Influence of the Chitosan and Rosemary Extract on Fungal Biodegradation of Some Plasticized PLA-Based Materials

dc.contributor.authorStoleru, Elena
dc.contributor.authorVasile, Cornelia
dc.contributor.authorOprica, Lacramioara
dc.contributor.authorYilmaz, Onur
dc.date.accessioned2020-12-01T12:02:38Z
dc.date.available2020-12-01T12:02:38Z
dc.date.issued2020
dc.departmentEge Üniversitesien_US
dc.description.abstractThe fungal degradation of the complex polymeric systems based on poly(lactic acid) (PLA) and natural bioactive compounds (chitosan and powdered rosemary alcoholic extract) was studied. Two fungal strains, Chaetomium globosum and Phanerochaete chrysosporium were tested. Both fungi characteristics and changes in morphology, structure and thermal properties were monitored. Biochemical parameters as superoxide dismutase, catalase, soluble protein and malondialdehyde have been determined at different time periods of fungal degradation. the fungi extracellular enzyme activities are slightly decreased in the case of composites containing bioactive compounds. the presence of natural compounds in the PLA-based polymeric system determines an acceleration of fungal degradation and probably the chemical hydrolysis, which further helps the attachment of fungi on the surface of polymeric samples. Significant decreases in average molecular mass of the polymeric samples were observed by fungi action; accompanied by structural changes, increase in crystallinity and decrease of thermal properties and the loss of the physical integrity and finally to degradation and integration of fungal degradation products into environmental medium. It was found that both fungi tested are efficient for PLA-based materials degradation, the most active from them being Chaetomium globosum fungus.en_US
dc.description.sponsorshipMinistry of Research and InnovationMinistry of Research and Innovation, Ontario [34PFE/19.10.2018]en_US
dc.description.sponsorshipThis research was funded through the project Development of the national RD system, Subprogram 1.2-Institutional Performance-RDI excellence funding projects, by the Ministry of Research and Innovation within Program 1. Contract no.34PFE/19.10.2018.en_US
dc.identifier.doi10.3390/polym12020469en_US
dc.identifier.issn2073-4360
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-85080101507en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.3390/polym12020469
dc.identifier.urihttps://hdl.handle.net/11454/62724
dc.identifier.volume12en_US
dc.identifier.wosWOS:000519849800219en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherMdpien_US
dc.relation.ispartofPolymersen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectPLAen_US
dc.subjectbiodegradationen_US
dc.subjectbiochemical parametersen_US
dc.subjectthermal behavioren_US
dc.subjectbioactive compoundsen_US
dc.titleInfluence of the Chitosan and Rosemary Extract on Fungal Biodegradation of Some Plasticized PLA-Based Materialsen_US
dc.typeArticleen_US

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