throughput methods.Curr. Opin. Struct. 48: 149-156Crossref (54) When approach, important select host cell constructing heterologous expression level library representativeness. Escherichia coli widely convenient manipulation [21.Lorenz P. Eck J. applications.Nat. Rev. 2005; 510-516Crossref (370) systems employed ensure expression. instance, eukaryotic cells, such yeast Pichia pastoris, disulfide bonds, they unsuitably expressed common E. [22.Fecker T. al.Active site flexibility hallmark PET sakaiensis PETase.Biophys. 114: 1302-1312Abstract Full Text PDF (84) 23.Urbanek A.K. al.Biochemical polyester-type plastics.Biochim. Biophys. Acta Proteins Proteom. 1868140315Crossref (13) 24.Chen al.Contribution bond Thermobifida fusca cutinase.Food Biosci. 6-10Crossref It type successful screening. chosen determined factors; coverage. Due short length insert plasmid harbor, plasmid-based large but coverage, unfavorable longer DNA fragments inserted phage fosmid Moreover, phage-based some toxic target concomitant lysis cells directly plaques. Besides methods, sampling sources determining discovery. Most investigated showed hit rate related 1), major challenge analysis worldwide broad extremely frequency indicating slow evolution indigenous utilize anthropogenic likelihood greater abundant biopolymeric substances. thermostable cutinase homologue, leaf branch compost (LCC), PCL leaf-branch copious plant-derived polymers [25.Sulaiman al.Isolation homolog terephthalate-degrading approach.Appl. 2012; 78: 1556-1562Crossref (155) Likewise, esterases poly(diethylene glycol adipate) (poly DEGA) copolyester adipate-co-terephthalate) (PBAT) constructed Sphagnum moss, respectively Scholar,26.Kang C.H. family VII library.Microb. Cell Factories. 2011; 41Crossref (38) plastisphere source compounds survival growth [27.Roager Sonnenschein E.C. Bacterial colonization debris.Environ. 11636-11643Crossref (25) 28.Jacquin al.Microbial ecotoxicology debris: biodegradation ‘plastisphere.Front. 865Crossref 29.Amaral-Zettler L.A. al.Ecology plastisphere.Nat. 18: 139-151Crossref currently underexplored growing Techniques targeted stable-isotope probing (SIP) helpful increase Targeted stimulate presence functions before extraction, situ habitat. pre-incubation native activated prevalence species raised [30.Mayumi al.Identification poly(DL-lactic depolymerases metagenome.Appl. 2008; 79: 743-775Crossref (34) Additionally, SIP technique integrated [31.Coyotzi al.Targeted populations probing.Curr. 41: 1-8Crossref (39) Scholar,32.Chen Y. Murrell J.C. meets probing: perspectives.Trends 2010; 157-163Abstract Recently, 13C-labeled developed [33.Sander al.Assessing transformation nanoplastic 13C-labelled polymers.Nat. Nanotechnol. 14: 301-303Crossref (7) Scholar,34.Zumstein M.T. soils: tracking carbon CO2 biomass.Sci. 4eaas9024Crossref (52) Using would help pinpoint participating processes. proteomics-based detects quantifies proven repertoire [35.Bers K. hydrolase genomic-proteomic phenylurea herbicide mineralization Variovorax sp. SRS16.Appl. 77: 8754-8764Crossref (48) Scholar,36.Sturmberger al.Synergism proteomics mRNA sequencing discovery.J. 235: 132-138Crossref (9) 1C shows First, pure consortia grown without substrate, differentially induce express produced cultures extracted digested peptides, subjected sequencing, analysis. Typically, exoproteome principal when insoluble unable enter engaged secreted extracellularly [23.Urbanek effectiveness already identifying plant biopolymer inspiring implementation [37.Schneider al.Proteome bacterial involvement litter decomposition.Proteomics. 1819-1830Crossref (64) Comparative frequently based presumption incubation comparatively analyzing Pseudomonas pseudoalcaligenes fungus Knufia chersonesos, several PBAT identified, demonstrating unavailable annotated genomic [38.Tesei al.Shotgun reveals secretome rock-inhabiting chersonesos.Sci. Rep. 9770Crossref (1) Scholar,39.Wallace P.W. al.PpEst pseudoalcaligenes.Appl. 101: 2291-2303Crossref (16) another study, polyhydroxybutyrate (PHB) depolymerase ALC24_4107 Alcanivorax 24 comparative exoproteomic [40.Zadjelovic V. al.Beyond oil degradation: 22: 1356-1369Crossref Proteomics-guided still infancy, reported conducted cultures. Direct metaproteomics complex samples challenging, difficulty high-quality extraction availability downstream [41.Biswas Sarkar ‘Omics’ microbiology: state art.in: Adhya T.K. Advances Soil Microbiology: Trends Prospects. Singapore, 35-64Crossref Leveraging improve performance recently topic. Protein categories general; rational design directed evolution. Rational modifies knowledge structure mechanistic characteristics, simulation, modeling. Almost reports available structural information lack main barrier attempt far, employing direct engineer PHB Ralstonia pickettii T1, failed acquire any variant [42.Tan L.T. al.Directed poly[(R)-3-hydroxybutyrate] surface display system: importance asparagine at position 285.Appl. 2013; 97: 4859-4871Crossref focus discussing strategies 2 examples 2. Thermostability highly depolymerization, glass transition temperature (Tg) ~65–70°C PET). reaction gets close Tg polymeric chains considerably increased mobility, facilitating accessibility [43.Wei Zimmermann W. petroleum-based how we?.Microb. 1308-1322Crossref (208) one bottleneck practical applications. Inspired unique features thermophilic proteins, designed detailed later. Introduction bonds salt bridges beneficial 2A) [44.Rigoldi al.Review: applications.APL Bioeng. 2011501Crossref 45.Son H.F. al.Structural bioinformatics-based thermo-stable PETase Ideonella sakaiensis.Enzym. Microb. 141109656Crossref 46.Oda al.Enzymatic hydrolysis roles three Ca2+ ions bound cutinase-like enzyme, Cut190*, activity.Appl. 102: 10067-10077Crossref (17) 47.Zhong-Johnson E.Z.L. al.An absorbance kinetics films.Sci. 2021; 928Crossref Disulfide crucial folding correct local conformation confer thermal resistance. residues metal responsible replaced introduce bond. D204C E253C mutations calcium TfCut2 formed bond, melting [48.Then bridge increases terephthalate.FEBS Open Bio. 6: 425-432Crossref (47) formation negatively-charged N246D residue positively-charged Arg280 contribute engineered PETaseN246D [45.Son construction work synergistically benefit ag

Language: Английский

---

Upcycling and catalytic degradation of plastic wastes

Cell Reports Physical Science, Journal Year: 2021, Volume and Issue: 2(8), P. 100514 - 100514

Published: July 22, 2021

Various recycling technologies have been developed to deal with plastic problems, but they face considerable economic and technological challenges in practice. An attractive alternative is upcycling, which aims dig out the embedded value incentivize large-scale valorization of wastes. The degradation nonrecoverable wastes another necessity treat omnipresent pollution. This review presents an overview on conversion toward value-added products catalytic Based examination traditional products, we summarize state-of-the-art design development high-value high-performance fuels, chemicals, materials. Subsequently, highlight advances plastics environmentally benign or degradable mineralization into carbon dioxide water. We conclude our perspective ongoing challenge opportunities.

Language: Английский

---