Publication
FTIR-ATR spectroscopy applied to quality control of grape-derived spirits
| dc.contributor.author | Anjos, Ofélia | |
| dc.contributor.author | Santos, António J.A. | |
| dc.contributor.author | Estevinho, Leticia M. | |
| dc.contributor.author | Caldeira, Ilda | |
| dc.date.accessioned | 2018-01-25T10:00:00Z | |
| dc.date.accessioned | 2018-01-30T16:39:32Z | |
| dc.date.available | 2018-01-25T10:00:00Z | |
| dc.date.available | 2018-01-30T16:39:32Z | |
| dc.date.issued | 2016 | |
| dc.description.abstract | The Fourier transform infrared (FTIR) spectroscopic method with attenuated total reflectance (ATR) was used for predicting the alcoholic strength, the methanol, acetaldehyde and fusel alcohols content of grape-derived spirits. FTIR-ATR spectrum in the mid-IR region (4000-400 cm -1 ) was used for the quantitative estimation by applying partial least square (PLS) regression models and the results were correlated with those obtained from reference methods. In the developed method, a cross-validation with 50% of the samples was used for PLS analysis along with a validation test set with 50% of the remaining samples. Good correlation models with a great accuracy were obtained for methanol (r 2 = 99.4; RPD = 12.8), alcoholic strength (r 2 = 97.2; RPD = 6.0), acetaldehyde (r 2 = 98.2; RPD = 7.5) and fusel alcohols (r 2 from 97.4 to 94.1; RPD from 6.2 to 4.1). These results corroborate the hypothesis that FTIR-ATR is a useful technique for the quality control of grape-derived spirits, whose practical application may improve the efficiency and quickness of the current laboratory analysis. | pt_PT |
| dc.description.sponsorship | The authors thank the technical support of Amélia Soares, Deolinda Mota and Otília Cerveira and the support of Centro de Estudos Florestais, a research unit funded by FCT (PEst-OE/AGR/ UI0239-2014) and Instituto de Ciências Agrárias e Ambientais Mediterrânicas, a research unit funded by FCT (PEst-OE/AGR/ UI0115/2014). The authors also thank to Centro de Biotecnologia de Plantas da Beira Interior for the FTIR-ATR equipment and software OPUS availability. | |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | Anjos, Ofélia; Santos, António J.A.; Estevinho, Letícia M.; Caldeira, Ilda (2016). FTIR-ATR spectroscopy applied to quality control of grape-derived spirits. Food Chemistry. ISSN 0308-8146. 205, p. 28-35 | en_EN |
| dc.identifier.doi | 10.1016/j.foodchem.2016.02.128 | pt_PT |
| dc.identifier.issn | 0308-8146 | |
| dc.identifier.uri | http://hdl.handle.net/10198/15325 | |
| dc.language.iso | eng | |
| dc.peerreviewed | yes | pt_PT |
| dc.relation | PEst-OE/AGR/UI0239-2014 | |
| dc.subject | Alcoholic strength | en_EN |
| dc.subject | Attenuated total reflectance | en_EN |
| dc.subject | Fourier transform infrared spectroscopy | en_EN |
| dc.subject | Fusel alcohols | en_EN |
| dc.subject | Grape-derived spirits | en_EN |
| dc.subject | Methanol | en_EN |
| dc.title | FTIR-ATR spectroscopy applied to quality control of grape-derived spirits | en_EN |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/5876/PEst-OE%2FAGR%2FUI0115%2F2014/PT | |
| oaire.fundingStream | 5876 | |
| person.familyName | Estevinho | |
| person.givenName | Letícia M. | |
| person.identifier.ciencia-id | BA14-09D6-A406 | |
| person.identifier.orcid | 0000-0002-9249-1948 | |
| person.identifier.scopus-author-id | 6506577664 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| rcaap.rights | openAccess | en_EN |
| rcaap.type | article | pt_PT |
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