期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 67, 期 -, 页码 181-186出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.lwt.2015.11.050
关键词
FTIR; Chemometrics; PLS regression; Wine parameters; Ionic determination
资金
- Fundacao para a Ciencia e Tecnologia [SFRH/BD/91419/2012]
- FSE (Quadro Comunitario de Apoio) [SFRH/BPD/81384/2011]
- FEDER funds through the Operational Programme for Competitiveness Factors - COMPETE
- National Funds through FCT - Foundation for Science and Technology [PEST-C/EQB/LA0006/2013, FCOMP-01-0124-FEDER-37285]
- framework of QREN [NORTE-07-0124-FEDER-000067]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/91419/2012] Funding Source: FCT
Although a number of Fourier-transform infrared (FTIR) spectroscopy-based analytical methods for determination of control wine parameters have been reported over the past years, the potential of FTIR spectroscopy has not been fully explored in what concerns wine quality. In this work, FTIR spectroscopy and Partial Least Squares (PLS) regression, were combined for the development of a novel analytical method for chloride and sulfate determination in wines. A careful selection and utilisation of different types of wine (to produce different matrices) was performed to ensure method's robustness. The developed FTIR spectroscopy-based method produced results with a very high accuracy especially for the determination of sulfate in wines (R-P,sulfate(2) = 0.98, RMSEPsulfate = 0.11 g/L and RPDsulfate = 63). The developed method for the determination of chlorides in wine yielded enough accuracy and precision to allow semi-quantitative determinations (R-P,chloride(2) = 0.83, RMSEPchloride = 0.18 and RPDchloride = 2.4). (C) 2015 Elsevier Ltd. All rights reserved.
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