Durum wheat adulteration detection by NIR spectroscopy multivariate calibration.
In the present work, we explored the possibility of using near-infrared spectroscopy in order to quantify the degree of adulteration of durum wheat flour with common bread wheat flour. The multivariate calibration techniques adopted to this aim were PLS and a wavelet-based calibration algorithm, recently developed by some of us, called WILMA. Both techniques provided satisfactory results, the percentage of adulterant present in the samples being quantified with an uncertainty lower than that associated to the Italian official method. In particular the WILMA algorithm, by performing feature selection, allowed the signal pretreatment to be avoided and obtaining more parsimonious models.
Cocchi
Marina
M
Dipartimento di Chimica, Università di Modena e Reggio Emilia, via Campi 183, 41100 Modena, Italy.
Durante
Caterina
C
Foca
Giorgia
G
Marchetti
Andrea
A
Tassi
Lorenzo
L
Ulrici
Alessandro
A