Publicação
Effects of different drying methods on the bioactive compounds and antioxidant properties of edible Centaurea (Centaurea cyanus) petals
| dc.contributor.author | Fernandes, Luana | |
| dc.contributor.author | Casal, Susana | |
| dc.contributor.author | Pereira, J.A. | |
| dc.contributor.author | Saraiva, Jorge A. | |
| dc.contributor.author | Ramalhosa, Elsa | |
| dc.date.accessioned | 2018-02-19T10:00:00Z | |
| dc.date.accessioned | 2019-01-28T11:54:17Z | |
| dc.date.available | 2018-01-19T10:00:00Z | |
| dc.date.available | 2019-01-28T11:54:17Z | |
| dc.date.issued | 2018 | |
| dc.description.abstract | The present study aimed to evaluate the effects of hot-air convective drying, shade drying and freeze-drying on the bioactive compounds and antioxidant activity of Centaurea (Centaurea cyanus L.) petals, as well as on several of their physicochemical properties. All the dried samples showed different appearances as compared to fresh petals, with lower titratable acidity, lower carotenoids and hydrolysable tannins contents, and greater antioxidant activity. Of the drying methods, shade drying presented the highest values for monomeric anthocyanins, flavonoids, hydrolysable tannins, total reducing capacity and antioxidant activity. By contrast, greater losses were observed as a result of hot-air convective drying. Thus shade drying is a highly promising process that should be considered as a suitable drying method for Centaurea petals. | |
| dc.description.abstract | No presente trabalho pretendeu-se avaliar o efeito da secagem por convecção com ar quente, secagem à sombra e liofilização sobre compostos bioactivos e actividade antioxidante de pétalas de centáurea, bem como em algumas propriedades físico-químicas. Todas as amostras desidratadas apresentaram uma aparência diferente das frescas, menor acidez titulável e menores teores de carotenóides e taninos hidrolisáveis. Por outro lado, as amostras secas apresentaram uma maior actividade antioxidante. Entre os métodos de secagem, a secagem à sombra apresentou os maiores valores de antocianinas monoméricas, flavonóides, taninos hidrolisáveis, capacidade redutora total e actividade antioxidante. Pelo contrário, as maiores perdas foram observadas com ar quente. Assim, a secagem à sombra é um processo bastante promissor que deve ser considerado como um método adequado para desidratar pétalas de centáurea. | |
| dc.description.version | info:eu-repo/semantics/publishedVersion | en_EN |
| dc.identifier.citation | Fernandes, Luana; Casal, Susana; Pereira, José Alberto; Saraiva, Jorge Alexandre; Ramalhosa, Elsa (2018). Effects of different drying methods on the bioactive compounds and antioxidant properties of edible Centaurea (Centaurea cyanus) petals. Brazilian Journal of Food Technology. ISSN 1981-6723. 21, p. 1-10 | en_EN |
| dc.identifier.doi | 10.1590/1981-6723.21117 | en_EN |
| dc.identifier.uri | http://hdl.handle.net/10198/18576 | |
| dc.language.iso | eng | |
| dc.peerreviewed | yes | en_EN |
| dc.subject | Antioxidant activity. | en_EN |
| dc.subject | Bioactive compounds | en_EN |
| dc.subject | Centaurea petals | en_EN |
| dc.subject | Freeze-drying | en_EN |
| dc.subject | Hot-air convective drying | en_EN |
| dc.subject | Shade drying | en_EN |
| dc.title | Effects of different drying methods on the bioactive compounds and antioxidant properties of edible Centaurea (Centaurea cyanus) petals | en_EN |
| dc.title.alternative | Efeito de diferentes métodos de secagem nos compostos bioactivos e propriedades antioxidantes de pétalas de Centáurea (Centaurea cyanus) | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| person.familyName | Fernandes | |
| person.familyName | Pereira | |
| person.familyName | Ramalhosa | |
| person.givenName | Luana | |
| person.givenName | José Alberto | |
| person.givenName | Elsa | |
| person.identifier.ciencia-id | 1219-7C60-1311 | |
| person.identifier.ciencia-id | 611F-80B2-A7C1 | |
| person.identifier.ciencia-id | 1A1D-FC05-A05D | |
| person.identifier.orcid | 0000-0001-9377-2453 | |
| person.identifier.orcid | 0000-0002-2260-0600 | |
| person.identifier.orcid | 0000-0003-2503-9705 | |
| person.identifier.rid | L-6798-2014 | |
| person.identifier.scopus-author-id | 57204366348 | |
| person.identifier.scopus-author-id | 6602978189 | |
| rcaap.rights | openAccess | en_EN |
| rcaap.type | article | en_EN |
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