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  Indian J Med Microbiol
 

Figure 1: High performance liquid chromatography with diode array detection chromatograms and on-line ultraviolet (UV) spectrum of the standard of gallic acid, Qualea parviflora hydroalcoholic extract and Qualea grandiflora hydroalcoholic extract; chromatographic conditions: Dionex, Acclaim® 120 (particle diameter 5 mm, 250 × 4.60 mm); gradient of 5% trifluoroacetic acid in water (solvent A) and methanol (solvent B), 0–10 min 0–15% B; to 12 min 40% B; to 14 min 74% B; to 16 min 15% B; to 18 min 15% B at a flow rate of 1.0 mL/min; UV detection between 190 and 400 nm

Figure 1: High performance liquid chromatography with diode array detection chromatograms and on-line ultraviolet (UV) spectrum of the standard of gallic acid, <i>Qualea parviflora</i> hydroalcoholic extract and <i>Qualea grandiflora</i> hydroalcoholic extract; chromatographic conditions: Dionex, Acclaim<sup>®</sup> 120 (particle diameter 5 mm, 250 × 4.60 mm); gradient of 5% trifluoroacetic acid in water (solvent A) and methanol (solvent B), 0–10 min 0–15% B; to 12 min 40% B; to 14 min 74% B; to 16 min 15% B; to 18 min 15% B at a flow rate of 1.0 mL/min; UV detection between 190 and 400 nm