¹H NMR and UV-visible data fusion for determining Sudan dyes in culinary spices

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• 作者：Carolina V. Di Anibal^a ; M. Pilar Callao^a ; Itziar Ruis&#xe1 ; nchez ; ^a ; ^{itziar.ruisanchez@urv.cat}
• 关键词：Variable level data fusion ; Decision level data fusion ; UV-visible ; ¹H NMR ; Fuzzy aggregation connectives ; Food adulteration
• 刊名：Talanta
• 出版年：2011
• 出版时间：15 May 2011
• 年：2011
• 卷：84
• 期：3
• 页码：829-833
• 全文大小：512 K

文摘

Two data fusion strategies (variable and decision level) combined with a multivariate classification approach (Partial Least Squares-Discriminant Analysis, PLS-DA) have been applied to get benefits from the synergistic effect of the information obtained from two spectroscopic techniques: UV-visible and ¹H NMR. Variable level data fusion consists of merging the spectra obtained from each spectroscopic technique in what is called “meta-spectrum” and then applying the classification technique. Decision level data fusion combines the results of individually applying the classification technique in each spectroscopic technique. Among the possible ways of combinations, we have used the fuzzy aggregation connective operators. This procedure has been applied to determine banned dyes (Sudan III and IV) in culinary spices. The results show that data fusion is an effective strategy since the classification results are better than the individual ones: between 80 and 100 % for the individual techniques and between 97 and 100 % with the two fusion strategies.