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dc.contributor.authorYildirim, Selçuk-
dc.contributor.authorRöcker, Bettina-
dc.contributor.authorRüegg, Nadine-
dc.contributor.authorLohwasser, Wolfgang-
dc.description.abstractOxygen scavenging films based on vacuum deposited palladium layers were developed to remove residual oxygen remaining in food packages after modified atmosphere packaging. Palladium (Pd) was coated on to a range of packaging films and in different thicknesses using magnetron sputtering technology. To improve the substrate surface, an additional silicon oxide (SiOx) layer was also applied to the films before Pd deposition. To determine the oxygen scavenging activity, the scavenger films were placed into an airtight cell, which was flushed with a gas mixture containing 2 vol.% oxygen and 5 vol.% hydrogen. The results showed that the oxygen scavenging rate was strongly dependent on the coating substrate as well as on the Pd deposition thickness. Packaging films such as polyethylene terephthalate, aluminium oxide-coated polyethylene terephthalate, oriented polypropylene and polylactic acid were found to be the most suitable substrates for Pd-based oxygen scavengers. Moreover, it was demonstrated that the intermediate SiOx layer between the substrate and the Pd layer led to a substantial increase in the oxygen scavenging activity rate (up to 33-fold) for all applied packaging films. Additionally, it was shown that the optimal Pd layer thickness for the investigated oxygen scavenging films lies between 0.7 and 3.4 nm. The resulting scavenger films have the potential to scavenge residual headspace oxygen of sensitive foods within a matter of minutes leading to shelf life extension and overall quality improvements.de_CH
dc.relation.ispartofPackaging technology & sciencede_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectActive packagingde_CH
dc.subjectOxygen scavengerde_CH
dc.subject.ddc664: Lebensmitteltechnologiede_CH
dc.titleDevelopment of palladium-based oxygen scavenger : optimization of substrate and palladium layer thicknessde_CH
dc.typeKonferenz: Paperde_CH
zhaw.departementLife Sciences und Facility Managementde_CH
zhaw.organisationalunitInstitut für Lebensmittel- und Getränkeinnovation (ILGI)de_CH
zhaw.conference.details27th IAPRI Symposium on Packaging 2015, Valencia, June 8-11, 2015de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
Appears in Collections:Publikationen Life Sciences und Facility Management

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