J. Planar Chromatogr. 22, 127-131 (2009). HPTLC of 6-gingerol, extracts of Suprabha and market samples of ginger on silica gel (prewashed with methanol) with n-hexane - acetone 18:7 in a twin trough chamber saturated for 4 min at 20 +/- 4 °C and 36 +/- 3 % relative humidity. Quantitative determination by absorbance measurement at 286 nm. The limit of detection and quantification was 40 and 150 ng/band, respectively.

J. Chinese Trad. Patent Med. 29 (4), 536-540 (2007). TLC of Yangxue Fuzheng (a traditional Chinese patent medicine) capsule extracts on silica gel with 1) chloroform - methanol - water 13:7:2, 2) chloroform - ethyl acetate - methanol - water 15:40:22:10, 3) ethyl acetate - butanone - methanol - water 10:1:1:1, 4) chloroform - methanol 40:3, 5) petroleum ether (60-90 ºC) - ethyl acetate 1:1. Detection 1) under UV 365 nm, 2) in daylight after spraying with 10 % sulfuric acid in ethanol and heating at 105 ºC.

Phytochem. Anal. 20, 421-426 (2009). HPTLC of delta-9-tetrahydrocannabinol in the flowertops of Cannabis sativa on silica gel with chloroform with chamber saturation for 20 min. Quantitative determination by absorbance measurement at 206 nm. Derivatization by dipping in Fast Blue B solution for 5 s. The hRf value of delta-9-tetrahydrocannabinol was 47 and selectivity regarding matrix was given. Linearity was given between 50 and 500 ng/zone. The limit of quantification and detection was 50 and 10 ng/zone, respectively. The intra- and inter-day repeatability (%RSD, n = 9) were not higher than 5.0 %. Recovery was 85.8 % for delta-9-tetrahydrocannabinol in decarboxylated Cannabis samples. The method was shown to be comparable within a small degree of error (0.5 %) to results from a validated HPLC method.

var. cannabifolia (Sieb. et Zucc.) Hand. -Mazz. and Oleum Viticis Negundo by thin-layer chromatography) (Chinese). J. Chinese Trad. Med. & Pharm. (Shizhen Guoyi Guoyao) 20 (11), 2799-2800 (2009). TLC of TCM drug extracts on silica gel with petroleum ether (60-90 ºC) – ethyl acetate 100:3. Detection by spraying with a solution of 5 % vanillin – 10 % sulfuric acid in ethanol 1:10 followed by heating at 105 °C until coloration, evaluation in visible and UV light.

Abstract No. 9185, IHCB (2009). HPTLC of hydro alcoholic extracts of Berberis aristata on silica gel with benzene - ethyl acetate - diethyl amine 6:3:1. Detection by spraying with AlCl3 reagent (for estimation of flavonoids) or with Folin Ciocalteu reagent (for total phenolic content). The fingerprint profile was optimized using two different mobile phases: n-butanol - acetic acid - water 14:1:5 and n-propanol - formic acid - water 90:1:9. The extract showed 6 different spots and was found to contain 13.5 % w/w of berberin.

J. Planar Chromatogr. 22, 305-307 (2009). TLC of diosgenin in methanolic extracts of fresh leaves and bulbs on silica gel with n-hexane - acetone 4:1. Detection by spraying with 25 % sulfuric acid in methanol and heating at 100 °C for 2 min. Quantitative determination by absorbance measurement at 540 nm.

Abstract No. C-274, 61st IPC (2009). TLC of petroleum ether and chloroform extracts of Actaea spicata roots on silica gel with n-hexane - chloroform 9:1 (for petroleum ether extracts) and toluene - ethyl acetate - glacial acetic acid 80:50:15:1 (for chloroform extracts). Detection by spraying with 50 % methanolic sulfuric acid followed by heating at 105 °C. Petroleum ether extracts showed 2 bands, whereas chloroform extracts showed 3 bands.

Food Chem. 121, 185-190 (2010). TLC of arbutin in the leaves and flowers of Origanum majorana and Origanum vulgare on silica gel with ethyl acetate - methanol - water 77:13:10. Detection by spraying with 2.5 % dibromchinochlorimide solution in ethanol. The hRf of arbutin was 47.