Indian Drugs 46(2), 109-112 (2009). HPTLC of chloroform extracts of stem bark of Terminalia alata and Terminalia arjuna on silica gel with chloroform - methanol 9:1. Arjunolic acid and maslinic acid were used as marker compounds. Detection by treatment with vanillin-sulphuric acid reagent. Quantitative determination by absorbance measurement at 254 nm. The fingerprint profile along with other physico-chemical data helped in the correct authentification and standardization of both plant species.

60th Indian Pharmaceutical congress PA-235 (2008). HPTLC of strychnine and brucine (in seeds of Strychnos Nux Vomica) on silica gel with chloroform - methanol - ammonia 38:2:1. Quantitative determination by absorbance measurement at 258 nm (strychnine, hRf value 29) and 271 nm (brucine, hRf value 21). The method was linear in the range of 100-1000 ng/spot (both compounds). The method was suitable for standardization of several herbal formulations containing nux vomica as an ingredient.

Abstract No. 9162, IHCB (2009). HPTLC of glycyrrhizin in methanolic (70 %) extracts of Glycyrrhiza glabra on silica gel with chloroform - methanol - water 130:72:15. Quantitative determination by absorbance measurement at 254 nm and at 420 nm after spraying with anisaldehyde reagent. The method was linear in the range of 0.8-3.8 µg/spot. The limit of detection and quantification was 0.16 and 0.52 µg/spot, respectively. Glycyrrhizin was used as bioactive marker for quality control.

J. Planar Chromatogr. 22, 439-443 (2009). HPTLC of jatrorrhizine in methanolic extracts of the stem of the ’heavenly elixir’ on silica gel with ethyl acetate - isopropanol - 10 % ammonia 3:5:3 in a twin trough chamber saturated for 5 min. Detection under UV 254 nm and after derivatization with Dragendorff’s reagent. Quantitative determination by absorbance measurement at 344 nm.

Pharmazie 64, 350-351 (2009). Preparative TLC of pernambucone (3,8-dimethyl-5-isopropyl-2,3-dihydro-1H-azulene-1,6-dione), orobanone and extracts of stem bark on silica gel with hexane - ethyl acetate 4:1 and dichloromethane - methanol 39:1. Detection in visible light.

Abstract No. F-287, 61st IPC (2009). HPTLC of saponins (a mixture of the seven different sapindosides A, B, C, D, E, F, and G) in the pericarp of Sapindus mukorossi on silica gel with chloroform - methanol - water 50:14:1. Detection by derivatization with sulfuric acid reagent and evaluation under visible light. The hRf values of sapindosides A to G are 19, 26, 41, 48, 59, 67, and 75. Quantitative determination by absorbance measurement at 550 nm after derivatization. The linearity ranges for sapinosides A to G were 0.9-4.3, 0.7-5.4, 3.3-15.2,1.2-9.7, 2.7-12.5, 0.2-1.3, 0.3-1.5 µg/band. The pericarp contained 15.2 % w/w of total sapindosides.

J. Ethnopharmacol. 124, 450-456 (2010). HPTLC fingerprinting of Eclipta alba on silica gel with chloroform - ethanol - water 35:10:2. Densitometric evaluation at 254 nm. Major compounds identified were coumestants and wedelolactone, with hair growth promoting activity.

Abstract No. C-161, 61st IPC (2009). An HPTLC method is reported for estimation of andrographolides bitter principles in Andrographis paniculata, popularly known as kalmegh. HPTLC of methanolic and water extracts on silica gel with chloroform - methanol 7:1 in a saturated twin trough chamber. Quantitative evaluation by absorbance measurement at 231 nm. The method was found to be linear in the range of 1-5 µg/band. Both extracts were found to contain andrographolides. Maximum yields of andrographolides were observed in extracts prepared by refluxing.