Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/40311

TitleLayer-by-layer technique to developing functional nanolaminate films with antifungal activity
Author(s)Fabra, María José
Flores-López, M. L.
Cerqueira, M. A.
Jasso de Rodríguez, D.
Lagaron, J. M.
Vicente, A. A.
KeywordsCarvacrol
Alginate
Chitosan
Nanocapsules
Barrier properties
Issue dateMar-2016
PublisherSpringer
JournalFood and Bioprocess Technology
CitationFabra, María José.; López, M.; Cerqueira, M. A.; de Rodriguez, Diana Jasso; Lagaron, Jose M.; Vicente, A. A., Layer-by-layer technique to developing functional nanolaminate films with antifungal activity. Food and Bioprocess Technology, 9(3), 471-480, 2016
Abstract(s)The layer-by-layer (LbL) deposition method was used to build up alternating layers (five) of different polyelectrolyte solutions (alginate, zein-carvacrol nanocapsules, chitosan and chitosan-carvacrol emulsions) on an aminolysed/charged polyethylene terephthalate (A/C PET) film. These nanolaminated films were characterised by contact angle measurements and through the determination of water vapour (WVTR) and oxygen (O2TR) transmission rates. The effect of active nanolaminated films against the Alternaria sp. and Rhizopus stolonifer was also evaluated. This procedure allowed developing optically transparent nanolaminated films with tuneable water vapour and gas properties and antifungal activity. The water and oxygen transmission rate values for the multilayer films were lower than those previously reported for the neat alginate or chitosan films. The presence of carvacrol and zein nanocapsules significantly decreased the water transmission rate (up to 40 %) of the nanolaminated films. However, the O2TR behaved differently and was only improved (up to 45 %) when carvacrol was encapsulated, i.e. nanolaminated films prepared by alternating alginate with nanocapsules of zein-carvacrol layers showed better oxygen barrier properties than those prepared as an emulsion of chitosan and carvacrol. These films containing zein-carvacrol nanocapsules also showed the highest antifungal activity (30 %), which did not significantly differ from those obtained with the highest amount of carvacrol, probably due to the controlled release of the active agent (carvacrol) from the zein-carvacrol nanocapsules. Thus, this work shows that nanolaminated films prepared with alternating layers of alginate and zein-carvacrol nanocapsules can be considered to improve the shelf-life of foodstuffs.
TypeArticle
URIhttp://hdl.handle.net/1822/40311
DOI10.1007/s11947-015-1646-1
ISSN1935-5130
e-ISSN1935-5149
Publisher versionhttp://www.springer.com/food+science/journal/11947
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

Files in This Item:
File Description SizeFormat 
document_26565_1.pdf417,59 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID