J. Planar Chromatogr. 28, 42-47 (2015). HPTLC of (1) homoeriodictyol and (2) persicogenin in the methanol extract of the aerial parts of Rhus retinorrhoea and Rhus tripartita on silica gel with toluene - ethyl acetate - methanol 16:4:1. Quantitative determination by absorbance measurement at 293 nm. The hRF values of (1) and (2) were 30 and 48. Linearity was between 100 and 800 ng/zone for both, (1) and (2). The intermediate intra-day and inter-day precisions were below 2 % (n=6). The LOD and LOQ were 26 and 77 ng/zone for (1) and 31 and 92 ng/zone for (2), respectively. Recoveries were in the range of 98.9-99.5 % for (1) and 98.3-99.2 % for (2).

Rev. Bras. Farmacogn. 26, 197-202 (2016). HPTLC of tannins (1), flavonoids (2), anthraquinones (3), terpenes (4), cardiotonic glycosides (5) and alkaloids (6) in Myracrodruon urundeuva on silica gel with toluene – acetic acid – formic acid 70:167:14 for (1), ethyl acetate – methanol – water 8:1:1 for (2), toluene – acetone – chloroform 8:5:7 for (3), hexane – ethyl acetate 1:1 for (4), ethyl acetate – methanol – water 20:3:2 for (5), and ethyl acetate – formic acid – acetic acid – water – ethyl methylketone 86:16:23:47:78 for (6). Detection by spraying with 1 % potassium ferricyanide – 2 % iron(III)chloride 1:1 for (1), 2 % aluminium chloride for (2), 5 % potassium hydroxide for (3), anisaldehyde-sulfuric acid reagent for (4), Kedde reagent for (5) and Dragendorff reagent for (6).

Planta Medica 82 (14), 1274-1278 (2016). Preparative TLC on RP-18 (with acid stable fluorescence indicator) with methanol – water 2:3 to purify benzophenone derivatives (riflophenone 2-O-β-glucopyranoside, riflophenone 3-C-β-glucopyranoside) from two hydromethanolic subfractions of an ethyl acetate fraction of a methanolic extract of Cyclopia genistoides herb. Moreover, rotation planar chromatography on silica gel with a gradient of cyclohexane – acetone 1:0 to 0:1 for the subfractionaction of a dichloromethane fraction of the same extract, as a step for the isolation of two pterocarpans (maackiain and hydroxymaackiain).

Phytochem. Anal. 28, 87-92 (2017). HPTLC fingerprint of the aerial parts of Justicia secunda on silica gel with chloroform – methanol – water 6:4:1. Detection by dipping into 200 mL enzyme solution (2000 U of alpha-D-glucosidase dissolved in 200 mL buffer solution prepared with 10 g sodium acetate in 250 mL double-distilled water, pH 7.5 with acetic acid), followed by incubation for 1 h in a humid desiccator and dipping into 200 mL of substrate solution (2 mg/mL 2-naphthyl-alpha-D-glucopyranoside in 50 % aqueous ethanol and 2.5 mg/mL Fast blue salt B in double-distilled water, mixed 1:1 before applying). Detection under UV 366 nm.

J. Planar Chromatogr. 31, 429-436 (2018). HPTLC of _x000D_caffeic acid (1), ferulic acid (2), β-sitosterol (3), and lupeol (4) on silica gel with toluene – ethyl acetate – formic acid 85:15:1. Quantitative determination by absorbance measurement at 366 nm for (1) and (2) and 580 nm for (3) and (4). The hRF values for (1) to (4) were 14, 29, 48 and 63, respectively. Linearity ranged between 100-600 ng/zone for (1) and (2) and 200-700 ng/zone for (3) and (4). LOD and LOQ were 49 and 149 ng/zone for (1), 93 and 282 ng/zone for (2), 194 and 589 ng/zone for (3) and 36 and 109 ng/zone for (4), respectively. The intermediate precision was <2 % (n=6). Average recovery was 99.6 % for (1), 99.9 % for (2), 99.2 % for (3) and 99.5 % for (4).

HPLC und DC unter besonderer Berücksichtigung der Prüfungsvorschrift gemäss Ph. EUR. II. ( HPLC and TLC analysis of the rhamnus fallax bark in particular consideration of the identification according to the Ph. EUR. II method.) Dtsch. Apoth. Ztg. 125, 101-105 (1985).TLC of the characteristic xanthorhamnin on silica with ethyl acetate - methanol - water 100:17:13 as a yellow fluorescing spot using the diphenylboryloxyethylamine reagent as a proper medium for the identification of the rhamnus fallax bark.

J. Chromatogr. 366, 407-411 (1986). TLC of flavonoid aglycones on octadecyl-bonded silica with 5 different solvent systems. Discussion of the chromatographic behaviour and the retention mechanism. Investigation of the best elution conditions. A few applications are reported.

acanthoides. Biochemical Systematics and Ecology 16, 265-268 (1988). TLC of flavonoids (luteolin, luteolin 7-O-galactoside, luteolin 7-O-digalactoside, luteolin 7-O-monoglucoside, luteolin 7-O-diglucoside, luteolin 7-O-rutinoside, apigenin 7-O-glucoside) on polyamide with water - n-butanol - acetone - dioxane 14:3:2:1 (aqueous), dichloroethane - methanol - MEK - water 50:25:21:4 (organic). Detection under UV, after exposing to NH3 under UV, after spraying with natural dye reagent A in methanol.