J. Planar Chromatogr. 11, 230-232 (1998). TLC of flavone derivatives (apigenin, apigenin-7-O-glucoside, luteolin, luteolin-4-O- and -7-O-glucoside) on RP-18 with methanol - water - acetic acid 25:25:3. Visualization by spraying with a methanolic solution of 1% diphenylboric acid aminoethyl ester (NP) and 5% polyethylene glycol (PEG). Preparative TLC was performed on conventional thick silica gel and RP-18 with ethyl acetate - formic acid - water 6:1:1 and methanol - water - acetic acid 25:25:3. The spots were analyzed by UV after extraction. Acid hydrolysis of the isolated flavonoids was carried out directly on the TLC plate after application by dipping (of the application zone) into 5 N HCl in methanol - water 1:1 and leaving at 110°C for 45 min to hydrolyze.

Planta med. 65, 383-385 (1999). Analytical TLC of shaminin {2-(2,4,5-trihydroxyphenyl)-3,5,7-trihydroxy-6-C-gluco- pyranosyloxy-4H-1-benzopyrano-4-one} on silica gel with ethyl acetate - methanol - water 8:2:1. Detection under UV 254 nm.

J. Agric. Food Chem. 49, 5848-5851 (2001). TLC of 3 anthocyanins (delphinidin-3-glucoside, cyanidin-3-glucoside, petunidin-3-glucoside) on cellulose with formic acid - hydrochloric acid - water 1:1:2 or n-butanol - acetic acid - water 4:1:5; upper phase. Detection under UV 254, 366 nm and in daylight.

J. Planar Chromatogr. 17, 22-25 (2004). HPTLC and TLC of caffeic acid, rosmarinic acid, caffeetannins and flavonoids on silica gel, amino-, cyano-, and RP-18-phases in a horizontal DS-chamber with a variety of mobile phases at room temperature. Acetone - acetic acid 17:3 was best mobile phase on the aminopropyl layer; water - methanol 3:2 on RP 18. Detection of the colored compounds under UV light at 365 nm before and after spraying with 2 % methanolic aluminum chloride solution, or in visible light after treatment with bis-diazotized sulfanilamide.

Pharmazie 61, 478-482 (2006). Analytical and preparative TLC of two steroidal glycosides 6-O-beta-D-glucopyranosyl-(1-4)-beta-D-glucopyronoside chlorogenin and 3-O-beta-D-glucopyranosyl-(1-4)-beta-D-glucopyranoside crestagenin on silica gel with chloroform - methanol - water 30:10:1. Detection by spraying with 40 % sulfuric acid followed by heating at 120 °C.

J. Liq. Chromatogr. Relat. Technol. 34, 1502-1517 (2011). HPTLC of glycyrrhizic acid in bulk drug and pharmaceutical formulations on silica gel with butanol - glacial acetic acid - water 7:1:2. Quantitative determination by absorbance measurement at 254 nm. The hRf of glycyrrhizin was 24. Linearity was 200-1000 ng/zone. Limits of detection and quantification were found to be 80 and 200 ng/band. The intermediate/inter-day/intra-day precision was below 0.6 % (n=3). Recoveries (by standard addition) were 98.1-99.5 %.

J. Planar Chromatogr. 28, 287-293 (2015). HPTLC of bacoside A in the leaves of Bacopa monnieri on silica gel with ethyl acetate - methanol - water 4:1:1. Detection by spraying with 1 % vanillin in 10 % methanolic sulfuric acid. Quantitative determination by absorbance measurement at 598 nm. The hRF value for bacoside A was 53. LOD and LOQ were 60 and 180 ng/zone, respectively. The intermediate precision was below 1 % (n=3). Recovery ranged between 97 and 100 %.

Planta Medica 82, 11/12, 1117-1121 (2016). TLC was applied for two purposes: first, to monitor the subfractionation of the methanol extract of the whole Calamus acanthophyllus (eluent and layer not given); second, to analyze the sugar composition of callaphylloside (a weakly cytotoxic pregnastanol saponoside). For this purpose, callaphylloside was heated for 3 h with HCl 2 N under reflux; TLC of the lyophilized and neutralized ethyl acetate extract of the mixture on silica gel with ethyl acetate – n-butanol – water 2:7:1 together with standards. The sugar moiety consisted in rhamnose and glucose (2 units of each, as confirmed through NMR of the compound)._x000D_