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Identification of important abiotic and biotic factors in the biodegradation of poly(l-lactic acid)

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dc.title Identification of important abiotic and biotic factors in the biodegradation of poly(l-lactic acid) en
dc.contributor.author Husárová, Lucie
dc.contributor.author Pekařová, Silvie
dc.contributor.author Stloukal, Petr
dc.contributor.author Kucharczyk, Pavel
dc.contributor.author Verney, Vincent
dc.contributor.author Commereuc, Sophie
dc.contributor.author Ramone, Audrey
dc.contributor.author Koutný, Marek
dc.relation.ispartof International Journal of Biological Macromolecules
dc.identifier.issn 0141-8130 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2014
utb.relation.volume 71
dc.citation.spage 155
dc.citation.epage 162
dc.type article
dc.language.iso en
dc.publisher Elsevier Science B.V.
dc.identifier.doi 10.1016/j.ijbiomac.2014.04.050
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0141813014002773
dc.subject Abiotic hydrolysis en
dc.subject Biodegradation en
dc.subject Polylactic acid en
dc.description.abstract The biodegradation of four poly(l-lactic acid) (PLA) samples with molecular weights (MW) ranging from approximately 34 to 160kgmol-1 was investigated under composting conditions. The biodegradation rate decreased, and initial retardation was discernible in parallel with the increasing MW of the polymer. Furthermore, the specific surface area of the polymer sample was identified as the important factor accelerating biodegradation. Microbial community compositions and dynamics during the biodegradation of different PLA were monitored by temperature gradient gel electrophoresis, and were found to be virtually identical for all PLA materials and independent of MW. A specific PLA degrading bacteria was isolated and tentatively designated Thermopolyspora flexuosa FTPLA. The addition of a limited amount of low MW PLA did not accelerate the biodegradation of high MW PLA, suggesting that the process is not limited to the number of specific degraders and/or the induction of specific enzymes. In parallel, abiotic hydrolysis was investigated for the same set of samples and their courses found to be quasi-identical with the biodegradation of all four PLA samples investigated. This suggests that the abiotic hydrolysis represented a rate limiting step in the biodegradation process and the organisms present were not able to accelerate depolymerization significantly by the action of their enzymes. en
utb.faculty University Institute
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1003929
utb.identifier.obdid 43872180
utb.identifier.scopus 2-s2.0-84911196225
utb.identifier.wok 000345722700023
utb.identifier.coden IJBMD
utb.source j-scopus
dc.date.accessioned 2015-01-13T09:25:44Z
dc.date.available 2015-01-13T09:25:44Z
dc.description.sponsorship Grant Agency of the Czech Republic [GACR P108/10/0200]; Internal Grant Agency of Tomas Bata University in Zlin [IGA/FT/2014/005]; European Regional Development Fund (ERDF) [CZ.1.05/2.1.00/03.0111]; national budget of the Czech Republic, within the framework of the project Centre of Polymer Systems
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Husárová, Lucie
utb.contributor.internalauthor Pekařová, Silvie
utb.contributor.internalauthor Stloukal, Petr
utb.contributor.internalauthor Kucharczyk, Pavel
utb.contributor.internalauthor Koutný, Marek
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