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Chromatographic Fingerprints ofTwenty Salvia Species

ing strategy that can be followed when dealing with chromatographic fin-gerprints of plant extracts.

Many different chemometric techniąues are suitable for exploratory analysis of chromatographic data. Among these, principal component analysis (PCA) has attracted most attention, because it enables study of dif-ferences among samples and acquisition of Information on contributions of the original variables. For chromatographic signals, one can pinpoint rele-vant hngerprint regions that contain information vałid for explanation of data structure observed on the score plot. Thus, it is potentially possible to collect a specific sample fraction and perform additional analyses that can support identification of the compounds of interest present in that fraction.

By applying PCA to fingerprints of the volatile fraction of different Salina L. species it was possible to discover important regions explaining the differences among the samples scrutinized. The differences among the samples are mostly because of the presence of camphene, limonene, and eucalyptol.

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