title: Effect of cellulose and lignin on disintegration, antimicrobial and antioxidant properties of PLA active films.
abstract: This study reports the effects on antimicrobial, antioxidant, migration and disintegrability activities of ternary nanocomposite films based on poly(lactic acid) incorporating two biobased nanofillers, (cellulose nanocrystals (CNC) and lignin nanoparticles (LNP)), in two different amounts (1 and 3% wt.). Results from antimicrobial tests revealed a capacity to inhibit the Gram negative bacterial growth of Xanthomonas axonopodis pv. vesicatoria and Xanthomonas arboricola pv. pruni along the time, offering innovative opportunities against dangerous bacterial plant pathogens. LNP proved to be highly efficient in antioxidation activity, based on the disappearance of the absorption band at 517nm of the free radical, 2,2-diphenyl-1-picrylhydrazyl (DPPH) upon reduction by an antiradical compound; moreover the combination of LNP and CNC generates a synergistic positive effect in the antioxidation response of PLA ternary films. Furthermore, all the studied formulations showed a disintegrability value up to 90% after 15days of incubation in composting conditions. Migration results showed that the films can be considered suitable for application in food packaging field.
authors.affiliation: University of Perugia, Civil and Environmental Engineering Department Materials Engineering Center, UdR INSTM, Terni, Italy.
authors.forename: W
authors.initials: W
authors.lastname: Yang
authors.affiliation: University of Perugia, Civil and Environmental Engineering Department Materials Engineering Center, UdR INSTM, Terni, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Fortunati
authors.affiliation: University of Perugia, Civil and Environmental Engineering Department Materials Engineering Center, UdR INSTM, Terni, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Dominici
authors.affiliation: University of Tuscia, Department of Agricultural Sciences and Forestry (DAFNE), Via S. Camillo De Lellis snc, 01100 Viterbo, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Giovanale
authors.affiliation: University of Tuscia, Department of Agricultural Sciences and Forestry (DAFNE), Via S. Camillo De Lellis snc, 01100 Viterbo, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Mazzaglia
authors.affiliation: University of Tuscia, Department of Agricultural Sciences and Forestry (DAFNE), Via S. Camillo De Lellis snc, 01100 Viterbo, Italy.
authors.forename: G M
authors.initials: GM
authors.lastname: Balestra
authors.affiliation: University of Perugia, Civil and Environmental Engineering Department Materials Engineering Center, UdR INSTM, Terni, Italy.
authors.forename: J M
authors.initials: JM
authors.lastname: Kenny
authors.affiliation: University of Perugia, Civil and Environmental Engineering Department Materials Engineering Center, UdR INSTM, Terni, Italy. Electronic address: debora.puglia@unipg.it.
authors.forename: D
authors.initials: D
authors.lastname: Puglia
mesh_terms: D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology; D001713:Biphenyl Compounds / Q000737:chemistry / Q000494:pharmacology; D002482:Cellulose / Q000737:chemistry / Q000494:pharmacology*; D008031:Lignin / Q000737:chemistry / Q000494:pharmacology*; D053758:Nanoparticles / Q000737:chemistry; D010851:Picrates / Q000737:chemistry / Q000494:pharmacology; D011091:Polyesters / Q000737:chemistry / Q000494:pharmacology*; D011108:Polymers / Q000737:chemistry / Q000494:pharmacology; D053532:Xanthomonas axonopodis / Q000187:drug effects* / Q000254:growth & development / Q000472:pathogenicity
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D010851:Picrates; D011091:Polyesters; D011108:Polymers; C033616:poly(lactide); D002482:Cellulose; D008031:Lignin; C004931:1,1-diphenyl-2-picrylhydrazyl
keywords: Active packaging; Bacterial plant pathogens; Cellulose nanocrystals; Lignin nanoparticles; Poly (lactic acid) nanocomposites