Figure 1.
HPLC-PDA-ESI-MS polyphenolic fingerprint of B. incana leaf (A) and flowering top (B) hydroalcoholic extracts. Column: Ascentis Express C18, 15 cm × 4.6 mm, 2.7 μm d.p. (ESI, negative ionization mode). For peak identification, see Table 1.
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