Bioactive Films from Willow Bark Extract and Nanocellulose Double Network Hydrogels

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorLohtander, Tiaen_US
dc.contributor.authorGrande, Rafaelen_US
dc.contributor.authorÖsterberg, Monikaen_US
dc.contributor.authorLaaksonen, Päivien_US
dc.contributor.authorArola, Suvien_US
dc.contributor.departmentDepartment of Bioproducts and Biosystemsen
dc.contributor.groupauthorBioproduct Chemistryen
dc.contributor.organizationHäme University of Applied Sciencesen_US
dc.contributor.organizationVTT Technical Research Centre of Finlanden_US
dc.date.accessioned2021-11-24T07:24:07Z
dc.date.available2021-11-24T07:24:07Z
dc.date.issued2021-08-12en_US
dc.descriptionThe work has been conducted under Academy of Finland’s project #326262/#311608, #327209, and #327195.
dc.description.abstractIn nature, the protection of sensitive components from external threats relies on the combination of physical barriers and bioactive secondary metabolites. Polyphenols and phenols are active molecules that protect organisms from physical and chemical threats such as UV irradiation and oxidative stress. The utilization of biopolymers and natural bioactive phenolic components as protective coating layers in packaging solutions would enable easier recyclability of materials and greener production process compared with the current plastic-based products. Herein, we produce a fully wood-based double network material with tunable bioactive and optical properties consisting of nanocellulose and willow bark extract. Willow bark extract, embedded in nanocellulose, was cross-linked into a polymeric nanoparticle network using either UV irradiation or enzymatic means. Based on rheological analysis, atomic force microscopy, antioxidant activity, and transmittance measurements, the cross-linking resulted in a double network gel with enhanced rheological properties that could be casted into optically active films with good antioxidant properties and tunable oxygen barrier properties. The purely biobased, sustainably produced, bioactive material described here broadens the utilization perspectives for wood-based biomass, especially wood-bark extractives. This material has potential in applications where biodegradability, UV shielding, and antioxidant properties of hydrogels or thin films are needed, for example in medical, pharmaceutical, food, and feed applications, but also as a functional barrier coating in packaging materials as the hydrogel properties are transferred to the casted and dried films.en
dc.description.versionPeer revieweden
dc.format.extent13
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationLohtander, T, Grande, R, Österberg, M, Laaksonen, P & Arola, S 2021, ' Bioactive Films from Willow Bark Extract and Nanocellulose Double Network Hydrogels ', Frontiers in Chemical Engineering, vol. 3, 708170 . https://doi.org/10.3389/fceng.2021.708170en
dc.identifier.doi10.3389/fceng.2021.708170en_US
dc.identifier.issn2673-2718
dc.identifier.otherPURE UUID: 7638d619-1ce0-4549-91b8-de9654fb90b1en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/7638d619-1ce0-4549-91b8-de9654fb90b1en_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/75905578/CHEM_Lohtander_et_al_Bioactive_Films_from_Willow_Bark_2021_Frontiers_in_Chemical_Engineering.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/111206
dc.identifier.urnURN:NBN:fi:aalto-2021112410365
dc.language.isoenen
dc.publisherFRONTIERS MEDIA SA
dc.relation.ispartofseriesFrontiers in Chemical Engineeringen
dc.relation.ispartofseriesVolume 3en
dc.rightsopenAccessen
dc.titleBioactive Films from Willow Bark Extract and Nanocellulose Double Network Hydrogelsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion

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