Determination of the geographic origin of dried kelp by inorganic analysis
2009
Hattori, S.(Food and Agricultural Materials Inspection Center, Kobe (Japan). Kobe Regional Center) | Tukada, M. | Houmura, Y.
A technique to determine the geographic origin of dried kelp was developed by using 250 samples from Japan and from China. Twelve elements contained in dried kelp were determined by ICP-MS. We developed four linear discriminant analysis (LDA) models for each kelp calibrated with concentrations of 2 elements (Mn and Ba) chosen by backward stepwise regression. These LDA models distinguished the origin of dried kelp with 97.5-100% certainty and distinguished with 97.5-100% certainty on the validation test by 10-fold cross validation. Thus, we could determine the geographic origin of dried kelp with a high degree of accuracy using these discrimination models.
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