Thin-layer chromatography of selected Achillea species on silica and CN silica stationary phases with fingerprint and chemometrics

Fourteen different Achillea species were extracted using the Soxhlet apparatus with dichloromethane and then methanol as solvents. The obtained dichloromethane and methanolic extracts were analyzed using thin-layer chromatography (TLC) and high-performance thin-layer chromatography (HPTLC) to obtain fingerprint profiles. The first chromatographic system consisted of silica gel as adsorbent, a mixture of toluene—ethyl acetate—formic acid...