59th Indian Pharmaceutical congress F-217, 442, (2007). HPTLC of chloroform, ethanol and water extracts of Nothapodytes foetida on silica gel with toluene - ethyl acetate - glacial acetic acid 25:5:1. Densitometry at 366 nm. The hRf value of camptothecin was 22. Linearity was between 0.5 and 5 ng/zone. All commercial samples of the plant had a similar fingerprint profile.

Phytochem. Anal. 19, 353-358 (2008). HPTLC of galanthamine in the bulbs of Narcissus cv. on silica gel with chloroform - methanol 9:1 with chamber saturation for 30 min. Quantitative determination by absorbance measurement at 288 nm. The hRf value was 72 and selectivity regarding matrix was given. Linearity was in the range of 0.25 and 7.5 µg/spot. The limits of detection and quantification were 47 and 142 ng/spot, respectively. Recovery was 97.8 %. No significant intra- and interday variation was observed. The method proved to be precise, accurate, and rapid in comparison with a reference HPLC method.

Indian Drugs 45 (3), 233-225 (2008). HPTLC of atisine in Aconitum heterophyllum on silica gel with toluene - ethyl acetate - diethylamine 7:2:1. Densitometric evaluation at 274 nm. Detection by spraying with Dragendorff reagent followed by spraying with 10 % sodium nitrate. Densitometric evaluation of reddish brown zones at 520 nm. Linearity of atisine was between 10 and 60 ng/spot.

J. Liq. Chromatogr. Relat. Technol. 30, 2617-2628 (2007). TLC and HPTLC of monoterpenes, e. g. menthol and menthone from peppermint, on silica gel with toluene - ethyl acetate 3:7, 4:6, ... , 9:1, and 10:0 in a horizontal chamber. Detection with methanolic vanillin - sulfuric acid reagent and under UV 254 nm. Flavonoids from hawthorn, Passiflora incarnata, hop, cacao, as well as tea were also determined by TLC and OP TLC.

Chromatographia 68 (9-10), 877-880 (2008). TLC of betulinic acid in Nymphoides macrospermum on silica gel with hexane - ethyl acetate - acetic acid 700:300:3. Detection by spraying with anisaldehyde-sulphuric acid reagent. Quantification by absorbance measurement at 540 nm. Linearity was in the concentration range of 100–600 ng/spot. The method is suitable for the routine quality control of Granthika Tagara.

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.

J. Agric. Food Chem. 55, 7489-7494 (2007). HPTLC of fruit powder and commercial products of Noni (Morinda citrifolia) on silica gel with chloroform – methanol 9:1 or chloroform – methanol – water 13:6:1. Detection under UV 254 and 366 nm after spraying with vanillin reagent (1 % vanillin in ethanol containing 2 % sulphuric acid), followed by heating at 105 °C. The following compounds were identified as markers (hRf): ursolic acid (60), linoleic acid (55), scopoletin (53), 3-methyl-1,3-butanediol (27).

60th Indian Pharmaceutical Congress PA-214 (2008). HPTLC of cinnamic acid (in plant raw material, herbal extracts and pharmaceutical dosage forms) on silica gel with chloroform - methanol 4:1 in a saturated twin trough chamber at room temperature (25 °C). Quantitative determination by absorbance measurement at 277 nm. The hRf value for cinnamic acid was 50. The method was linear in the range of 700-1400 ng/spot.