Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/91285
Título: | Electronic nose: a tool to verify the PDO declaration of Portuguese olive oils |
Autor(es): | Rodrigues, Nuno Ferreiro, Nuno Ruano, Daniela Dias, Francisco Veloso, Ana C. A. Pereira, José A. Peres, António M. |
Palavras-chave: | Chemometrics Geographical origin Gas sensors Sensory panel Volatile profile |
Data: | 29-Fev-2024 |
Editora: | Springer |
Revista: | Journal of Food Measurement and Characterization |
Citação: | Rodrigues, N., Ferreiro, N., Ruano, D. et al. Electronic nose: a tool to verify the PDO declaration of Portuguese olive oils. Food Measure 18, 2952–2964 (2024). https://doi.org/10.1007/s11694-024-02374-4 |
Resumo(s): | The volatile and olfactory profiles of three Portuguese olive oils with protected designations of origin (PDO) were studied: Azeite do Alentejo Interior, Azeites da Beira Interior, and Azeite de Trás-os-Montes. Seven classes of volatiles were identified, with aldehydes, followed by hydrocarbons and alcohols, the most prevalent (5.63, 2.92, and 2.79 mg/kg olive oil, respectively). The Azeites da Beira Interior oils exhibited the highest amount of volatiles (18.2±4.6 mg/kg olive oil) compared to the oils from the other two PDOs. Ten positive olfactory sensations were detected, and a significant effect of the PDO on the intensities of fruity, apple, cabbage, tomato, dry and fresh herbs was observed. Specifically, Azeite do Alentejo Interior PDO oils were characterized as fruity-ripe, while Azeite de Trás-os-Montes PDO oils were labelled as fruity-green. Conversely, Azeites da Beira Interior PDO oils encompassed both fruity-ripe and fruity-green oils. Unique volatile and olfactory fingerprints were established for each PDO, allowing the linear discrimination of the oils according to the PDO, with a predictive sensitivity of 98.0±4.2% (repeated K-fold-CV). Furthermore, a lab-made electronic nose successfully discriminated the studied oils based on the PDO, with a predictive accuracy of 99.7±2.0% (repeated K-fold-CV). This device also allowed predicting the concentrations of the three main volatile classes found in the oils through multiple linear regression models (R20.923±0.101 and RMSE1.32±0.72 mg/kg oil; repeated K-fold-CV). These findings underscore the potential of the electronic nose as a reliable traceability tool to authenticate the PDO declaration of Portuguese olive oils, and broaden its use beyond non-PDO oils from a specific geographical area to encompass a national scale. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/91285 |
DOI: | 10.1007/s11694-024-02374-4 |
ISSN: | 2193-4126 |
Versão da editora: | http://www.springer.com/food+science/journal/11694 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_57613_1.pdf | 1,73 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons