Biodegradable κ-carrageenan/nanoclay nanocomposite films containing Rosmarinus officinalis L. extract for improved strength and antibacterial performance

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dc.contributor.authorNouri, A.
dc.contributor.authorTavakkoli Yaraki, M.
dc.contributor.authorGhorbanpour, M.
dc.contributor.authorWang, S.
dc.date.issued2018
dc.description.abstractIn this study, biodegradable κ-carrageenan films containing 3% nanoclay and different amounts of rosemary extract (1, 2 and 3% v/v) were fabricated and their physical, thermal, and mechanical properties, as well as antimicrobial activity were examined. The film thickness did not change significantly by the addition of rosemary extract. UV light transmission value in the control film was 20.46%, while the value for the film with 3% v/v rosmary extract reduced to 0.13%. Elongation at break (EB%) and tensile strength (TS) of the carrageenan film without the extract were 19.07% and 15.96MPa, respectively, while after adding 3% v/v of rosemary extract, the EB and TS were increased to 27.17% and 30.77MPa, respectively. Incorporation of rosemary extract greatly reduced water vapor permeability (WVP) (5.27 × 10⁻¹⁰ g/m·s·Pa in control film vs 2.14 × 10⁻¹⁰ g/m·s·Pa in the film containing 3% v/v rosemary extract). More importantly, the carrageenan film with 3% extract displayed >99% inhibition against B. cereus, E. coli, P. aeruginosa, and S. aureus compared with the control film. The present study showed that rosemary extract is an excellent additive to enhance the mechanical strength and antibacterial activity of carrageenan films and can be used for active packing in food packing industry.
dc.description.statementofresponsibilityAfsaneh Nouri, Mohammad Tavakkoli Yaraki, Mohammad Ghorbanpour, Shaobin Wang
dc.identifier.citationInternational Journal of Biological Macromolecules, 2018; 115:227-235
dc.identifier.doi10.1016/j.ijbiomac.2018.04.051
dc.identifier.issn0141-8130
dc.identifier.issn1879-0003
dc.identifier.orcidWang, S. [0000-0002-1751-9162]
dc.identifier.urihttp://hdl.handle.net/2440/119130
dc.language.isoen
dc.publisherElsevier
dc.rights© 2018 Published by Elsevier B.V.
dc.source.urihttps://doi.org/10.1016/j.ijbiomac.2018.04.051
dc.subjectActive packaging; rosemary extract; antibacterial film; kappa-carrageenan; nanoclay
dc.titleBiodegradable κ-carrageenan/nanoclay nanocomposite films containing Rosmarinus officinalis L. extract for improved strength and antibacterial performance
dc.title.alternativeBiodegradable kappa-carrageenan/nanoclay nanocomposite films containingRosmarinus officinalis L. extract for improved strength andantibacterial performance
dc.typeJournal article
pubs.publication-statusPublished

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