Environmental toxicity and decomposition of polyethylene

Zhuang, Yingping; Seong, Hyeon Jeong; Jang, Yu‐Sin

doi:10.1016/j.ecoenv.2022.113933

Cited by 97 publications

(74 citation statements)

References 145 publications

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“…During the meat storage, the PE film coated onto the paper surface of the IT package comes in contact with chicken breast. It was showed that some enzymes like peroxidases, laccases, hydroxylases, and reductases are able to degrade PE by depolymerizing the long carbon chains into smaller parts of oligomers, monomers, dimers, and sometimes monomer mixtures 43 . Thus, it is possible that these enzymes to breakdown the C–C bonds from the polymeric PE chain, thus generating –CH 2 –CH 2 –CH 2 – fragments, chemically similar with H 2 N–CH 2 ‐CH 2 ‐CH 2 ‐ groups, transferred by spermidine‐synthase on PUT in order to generate SPD.…”

Section: Discussionmentioning

confidence: 99%

Storage of chicken breast meat in paper coated with different types of hydrophobic agents

et al. 2022

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Chicken meat is well known for its high nutritional value. Its shelf life is short, due to the pronounced perishability, even under refrigeration. Paper bags are usually used as packaging materials, due to their biodegradability. The main negative aspect concerning paper is its high porosity and low moisture barrier. In this regard, it has to be coated/modified with efficient moisture barrier materials. The storage of chicken breast meat wrapped in four types of paper-based materials currently in use in Romania (RO), Italy (IT), Spain (SP) and Slovenia (SLO) is reported. RO and IT are paper coated with polyethylene (PE) film, SP is waxed paper, and SLO is paper modified with hydrophobized starch. The influence of the coating film on the organoleptical, biochemical and microbiological characteristics of the chicken breast meat stored at 4 C was the aim of the study. The mathematical modelling revealed two aspects:(1) the stability period in which the meat safe for consumption is in the range 1.92-2.18 days in the case of all paper types, and (2) cadaverine, the amine generated by protein degradation, is a less sensitive indicator of the meat alteration than microbial growth. The papers coated with PE (RO and IT samples) and with hydrophobized starch (SLO paper) were packaging materials more efficient that the waxed paper (SP sample). The polyethylene film reduced the conversion of putrescine into spermidine in a higher extent than wax.

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Section: Discussionmentioning

confidence: 99%

Storage of chicken breast meat in paper coated with different types of hydrophobic agents

et al. 2022

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“…The major plastics that have been found to be decomposed by microbial action, and for whom metalloenzyme activity has been thoroughly characterized, are polyethylene (PE) and nylon-66 [ 16 ]. PE is an oil-based polymer obtained from the polymerization of ethylene monomers and, therefore, as in natural rubber, monomers are linked via C-C single bonds [ 42 , 43 ]. Variables including molecular weight, branching, and crystal structure affect PE mechanical properties.…”

Section: Natural and Synthetic Polymers Processed By Oxidative Metall...mentioning

confidence: 99%

Recent Theoretical Insights into the Oxidative Degradation of Biopolymers and Plastics by Metalloenzymes

Rovaletti

Gioia

Fantucci

et al. 2023

IJMS

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Molecular modeling techniques have become indispensable in many fields of molecular sciences in which the details related to mechanisms and reactivity need to be studied at an atomistic level. This review article provides a collection of computational modeling works on a topic of enormous interest and urgent relevance: the properties of metalloenzymes involved in the degradation and valorization of natural biopolymers and synthetic plastics on the basis of both circular biofuel production and bioremediation strategies. In particular, we will focus on lytic polysaccharide monooxygenase, laccases, and various heme peroxidases involved in the processing of polysaccharides, lignins, rubbers, and some synthetic polymers. Special attention will be dedicated to the interaction between these enzymes and their substrate studied at different levels of theory, starting from classical molecular docking and molecular dynamics techniques up to techniques based on quantum chemistry.

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“…Plastic waste materials, such as polyethylene, polyethylene terephthalate, polystyrene, and polypropylene, have been buried in landfills; most of the waste is polyethylene ( 1 , 2 ). Some microorganisms living under landfill conditions are known to degrade such plastic waste materials ( 3 – 5 ).…”

Section: Announcementmentioning

confidence: 99%

“…Some microorganisms living under landfill conditions are known to degrade such plastic waste materials ( 3 – 5 ). Recently, microorganisms that are capable of degrading plastic pollutants have gained more attention because plastic waste is known to be hazardous to the environment and humans ( 2 , 6 ). In this study, we analyzed the complete genome sequence of Acinetobacter nosocomialis GNU001, which is capable of degrading polyethylene and was isolated by subculture methods from a polyethylene waste fragment collected at a landfill site.…”

Section: Announcementmentioning

confidence: 99%

Complete Genome Sequence of Acinetobacter nosocomialis GNU001, Isolated from a Plastic-Containing Landfill

Seong

Zhuang

Jang

2023

Microbiol Resour Announc

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Environmental toxicity and decomposition of polyethylene

Cited by 97 publications

References 145 publications

Storage of chicken breast meat in paper coated with different types of hydrophobic agents

Storage of chicken breast meat in paper coated with different types of hydrophobic agents

Recent Theoretical Insights into the Oxidative Degradation of Biopolymers and Plastics by Metalloenzymes

Complete Genome Sequence of Acinetobacter nosocomialis GNU001, Isolated from a Plastic-Containing Landfill

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