Enzymatic recycling of thermoplastic polyurethanes: Synergistic effect of an esterase and an amidase and recovery of building blocks

Magnin, Audrey; Pollet, Éric; Perrin, Rémi; Ullmann, Christophe; Persillon, Cécile; Phalip, Vincent; Avérous, Luc

doi:10.1016/j.wasman.2018.12.024

Cited by 132 publications

(77 citation statements)

References 36 publications

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“…In 2017, Schmidt et al found that four polyester hydrolases, LC cutinase, TfCut2, Tcur1278, and Tcur0390, were able to degrade emulsified polyester PUR (Schmidt et al, 2017). Among these three cutinase, LC cutinase caused weight losses of up to 4.9 and 4.1% of two commercial polyester PUR elastomers of Elastollan B85A-10 and C85A-10, respectively, within a reaction time of 200 h at 70 • C. Recently, an esterase (E3576), screened from 50 commercially available hydrolases, was shown to be able to hydrolyze a waterborne polyester PUR dispersion and degrade a solid polycaprolactone polyol-based polyester PUR with weight loss of 33% after 51 days (Magnin et al, 2019b). However, this esterase (E3576) cannot degrade poly(hexamethylene adipate) diol-based polyester PUR films, indicating that the chemical structures of the polyol segments significantly affect the biodegradability of polyester PUR (Kim and Kim, 1998;Magnin et al, 2019b).…”

Section: Purmentioning

confidence: 99%

“…Among these products, MHET could be further degraded into TPA and EG by the action of MHETase (Figure 2; Yoshida et al, 2016;Palm et al, 2019). In addition, the ester linkages in polycaprolactone polyol-based PUR (PCL-based PUR) could be hydrolyzed by an esterase (E3576) to generate 6-hydroxyhexanoate (Magnin et al, 2019b). These products could be further metabolized by specific microorganisms through different metabolic pathways (Figure 2; Brzostowicz et al, 2003;Yoshida et al, 2016).…”

Section: Microbial Valorization Of Plastic Wastesmentioning

confidence: 99%

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Microbial Degradation and Valorization of Plastic Wastes

2020

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Section: Purmentioning

confidence: 99%

Section: Microbial Valorization Of Plastic Wastesmentioning

confidence: 99%

Microbial Degradation and Valorization of Plastic Wastes

2020

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“…According to their results, it seems that amidase was able to hydrolyze the urethane bond to some extent. It was possible as a second step after esterase degradation rather than as an independent process [ 83 ]. Amongst enzymes not classified as esterases, there are Impranil degrading cutinases [ 84 ], and polyacrylic PU coating degrading pancreatin [ 102 ].…”

Section: Polyurethane Waste Managementmentioning

confidence: 99%

Polyurethane Recycling and Disposal: Methods and Prospects

2020

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Growing water and land pollution, the possibility of exhaustion of raw materials and resistance of plastics to physical and chemical factors results in increasing importance of synthetic polymers waste recycling, recovery and environmentally friendly ways of disposal. Polyurethanes (PU) are a family of versatile synthetic polymers with highly diverse applications. They are class of polymers derived from the condensation of polyisocyanates and polyalcohols. This paper reports the latest developments in the field of polyurethane disposal, recycling and recovery. Various methods tested and applied in recent years have proven that the processing of PU waste can be economically and ecologically beneficial. At the moment mechanical recycling and glycolysis are the most important ones. Polyurethanes’ biological degradation is highly promising for both post-consumer and postproduction waste. It can also be applied in bioremediation of water and soil contaminated with polyurethanes. Another possibility for biological methods is the synthesis of PU materials sensitive to biological degradation. In conclusion, a high diversity of polyurethane waste types and derivation results in demand for a wide range of methods of processing. Furthermore, already existing ones appear to be enough to state that the elimination of not reprocessed polyurethane waste in the future is possible.

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“…For example, esterase finds application in various fields, playing an important role in the pharmaceutical industries for synthesis of chiral drugs and being able to degrade both natural materials and industrial pollutants [32]. Cellulase and esterase are suitable for degrading both agricultural waste and toxic chemicals, making them an actual interesting tool in the new frontiers of bioremediation of recalcitrant materials such as plastics [33,34]. The presence of these enzymes could also be very interesting in food, pharmaceutical, detergent industry and in waste-water treatment.…”

Section: Enzymesmentioning

confidence: 99%

Extracellular Enzymes and Bioactive Compounds from Antarctic Terrestrial Fungi for Bioprospecting

Zucconi

Canini

Temporiti

et al. 2020

IJERPH

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Antarctica, one of the harshest environments in the world, has been successfully colonized by extremophilic, psychrophilic, and psychrotolerant microorganisms, facing a range of extreme conditions. Fungi are the most diverse taxon in the Antarctic ecosystems, including soils. Genetic adaptation to this environment results in the synthesis of a range of metabolites, with different functional roles in relation to the biotic and abiotic environmental factors, some of which with new biological properties of potential biotechnological interest. An overview on the production of cold-adapted enzymes and other bioactive secondary metabolites from filamentous fungi and yeasts isolated from Antarctic soils is here provided and considerations on their ecological significance are reported. A great number of researches have been carried out to date, based on cultural approaches. More recently, metagenomics approaches are expected to increase our knowledge on metabolic potential of these organisms, leading to the characterization of unculturable taxa. The search on fungi in Antarctica deserves to be improved, since it may represent a useful strategy for finding new metabolic pathways and, consequently, new bioactive compounds.

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Enzymatic recycling of thermoplastic polyurethanes: Synergistic effect of an esterase and an amidase and recovery of building blocks

Cited by 132 publications

References 36 publications

Microbial Degradation and Valorization of Plastic Wastes

Microbial Degradation and Valorization of Plastic Wastes

Polyurethane Recycling and Disposal: Methods and Prospects

Extracellular Enzymes and Bioactive Compounds from Antarctic Terrestrial Fungi for Bioprospecting

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