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. 2013 Feb 28;4:e201301007. doi: 10.5936/csbj.201301007

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© Commisso et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly cited.

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Two examples of LC-MS analysis, showing chromatograms representing two different matrices obtained using different ion sources. The x-axis shows the time in minutes and the y-axis shows the relative signal intensity. The underlying bars represent the chromatographic elution patterns which start at 5% (white) and increase to 75% (blue) or 100% (brown) of acetonitrile. In the chromatograms, polar compounds elute first, followed semi-polar and non-polar compounds. A: LC-ESI-MS/MS chromatogram of a grape berry methanolic extract. B: LC-APCI-MS/MS chromatogram of an Arabidopsis thaliana methanolic extract.