Eupafolin and Ethyl Acetate Fraction of Kalanchoe gracilis Stem Extract Show Potent Antiviral Activities against Enterovirus 71 and Coxsackievirus A16
Figure 5
HPLC fingerprint profiles and UV/Vis absorption spectra of EA and BoOH fractions. Marker components (caffeic acid, ferulic acid, quercetin, eupafolin, and kaempferol), as well as both fractions of KGS extract, were analyzed by HPLC with C-18 reverse phase column, eluents detected at 345 nm with a 2996 PDA detector (a). Maximum absorption wavelengths of caffeic acid, quercetin, eupafolin, and chromatographic peaks 3 and 7 were measured by UV/Vis absorption spectra (200–360 nm) ((b), (c)).
