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Influence of emulsifier type on the antifungal activity of cinnamon leaf, lemon and bergamot oil nanoemulsions against Aspergillus niger

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Influence of emulsifier type on the antifungal activity of cinnamon leaf, lemon and bergamot oil nanoemulsions against Aspergillus niger

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dc.contributor.author Ribes-Llop, Susana es_ES
dc.contributor.author Fuentes López, Ana es_ES
dc.contributor.author Talens Oliag, Pau es_ES
dc.contributor.author Barat Baviera, José Manuel es_ES
dc.contributor.author Ferrari, Giovanna es_ES
dc.contributor.author Donsí, Francesco es_ES
dc.date.accessioned 2018-11-21T21:05:08Z
dc.date.available 2018-11-21T21:05:08Z
dc.date.issued 2017 es_ES
dc.identifier.issn 0956-7135 es_ES
dc.identifier.uri http://hdl.handle.net/10251/112953
dc.description.abstract [EN] Only exiguous data are currently available on the antifungal properties of essential oil (EO) nanoemulsions against spore-forming microorganisms. The aim of this work is to develop physically stable nanoemulsion-based delivery systems for different EOs (cinnamon leaf, lemon, and bergamot), to exploit their antifungal properties against Aspergillus niger. The inhibition of mycelial radial growth and spore germination were used as indicators of antifungal activity of the nanoemulsions, which were prepared at 3 wt% EO, using non-ionic Tween 80 (T80) or anionic whey protein isolate (WPI) (1 wt%) as emulsifiers, and sunflower oil (1 wt%) as ripening inhibitor. The nanoemulsions were physically stable over seven days of accelerated aging at 35 C. The minimal inhibitory concentration of free cinnamon leaf and of both citrus EOs were 0.35 and 5.50 mg/g, respectively. The encapsulation of cinnamon leaf EO in nanoemulsions significantly enhanced the inhibiting effect against A. niger mycelial growth and spore germination, with respect to the free EO. In contrast, for citrus EOs, the encapsulation in nanoemulsions generally decreased the antifungal activity, likely because of the nanoemulsion acting as a hydrophobic sink for the main constituents of citrus EOs. The emulsifier played a fundamental role in the resulting antifungal activity, with WPI-based nanoemulsions being more effective in inhibiting the mycelial growth and the spore germination of A. niger than T80-based ones. The antifungal action was correlated to the morphological alterations observed in A. niger, such as the loss of cytoplasm in fungal hyphae and hyphal tip. The results of this study show the importance of nanoemulsions design in the development of efficient and stable natural antifungal agents for food applications. es_ES
dc.description.sponsorship Susana Ribes is grateful to the Universitat Politecnica de Valencia (UPV) for an FPI-mobility grant. Special thanks to ProdAl Scarl staff for their support. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Food Control es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Nanoemulsions es_ES
dc.subject Essential oils es_ES
dc.subject Tween 80 es_ES
dc.subject Whey protein isolate es_ES
dc.subject Antifungal activity es_ES
dc.subject Aspergillus niger es_ES
dc.subject.classification TECNOLOGIA DE ALIMENTOS es_ES
dc.title Influence of emulsifier type on the antifungal activity of cinnamon leaf, lemon and bergamot oil nanoemulsions against Aspergillus niger es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.foodcont.2016.09.044 es_ES
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Tecnología de Alimentos - Departament de Tecnologia d'Aliments es_ES
dc.description.bibliographicCitation Ribes-Llop, S.; Fuentes López, A.; Talens Oliag, P.; Barat Baviera, JM.; Ferrari, G.; Donsí, F. (2017). Influence of emulsifier type on the antifungal activity of cinnamon leaf, lemon and bergamot oil nanoemulsions against Aspergillus niger. Food Control. 73:784-795. doi:10.1016/j.foodcont.2016.09.044 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.foodcont.2016.09.044 es_ES
dc.description.upvformatpinicio 784 es_ES
dc.description.upvformatpfin 795 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 73 es_ES
dc.relation.pasarela S\322558 es_ES
dc.contributor.funder Universitat Politècnica de València


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