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Effect of high hydrostatic pressure (HHP) on the quality of four edible flowers: Viola x wittrockiana, Centaurea cyanus, Borago officinalis and Camellia japonica

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dc.contributor.authorFernandes, Luana
dc.contributor.authorCasal, Susana
dc.contributor.authorPereira, J.A.
dc.contributor.authorPereira, Ermelinda
dc.contributor.authorRamalhosa, Elsa
dc.contributor.authorSaraiva, Jorge A.
dc.date.accessioned2018-02-26T10:43:24Z
dc.date.available2018-02-26T10:43:24Z
dc.date.issued2017
dc.description.abstractEdible flowers are becoming more popular, but they are quite perishable with short shelf life. Until this moment, the unique technologies used by the industry are cold storage, hot air convective drying, freeze-drying and other drying methods. In this sense, finding new food technologies able to increase the shelf-life of this kind of product will bring important economic benefits. Hence, high hydrostatic pressure (HHP) treatments appear as good alternatives to extend shelf life and keep the original freshness, taste and odour of products. So, the aim of the study was to evaluate the effect of HHP on the appearance, bioactivity (total phenolics, flavonoids, hydrolysable tannins, monomeric anthocyanins, DPPH radical scavenging activity and reducing power) and microbial content (total aerobic mesophilic, yeast and molds, lactic acid bacteria, total coliforms, Escherichia coli and psychrotrophic bacteria) of four edible flowers (pansies, centaurea, borage and camellia) along storage at 4 °C. Several treatments at 75 to 450 MPa and holding times (1, 5 and 10 min) were applied. Borage and camellia were unacceptable after all treatments, while centaurea showed good appearance at 100/5 MPa/min; however, the shelf life didn’t increase. Pansies treated at 75/5 and 75/10 MPa/min also retained the appearance of fresh flowers. Furthermore, pansies submitted at 75/5 MPa/min maintained good appearance over 20 days of storage at 4 °C, while the untreated remained satisfactory only until 6 days. Even though no significant differences on microbial load were observed between untreated and HHP treated pansies in day 0, HHP induced the production of bioactive compounds, increasing the shelf-life of pansies. In conclusion, the HHP treatment of pansies at 75 MPa for short holding times is a promising technology to extend pansies’ shelf-life.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFernandes, Luana; Casal, Susana; Pereira, J.A.; Pereira, Ermelinda; Ramalhosa, Elsa; Saraiva, Jorge A. (2017). Effect of high hydrostatic pressure (HHP) on the quality of four edible flowers: Viola x wittrockiana, Centaurea cyanus, Borago officinalis and Camellia japónica. In VIII Congresso Ibérico de Ciências Hortícolas. Coimbra. ISBN 978-972-8936-27-3pt_PT
dc.identifier.isbn978-972-8936-27-3
dc.identifier.urihttp://hdl.handle.net/10198/15986
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectEdible flowerspt_PT
dc.subjectHigh hydrostatic pressurept_PT
dc.subjectAppearancept_PT
dc.subjectBioactive compoundspt_PT
dc.subjectAntioxidant activitypt_PT
dc.subjectMicrobiological analysespt_PT
dc.titleEffect of high hydrostatic pressure (HHP) on the quality of four edible flowers: Viola x wittrockiana, Centaurea cyanus, Borago officinalis and Camellia japonicapt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceCoimbrapt_PT
oaire.citation.titleVIII Congresso Ibérico de Ciências Hortícolaspt_PT
person.familyNameFernandes
person.familyNamePereira
person.familyNamePereira
person.familyNameRamalhosa
person.givenNameLuana
person.givenNameJosé Alberto
person.givenNameErmelinda
person.givenNameElsa
person.identifier.ciencia-id1219-7C60-1311
person.identifier.ciencia-id611F-80B2-A7C1
person.identifier.ciencia-id3916-218E-1629
person.identifier.ciencia-id1A1D-FC05-A05D
person.identifier.orcid0000-0001-9377-2453
person.identifier.orcid0000-0002-2260-0600
person.identifier.orcid0000-0002-9431-5059
person.identifier.orcid0000-0003-2503-9705
person.identifier.ridL-6798-2014
person.identifier.scopus-author-id57204366348
person.identifier.scopus-author-id35222107200
person.identifier.scopus-author-id6602978189
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublication27b7ab18-734e-473d-b117-d2f5b2f35dc6
relation.isAuthorOfPublication7932162e-a2da-4913-b00d-17babbe51857
relation.isAuthorOfPublication9d6b3744-286d-42bc-b363-533450bdb07c
relation.isAuthorOfPublicationd74be6c0-1703-4f77-bd81-e289ec981ee3
relation.isAuthorOfPublication.latestForDiscovery27b7ab18-734e-473d-b117-d2f5b2f35dc6

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