Journal
FOOD CHEMISTRY
Volume 266, Issue -, Pages 79-89Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2018.05.084
Keywords
Data fusion; Raman spectroscopy; NIR spectroscopy; PTR-ToF-MS; Honey; PLS-DA
Funding
- Italian Ministero della Salute, Italy [RF-2009-1511573]
- THOT (Associazione per il sostegno alla Ricerca scientifica ONLUS, Torino, Italy)
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The characterization of 72 Italian honey samples from 8 botanical varieties was carried out by a comprehensive approach exploiting data fusion of IR, NIR and Raman spectroscopies, Proton Transfer Reaction - Time of Flight - Mass Spectrometry (PTR-MS) and electronic nose. High-, mid- and low-level data fusion approaches were tested to verify if the combination of several analytical sources can improve the classification ability of honeys from different botanical origins. Classification was performed on the fused data by Partial Least Squares Discriminant Analysis; a strict validation protocol was used to estimate the predictive performances of the models. The best results were obtained with high-level data fusion combining Raman and NIR spectroscopy and PTR-MS, with classification performances better than those obtained on single analytical sources (accuracy of 99% and 100% on test and training samples respectively). The combination of just three analytical sources assures a limited time of analysis.
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