Figure 1From: The Saccharomyces cerevisiae transcriptome as a mirror of phytochemical variation in complex extracts of Equisetum arvense from America, China, Europe and IndiaChromatographic characterization of the E. arvense extracts to identify quantitative and qualitative differences in phenyl carboxylic acid and flavonoid composition. (A) A TLC plate developed with natural product / polyethylene glycol reagent, viewed under 366 nm UV light. (B) Stacked LC-PDA chromatograms observed at 280 nm. The letter “a” denotes dicaffeoyltartaric (chicoric) acid, which was only detected in the sample from India. Rf: relative front. (C) Stacked LC-ESI(−)-MS chromatograms. (D) The number of peaks detected in the TLC, LC-PDA and LC-MS chromatograms using the msProcess peak detection software. Means and standard deviations were calculated from biological replicates. * Represents a statistical significance of p < 0.05.Back to article page