Sonnendecker_2022_ChemSusChem_15_e202101062

Reference

Title : Low Carbon Footprint Recycling of Post-Consumer PET Plastic with a Metagenomic Polyester Hydrolase - Sonnendecker_2022_ChemSusChem_15_e202101062
Author(s) : Sonnendecker C , Oeser J , Richter PK , Hille P , Zhao Z , Fischer C , Lippold H , Blazquez-Sanchez P , Engelberger F , Ramirez-Sarmiento CA , Oeser T , Lihanova Y , Frank R , Jahnke HG , Billig S , Abel B , Strater N , Matysik J , Zimmermann W
Ref : ChemSusChem , 15 :e202101062 , 2022
Abstract :

Our planet is flooded with plastics and the need for sustainable recycling strategies of 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 hydrolyzed amorphous PET films, releasing 91 mg of terephthalic acid per hour and mg of enzyme. Degradation rates of the PET film of 6.8 microm h -1 were monitored by vertical scanning interferometry. Structural analysis indicated 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 degraded post-consumer thermoform PET packaging in an aqueous buffer at 70 degreesC without any energy-intensive pretreatments. Terephthalic acid recovered from the enzymatic hydrolysate was used to synthesize virgin PET, demonstrating the potential of polyester hydrolases as catalysts in sustainable PET recycling processes with a low carbon footprint.

PubMedSearch : Sonnendecker_2022_ChemSusChem_15_e202101062
PubMedID: 34129279
Gene_locus related to this paper: 9firm-PHL7

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Citations formats

Sonnendecker C, Oeser J, Richter PK, Hille P, Zhao Z, Fischer C, Lippold H, Blazquez-Sanchez P, Engelberger F, Ramirez-Sarmiento CA, Oeser T, Lihanova Y, Frank R, Jahnke HG, Billig S, Abel B, Strater N, Matysik J, Zimmermann W (2022)
Low Carbon Footprint Recycling of Post-Consumer PET Plastic with a Metagenomic Polyester Hydrolase
ChemSusChem 15 :e202101062

Sonnendecker C, Oeser J, Richter PK, Hille P, Zhao Z, Fischer C, Lippold H, Blazquez-Sanchez P, Engelberger F, Ramirez-Sarmiento CA, Oeser T, Lihanova Y, Frank R, Jahnke HG, Billig S, Abel B, Strater N, Matysik J, Zimmermann W (2022)
ChemSusChem 15 :e202101062