J. Planar Chromatogr. 22, 55-58 (2009). TLC of plaunotol in leaves of Croton stellatopilosus Ohba, on silica gel with chloroform - n-propanol 24:1 in a twin trough chamber saturated for 30 min. Quantitative determination by absorbance measurement at 220 nm. Recovery was 98.7 %. The plaunotol content of the leaves of C. stellatopilosus was highly variable (0.14 to 0.79 % w/w of dry weight).

J. Planar Chromatogr. 22, 157-161 (2009). Safed musli is the common name for Chlorophytum borivilianum, whereas shatavari is Asparagus racemosus, both of the liliaceae family. HPTLC of saponins and sapogenins on silica gel with chloroform - methanol - water 32:25:5 for saponins and with petroleum ether - ethyl actate 4:1 for sapogenins. Detection of saponins by spraying with anisaldehyde reagent and with Ehrlich’s reagent, followed by densitometric analysis at 620 and 510 nm. Detection of sapogenins by spraying with Liebermann Burchard reagent, followed by densitometric analysis at 580 nm.

Chromatographia 69 (5-6), 597-599 (2009). TLC of karanjin in the seeds of Pongamia pinnata on silica gel with toluene - ethyl acetate 7:3. Quantitative determination by absorbance measurement at 260 nm. The limit of detection was 100 ng, linearity was 50 - 300 ng. Four samples of P. pinnata from different geographical locations were screened for their karanjin content.

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.

J. AOAC Int. 92, 699-702 (2009). HPTLC of a dinitrophenyl-lysine derivative (produced by incubation with 1-fluoro-2,4-dinitrobenzene and hydolyzation with hydrochloric acid) on silica gel (prewashed with methanol) with n-propanol - 25 % ammonia 7:3 in a twin trough chamber. Quantitative determination by absorbance measurement at 360 nm. The method was linear (r2 = 0.9991) in the range from 12.5 to 125.0 ng/band. Repeatability (%RSD) and intermediate precision (%RSD) in matrix were 0.8 % and 3.6 %, respectively. Recoveries of spiked samples at two levels ranged from 72 to 85 % with RSD from 3 to 8%. This method is a reliable, high throughput and low cost analytical method for the salmon feed industry.

60th Indian Pharmaceutical Congress PG-262 (2008). HPTLC of withaferin A in Ashwagandha on silica gel aluminum layer with toluene - ethyl acetate - formic acid 5:5:1. Quantitative determination by absorbance measurement at 214 nm. The chromatograms of the tablet formulation showed a zone corresponding to standard withaferin A (hRf value 37) indicating the presence of the same in the herbal formulation. Linearity was in the range of 50-500 ng/spot. The concentration of withaferin A was 8.07 µg/tablet and 0.00134 % w/w in the tablet formulation.

J. AOAC Int. 92, 1021-1026 (2009). HPTLC of catechin and extracts from polyherbal oil formulations on silica gel using chloroform - acetone - 0.1 % formic acid 77:15:8 % in a twin trough chamber saturated for 20 min. Quantitative determination by absorbance measurement at 296 nm. The limit of detection and quantification was 6 and 20 ng/spot, respectively.

J. Chinese Pharm. Standard 10 (4), 284-286 (2009). TLC of Naolibao pill extracts on silica with n-hexane - ethyl acetate 5:1. Qualitative identification by detection under UV 254 nm and 365 nm. The method is simple, rapid, reliable, and suitable for the quality control of the TCM formulation.