J. Planar Chromatogr. 22, 377-380 (2009). HPTLC of stigmast-5-en-3beta-O-D-glucoside and bark extracts on silica gel with chloroform - methanol - water 33:7:4 in a saturated twin trough chamber. Detection by derivatization with anisaldehyde reagent followed by heating at 105 °C for 5 min. Quantitative determination by absorbance measurement at 515 nm.

J. Planar Chromatogr. 22, 359-362 (2009). HPTLC of aloenin in aloe juice, tablets, and liquid extracts on silica gel with ethyl acetate - 95 % ethanol - water 20:3:1 at room temperature in a saturated chamber. Detection by immersion for 1 s in freshly prepared 5 % sodium hydroxide solution in 95 % ethanol, followed by heating at 100 °C for 5 min. Quantitative determination by absorbance measurement at 365 nm.

60th Indian Pharmaceutical Congress PG-246 (2008). HPTLC of biomarkers such as curcumin, charantin, and swertiamarin in some polyherbal formulations on silica gel with benzene - methanol 4:1 (for charantin), chloroform - methanol - formic acid 74:4:1 (for curcumin), and ethyl acetate - methanol - water 77:15:5 (for swertiamarin). Quantitative determination by absorbance measurement at 536 for charantin (hRf value 33), 425 nm for curcumin (hRf value 89), and 238 nm for swertiamarin (hRf value 54).

J. Pharma. Research 8(4), 187-191 (2009). HPTLC of abacavir sulphate and lamivudine on silica gel with methanol - acetone - n-butyl acetate 1:1:2. Quantitative determination by absorbance measurement at 284 nm. The hRf value of abacavir sulphate was 58 and of lamivudine 35. Linearity of abacavir sulphate and lamivudine was in the range of 240-1200 ng/spot and 120-600 ng/spot, respectively. The limit of detection and quantification of abacavir sulphate was 0.7 and 2 ng/spot, respectively, and of lamivudine 1 and 3 ng/spot, respectively.

J. Planar Chromatogr. 22, 297-300 (2009). HPTLC of chlorogenic acid and of plant extracts on silica gel with ethyl acetate - formic acid - water 10:2:3 and ethyl acetate - formic acid - acetic acid - water 100:11:11:21 in a saturated horizontal chamber. Quantitative determination by absorbance measurement at 320 nm. Qualitative detection by derivatization with natural products reagent (1 % in methanol) followed by treatment with 5 % PEG 400 in ethanol.

Abstract No. F-257, 61st IPC (2009). HPTLC of tadalafil on silica gel with n-hexane - ethyl acetate - acetonitrile 14:3:3. The hRf value was 65. Quantitative determination by absorbance measurement at 215 nm. The method was linear in the range of 10-60 ng/band. The drug was subjected to different stress conditions (acid, alkali, oxidative, photodegradation, thermal) and showed degradation under all stress conditions. Degradation products and excipients of the formulation were well separated from the main component.

J. Planar Chromatogr. 23, 230-232 (2010). HPTLC of (+)-catechin, (-)-epicatechin, (-)-epigallocatechin, (-)-epigallocatechin gallate, (-)-epicatechin gallate, procyanidin B2, procyanidin A2, and methylxanthines (theobromine and caffein) on cellulose with n-propanol - water - acetic acid 20:80:1 in a horizontal chamber. Detection by dipping for 1 s into 4-dimethylaminocinnamaldehyde detection reagent. Quantitative determination by absorbance measurement at 655 nm. By densitometry LOD for (-)-epicatechin and procyanidin B2 was 0.2 and 2 ng/zone, respectively; LOQ was 0.4 ng and 4 ng/zone, respectively. These limits were lower by a factor 50 for (-)-epicatechin and by a factor of 10 for procyanidin B2 than those obtained by HPLC. The TLC method gave a more accurate result for the (-)-epicatechin content of baking chocolate than the HPLC method which was also more time-consuming.

J. Braz. Chem. Soc. 21, 441-446 (2010). HPTLC of ochratoxin A in wine on silica gel with toluene - ethyl acetate - chloroform - formic acid 6:3:1. Quantitative determination by absorbance measurement at 366 nm, using a CCD camera followed by images processing using the software ImageJ. Linearity was between 0.8 and 32 µg/L. The intra-day and inter-day precisions had a RSD lower than 9.9 % and 11.5 %, respectively. LOD was 16 ng/zone while LOQ was 100 ng/zone. The proposed method is a simple, efficient and low cost tool for quantitative analysis of ochratoxin A in wine samples.