Planta Med. 71, 1078-1081 (2005). Preparative TLC of melicopone acetophenone derivative [1,2-bis(4-hydroxy-3-methoxyphenyl)ethanone] and 29 known compounds on silica gel with dichloromethane - ethyl acetate 5:1. Detection under UV light at 254 nm.

Planta Med. 72, 424-429 (2006). Preparative TLC of furowanin A, millewanin F, isocrysenegalensein E, 8-gamma,gamma-di-gamma,gamma-dimethylallylwighteone, enchressone b10, 6,8-di-gamma,gamma-dimethylallylorobol on silica gel with n-hexane - acetone 3:1, chloroform - acetone 24:1 and 9:1. Detection under UV light at 254 nm.

J. Chinese Trad. Patent Med. (Zhongchengyao) 27 (7), 780-782 (2005). TLC of Qiwei Ketengzi pills on silica gel with benzene - methanol - formic acid 180:30:2. Detection by spraying with 5 % vanillin - sulfuric acid solution followed by heating at 105 ºC until the spots are visualized. Identification by fingerprint techniques. Quantification of vitexicarpin by HPLC. The results for three batches of real life samples are given.

J. Chinese Trad. Patent Med. (Zhongchengyao) 27 (7), 783-785 (2005). TLC of ecdultin in Bazi Bushen capsules on silica gel with benzene - ethyl acetate 30:1. Detection under UV 365 nm. Quantitative determination of ecdultin by fluorescence measurement at 320 nm. Validation of the procedure by investigation of the optimum excitation wavelength; linearity range (0.022 - 0.13 µg/spot, R = 0.9998); repeatability (1.5 %, n = 6); precision (0.87 %, n = 6 within plate and 1.42 %, n= 6 plate-to-plate); and standard addition recovery (98.7 %, RSD = 1.83 %, n = 6). The results for six batches of real life samples are given.

J. Planar Chromatogr. 19, 398-400 (2006). HPTLC of curcumin, piperine, and thymol on silica gel, pre-washed with methanol, without chamber saturation with toluene - ethyl acetate - methanol 18:2:1. Quantitative determination by absorbance measurement at 420 nm for curcumin, 333 nm for piperine, and 277 nm for thymol. Limit of detection for curcumin was 25 ng, for piperine 5 ng, and for thymol 50 ng. Rapid identification of the three compounds is also possible by spraying the plate with anisaldehyde in sulfuric acid reagent.

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.

Pharmazie 60, 455-457 (2005). Preparative TLC of nervogenic acid, nervogenic acid methyl ether, 2,2-dimethyl-8-(3-methyl-2-butenyl)-2H-chromene-6-carboxylic acid, dillapional, dillapiol aldehyde, N-trans-feruloyltyramine, omega-hydroxyisodillapiole, 4-hydroxy-3-(3-methyl-2-butenyl)benzoate, and three new 4-hydroxy-benzoic acid derivatives, 4-methoxy-3,5-bis-(3-hydroxy-3-methyl-1-butenyl)benzoate, 3-hydroxy-2-(1-hydroxy-1-methylethyl)-2,3-dihydroxybenzofuran-5-carboxylic acid, and 3-hydroxy-2-(1-hydroxy-1-methylethyl)-2,3-dihydrobenzofuran-5-carboxylic acid methyl ester on silica gel with chloroform - ethyl acetate - formic acid - 90:10:1; chloroform - methanol 9:1; 8:2; and ethyl acetate - formic acid - water 82:9:9. Detection under UV light.

Indian Drugs 43 (12), 989-982 (2006). HPTLC of lupeol in a methanolic extract of powdered Vernonia cinerea L. on silica gel with dichloromethane - toluene - acetone - methanol 30:50:5:3. Detection by spraying with anisaldehyde reagent. Quantitative determination by absorbance measurement at 581 nm. The concentration of lupeol in Vernonia cinerea L. was found to be 2.01 µg. The method was validated and can be used for routine quality control of Vernonia cinerea L. including quantitation of lupeol.