Thin-layer chromatographic fingerprint of selected Paulownia species with chemometrics and antioxidant activity

Sixty-seven methanolic extracts from leaves of different genetic Paulownia species were analyzed using thin-layer chromatographic (TLC) technique to obtain their chromatographic fingerprint profiles. Analysis was performed using the TLC silica gel 60 F254 plates and mobile phase consisting of ethyl acetate–formic acid–acetic acid–water (12:1,5:1,5:4; v/v/v/v) with Naturstoff reagent derivatization. Next, the images of fingerprint chromatograms...