J. Ethnopharmacol. 156, 309-315 (2014). HPTLC of (1) phyllanthin and (2) ellagic acid in the whole plant of Phyllanthus rheedei on silica gel with toluene - ethyl acetate - formic acid 6:2:1, detection at UV 366 nm. The hRF values of (1) and (2) were 47 and 27, respectively. Fractions rich in phyllanthin and ellagic acid showed anti-HBV and hepatoprotective activity.

Planta Medica 82, 09/10, 888-896 (2016). Preparative TLC on silica gel 1) to purify wortmin (from the sclerotiorin group of metabolites) from an apolar fraction of an ethyl acetate extract of Talaromyces tratensis KUFA 0091, developed with chloroform – petroleum ether – ethyl acetate 8:1:1; 2) to isolate tratenopyrone (new isocoumarin derivative) from a subfraction of the same extract, developed with chloroform – acetone – formic acid 10:10:1; 3) to isolate circinophoric acid (new diphenyl ether derivative) from a fraction of an ethyl acetate extract of Sporidesmium circinophorum KUFA 0043, developed with chloroform – acetone – formic acid 60:40:1. The yields calculated from the raw extracts were 512 ppm, 406 ppm and 224 ppm, respectively.

J. Liq. Chromatogr. Relat. Technol. 40, 239-246 (2017). Review of TLC methods for the analysis of polyphenols, dyes, carboxylic acids, biogenic amines, and vitamin C in quality assessment and authentication of non-fermented or fermented beverages derived from fruits.

CBS 119 (2017) 14-15. HPTLC of Cannabis sativa and standards cannabidiol (CBD), tetrahydrocannabinol (THC), and cannabinol (CBN) on silica gel with n-heptane – diethyl ether – formic acid 75:25:0.3 with chamber saturation for 20 min to a migration distance of 70 mm. Detection by spraying with Fast Blue salt B reagent (250 mg o-dianisidine bis(diazotized) zinc double salt in 10 mL water, 25 mL methanol and 15 mL dichloromethane), evaluation under white light. Quantitative determination by absorbance measurement at 210 nm prior to derivatization (for cannabinoid acids 285 nm). For the screening of THC-free samples the limit test can be used. The EU limit of 0.2 % is easily detected with or without detection. The %RSD of the assay prior to derivatization is 1.5 % and after derivatization 2.1 %. The LOD is 10 ng/zone.

Planta Med. 83(09), 812-818 (2017). Some of the column subfractions obtained (with different mixtures of hexane – acetone – isopropanol) from an ethyl acetate extract of Cratoxylum cochinchinense twigs and boughs were submitted to a preparative TLC on silica gel for the isolation of the following xanthones and anthracenones: (1) β-mangostin, cochinchinone and cratoxanthone D with chloroform – acetone 10:1, (2) allanxanthone by three-stage elution with benzene – acetone 10:1, n-hexane – ethyl acetate 3:1, and n-hexane – acetone 3:1, (3) cratoxanthone A by similar three-stage elution (third step: chloroform – acetone 10:1), (4) visminone F by two-step elution with benzene – acetone 10:1, and isopropanol – acetone 5:1, (5) cratoxanthone B and garcinone E by a two-step elution with isopropanol – acetone 4:1, and n-hexane – acetone 3:1, (6) α-mangostin and mangostenol by a two-step elution with chloroform – acetone 20:1, and n-hexane – isopropanol – acetone 5:5:1, (7) cratoxanthone C by a two-step elution with benzene – ethyl acetate 5:1, and chloroform – acetone 20:1.

(Dryopteridaceae, pteridophyte). Helv. Chim. Acta 68, 1251-1274 (1985). TLC of various complex phloroglucinols on silica impregnated with citric acid - phosphate buffer using methanol - isopropyl ether - cyclohexane 10:35:55, chloroform - hexane - ethanol 45:45:10, chloroform - hexane - ethanol - acetic acid 45:35:16:4 or ethyl acetate - cyclohexane - acetic acid 60:35:5. Detection by UV 254 and 366 nm and by spraying with a 0.1 % sol. of "fast blue salt B". Checking of doubtful spots was achieved by scraping, elution with ethyl acetate/ether and rechromatography in another system.

J. Chromatogr. 431, 431-437 (1988). TLC of chlorinated phenols on silica with a) benzene - methanol 95:5, b) petrol ether - benzene 1:1, c) hexane - acetone 30:10, d) benzene - chloroform 70:30 and e) hexane - benzene - ethyl acetate 6:4:1. Detection by spraying with ammoniacal acetone solution of silver nitrate and exposure to UV light for 5 min. Combination of TLC and GC methods.

Planta Med. 57, 176-180 (1991). TLC of caffeic acid derivatives, of lipophilic flavones and of flavonol glycosides on silica with ethyl acetate - formic acid - acetic acid - water 100:5:5:13 or with dichloromethane - methanol 95:5, and on microcrystalline cellulose with 15% acetic acid. Purification of flavones by preparative TLC on polyamide with toluene - petrol ether - MEK - methanol 30:60:5:5.