Estimating hydroxytyrosol-tyrosol derivatives amounts in cv. Cobrançosa olive oils based on the electronic tongue analysis of olive paste extracts
| Autor: | António M. Peres, Susana Casal, Ana C. A. Veloso, Ítala M. G. Marx, José Alberto Pereira, Nuno Rodrigues |
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| Přispěvatelé: | Universidade do Minho |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Non-invasive indirect olive oil evaluation Science & Technology Potentiometric profiles Electronic tongue Health claim Extraction (chemistry) 04 agricultural and veterinary sciences 040401 food science 01 natural sciences Tyrosol chemistry.chemical_compound 0404 agricultural biotechnology chemistry Health claims on food labels 010608 biotechnology Hydroxytyrosol Acid hydrolysis Food science Malaxation Multiple linear regression Lipid sensor membranes Food Science |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 0023-6438 |
| DOI: | 10.1016/j.lwt.2021.111542 |
| Popis: | The estimation of hydroxytyrosol-tyrosol derivatives amounts in olive oils through the analysis of olive pastes collected during malaxation is of utmost relevance due to the relationship with the oils' health claim regarding the protection of blood lipids from oxidative stress. Olive pastes were collected during the industrial extraction of cv. Cobrançosa oils (060 min; 2234 °C). Total phenolic contents of pastes' extracts were assessed (28005400 mg GAE/kg paste). Oils were laboratory-extracted from each paste and, after acid hydrolysis, the contents of hydroxytyrosol and tyrosol derivatives as their sum were determined (25135, 62120 and 68255 mg/kg oil). Olive paste extracts were analyzed with a lab-made potentiometric electronic tongue. The device enabled estimating the total phenolic contents of the pastes (internal-validation: correlation coefficient 0.86, root mean square error 392 mg GAE/kg). Moreover, the electronic tongue allowed a more satisfactory indirect estimation of the total secoiridoids derivatives amounts of the oils (internal-validation: correlation coefficient 0.91, root mean square error 25 mg/kg), based on the olive pastes' potentiometric profiles, without requiring the oils posteriori invasive/destructive analysis. Thus, the electronic tongue could be foreseen as a potential tool for anticipating the health claim fulfilment during oils industrial extraction. The authors are grateful to the Foundation for Science and Tech nology (FCT, Portugal) for financial support by national funds FCT/ MCTES to CIMO (UIDB/00690/2020), to CEB (UIDB/04469/2020), to REQUIMTE-LAQV (UIDB/50006/2020) and to BioTecNorte operation (NORTE-01-0145-FEDER-000004) funded by the European Regional Development Fund under the scope of Norte2020 - Programa Operacional Regional do Norte. ´Itala Marx acknowledges the Ph.D. research grant (SFRH/BD/137283/2018) provided by FCT. Nuno Rodrigues thanks the National funding by FCT- Foundation for Science and Tech nology, P.I., through the institutional scientific employment program contract. info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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