Low Carbon Footprint Recycling of Post-Consumer PET Plastic with a Metagenomic Polyester Hydrolase

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dc.contributor.authorSonnendecker, Christian
dc.contributor.authorOeser, Juliane
dc.contributor.authorRichter, P. Konstantin
dc.contributor.authorHille, Patrick
dc.contributor.authorZhao, Ziyue
dc.contributor.authorFischer, Cornelius
dc.contributor.authorLippold, Holger
dc.contributor.authorBlazquez-Sanchez, Paula
dc.contributor.authorEngelberger, Felipe
dc.contributor.authorRamirez-Sarmiento, Cesar A.
dc.contributor.authorOeser, Thorsten
dc.contributor.authorLihanova, Yuliia
dc.contributor.authorFrank, Ronny
dc.contributor.authorJahnke, Heinz-Georg
dc.contributor.authorBillig, Susan
dc.contributor.authorAbel, Bernd
dc.contributor.authorStraeter, Norbert
dc.contributor.authorMatysik, Joerg
dc.contributor.authorZimmermann, Wolfgang
dc.date.accessioned2025-01-20T21:13:17Z
dc.date.available2025-01-20T21:13:17Z
dc.date.issued2022
dc.description.abstractEarth is flooded with plastics and the need for sustainable recycling strategies for polymers has become increasingly urgent. Enzyme-based hydrolysis of post-consumer plastic is an emerging strategy for closed-loop recycling of polyethylene terephthalate (PET). The polyester hydrolase PHL7, isolated from a compost metagenome, completely hydrolyzes amorphous PET films, releasing 91 mg of terephthalic acid per hour and mg of enzyme. Vertical scanning interferometry shows degradation rates of the PET film of 6.8 mu m h(-1). Structural analysis indicates the importance of leucine at position 210 for the extraordinarily high PET-hydrolyzing activity of PHL7. Within 24 h, 0.6 mg(enzyme) g(PET)(-1) completely degrades post-consumer thermoform PET packaging in an aqueous buffer at 70 degrees C without any energy-intensive pretreatments. Terephthalic acid recovered from the enzymatic hydrolysate is then used to synthesize virgin PET, demonstrating the potential of polyester hydrolases as catalysts in sustainable PET recycling processes with a low carbon footprint.
dc.fuente.origenWOS
dc.identifier.doi10.1002/cssc.202101062
dc.identifier.eissn1864-564X
dc.identifier.issn1864-5631
dc.identifier.urihttps://doi.org/10.1002/cssc.202101062
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93698
dc.identifier.wosidWOS:000753671800001
dc.issue.numero9
dc.language.isoen
dc.revistaChemsuschem
dc.rightsacceso restringido
dc.subjectbiocatalysis
dc.subjecthydrolases
dc.subjectmetagenome
dc.subjectpolymer degradation
dc.subjectrecycling
dc.subject.ods12 Responsible Consumption and Production
dc.subject.odspa12 Producción y consumo responsable
dc.titleLow Carbon Footprint Recycling of Post-Consumer PET Plastic with a Metagenomic Polyester Hydrolase
dc.typeartículo
dc.volumen15
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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