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The effect of nanocoatings enriched with essential oils on ‘Rocha’ pear long storage

2020-02Journal article Open Access
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dc.contributor.authorGago, Custódia
dc.contributor.authorAntão, Rui
dc.contributor.authorDores, Cristino
dc.contributor.authorGuerreiro, Adriana
dc.contributor.authorG, Miguel
dc.contributor.authorFaleiro, Maria Leonor
dc.contributor.authorFigueiredo, Ana Cristina
dc.contributor.authorAntunes, Maria Dulce
dc.date.accessioned2020-04-15T08:18:08Z
dc.date.available2020-04-15T08:18:08Z
dc.date.issued2020-02
dc.description.abstractThe effect of coating 'Rocha' pears with alginate-based nanoemulsions enriched with lemongrass essential oil (LG) or citral (Cit) was investigated. Fruit were treated with the nanoemulsions: sodium alginate 2% (w/w) + citral 1% (w/w) (Cit1%); sodium alginate 2% (w/w) + citral 2% (w/w) (Cit2%); sodium alginate 2% (w/w) + lemongrass 1.25% (w/w) (LG1.25%); sodium alginate 2% (w/w) + lemongrass 2.5% (w/w) (LG2.5%). Then, fruit were stored at 0 °C and at 95% relative humidity, for six months. Fruit samples were taken after two, four and six months, and then placed at 22 °C. Upon removal and after 7 d shelf-life, fruit were evaluated for colour CIE (L*, h◦), firmness, soluble solids content (SSC), titratable acidity (TA), weight loss, electrolytic leakage, microbial growth, symptoms of superficial scald and internal browning. All nanoemulsions had droplets in the nano range <500 nm, showed uniformity of particle size and stable dispersion. Cit-nanoemulsions had lower droplet size and higher stability than LG. No nanoemulsion showed cytotoxicity. Coatings reduced fruit colour evolution and preserved better firmness than control. After shelf-life, better firmness was found in LG-coated fruit. Coatings did not affect SSC and TA. Microbial growth was below the safety limits in all treatments. Fruit treated with LG-nanoemulsions did not show scald symptoms and panelists preferred LG1.25% coated fruit. Cit2% treated fruit showed the highest scald and internal browning symptoms, while LG1.25% did not show any disorders. This study suggests that LG-nanocoatings have the potential for preserving the quality of 'Rocha' pear.pt_PT
dc.description.sponsorshipFCT (SFRH/BPD/108831/2015); UID/BIA/04325/2019/ UID/Multi/00631/2019/ UID/AMB/50017/2019pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3390/foods9020240pt_PT
dc.identifier.issn2304-8158
dc.identifier.urihttp://hdl.handle.net/10400.1/13707
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSuperficial scaldpt_PT
dc.subjectInternal disorderspt_PT
dc.subjectPyrus communispt_PT
dc.subjectCymbopogon citratuspt_PT
dc.subjectCitralpt_PT
dc.titleThe effect of nanocoatings enriched with essential oils on ‘Rocha’ pear long storagept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue2pt_PT
oaire.citation.startPage240pt_PT
oaire.citation.titleFoodspt_PT
oaire.citation.volume9pt_PT
person.familyNameGago
person.familyNameGuerreiro
person.familyNameMiguel
person.familyNameFaleiro
person.familyNameAntunes
person.givenNameCustódia
person.givenNameAdriana
person.givenNameMaria da Graça
person.givenNameMaria Leonor
person.givenNameMaria Dulce
person.identifierR-004-VY7
person.identifier252666
person.identifier177556
person.identifier.ciencia-id6517-A4D9-05AD
person.identifier.ciencia-id5318-F751-754D
person.identifier.ciencia-id6110-6FE7-DF28
person.identifier.ciencia-id281D-5E01-F09A
person.identifier.ciencia-idC11B-9B05-217E
person.identifier.orcid0000-0001-9914-3615
person.identifier.orcid0000-0002-3380-3892
person.identifier.orcid0000-0003-2507-4228
person.identifier.orcid0000-0002-3878-6948
person.identifier.orcid0000-0002-8913-6136
person.identifier.ridG-8496-2019
person.identifier.ridA-4683-2012
person.identifier.scopus-author-id37060829600
person.identifier.scopus-author-id56007053600
person.identifier.scopus-author-id35562054500
person.identifier.scopus-author-id6507927018
person.identifier.scopus-author-id7102645075
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication08f4d8b1-7e3f-4c60-80b2-f6bffcb71878
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relation.isAuthorOfPublication7947cc50-4ae0-4ada-8ddf-081f247adc90
relation.isAuthorOfPublication.latestForDiscovery52857c66-1fbd-4c23-ab8e-83bd6df478f5

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