Journal
MICROORGANISMS
Volume 10, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/microorganisms10010039
Keywords
polyethylene terephthalate; biodegradation; bioconversion; artificial microbial consortia
Categories
Funding
- National Key Research and Development Program of China [2019YFA0706900]
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Polyethylene terephthalate (PET) is a widely used plastic and its biodegradation and bioconversion have become important in addressing environmental plastic pollution. This review summarizes the advances in modified PET hydrolases, engineered microbial chassis, bioconversion pathways of PET monomers, and artificial microbial consortia in PET biodegradation and bioconversion.
Polyethylene terephthalate (PET) is a widely used plastic that is polymerized by terephthalic acid (TPA) and ethylene glycol (EG). In recent years, PET biodegradation and bioconversion have become important in solving environmental plastic pollution. More and more PET hydrolases have been discovered and modified, which mainly act on and degrade the ester bond of PET. The monomers, TPA and EG, can be further utilized by microorganisms, entering the tricarboxylic acid cycle (TCA cycle) or being converted into high value chemicals, and finally realizing the biodegradation and bioconversion of PET. Based on synthetic biology and metabolic engineering strategies, this review summarizes the current advances in the modified PET hydrolases, engineered microbial chassis in degrading PET, bioconversion pathways of PET monomers, and artificial microbial consortia in PET biodegradation and bioconversion. Artificial microbial consortium provides novel ideas for the biodegradation and bioconversion of PET or other complex polymers. It is helpful to realize the one-step bioconversion of PET into high value chemicals.
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