pbs

Polybutylene succinate (PBS)

Polybutylene succinate

PBS is a biodegrdable polymer that is synthezised by condenastion of 1,4 butanediol and succinic acid. The aliphatic polyester is a thermoplast with a melting tmepertaure of 105°C. Its mechanical properties are similiar to those of the high density polyethylene and isotactic polypropylene. The monomers of PBS can either be derived from chemical syntheis using fossile ressourcesnad/or through fermentation using biomass. PBS is mainly used in foils (especially mulching foils) and other wrapping materials. An excellent review on the properties and use of PBS has been published by Aliotta et al., 2022. Since the polymer contains a central ester bond it is fiull decomposoable. Due to the known promisuity of esteraes is can be expected that many enzmes form different microbial phlyla will be able to degrade the poylmer. It has previsuly been reported that often fungi (mainlyAscomycta) are involved in PBS degrdadation (Koitabashi, 2012). Further enrichment studies ave implied that possily Methylobacterium, Deinococcus, Hymenobacter, Bacilli, Sphingomonas, and unclassified Comamonadaceae are involved in degrdadtion (Bandopadhyay,2020). Microbial degrdadation of mulching foils appears to correlate with increased estrase activites in soils (Yamamoto-Tamura, 2015).

Microorganisms and enzymes reported to degrade te polymer are listed below:

Microbial host/enzyme/geneReferenceGenBank/ UniProtPDB entryNCBI BLAST
Bacteria
Fungi


  • pbs.txt
  • Last modified: 2022/09/26 20:58
  • by Wolfgang Streit