RT Journal Article
T1 Application of functional data analysis and FTIR-ATR spectroscopy to discriminate wine spirits ageing technologies
A1 Anjos, Ofélia
A1 Martínez Comesaña, Miguel
A1 Caldeira, Ilda
A1 Pedro, Soraia Inês
A1 Eguía Oller, Pablo
A1 Canas, Sara
K1 3309.29 Vino
K1 3302 Tecnología Bioquímica
K1 3328 Procesos Tecnológicos
AB Fourier transform infrared spectroscopy (FTIR) with Attenuated Total Reflection (ATR) combined with functional data analysis (FDA) was applied to differentiate aged wine spirits according to the ageing technology (traditional using 250 L wooden barrels versus alternative using micro-oxygenation and wood staves applied in 1000 L stainless steel tanks), the wood species used (chestnut and oak), and the ageing time (6, 12, and 18 months). For this purpose, several features of the wine spirits were examined: chromatic characteristics resulting from the CIELab method, total phenolic index, concentrations of furfural, ellagic acid, vanillin, and coniferaldehyde, and total content of low molecular weight phenolic compounds determined by HPLC. FDA applied to spectral data highlighted the differentiation between all groups of samples, confirming the differentiation observed with the analytical parameters measured. All samples in the test set were differentiated and correctly assigned to the aged wine spirits by FDA. The FTIR-ATR spectroscopy combined with FDA is a powerful methodology to discriminate wine spirits resulting from different ageing technologies.
PB Mathematics
SN 22277390
YR 2020
FD 2020-06-02
LK http://hdl.handle.net/11093/2400
UL http://hdl.handle.net/11093/2400
LA eng
NO Mathematics, 8(6): 896 (2020)
NO FCT - Foundation for Science and Technology | Ref. UIDB/05183/2020
DS Investigo
RD 01-oct-2023