Indian drugs 48 (02), 43-47 (2011). TLC of curcumin and 3-acetyl-11-keto-beta-boswellic acid on silica gel with chloroform - methanol 37:3 for curcumin and n-hexane - ethyl acetate 1:1 for boswellic acid derivatives. The hRf value of 3-acetyl-11-keto-beta-boswellic acid was 24 and of curcumin 59. Densitometric evaluation at 430 nm for curcumin and 254 nm for the acid. The method was linear in the range of 100-500 ng/band for curcumin and 1500-4000 ng/band for 3-acetyl-11-keto-beta-boswellic acid.

Anal. Biochem. 164, 307-314 (1987). TLC on silica with chloroform - methanol - water 78:21:1.

Indigo precursors of Isatis species. (German). Biochemie und Physiologie der Pflanzen 184, 321-327 (1989). TLC of indican, indoxyl-5-ketogluconate on silica with chloroform - methanol 2:1 and/or methyl acetate - isopropanol - 25% NH3 45:35:2. Detection by spraying with 5% NaOH and/or 5% HCl.

Biochemical Systematics and Ecology 22, 43-51 (1994). TLC of the pigment on silica with methanol - water 2:1 with the addition of a few drops of ammonia solution. TLC provides a sensitive and cost effective comparative technique for identifying the pigment in a wide range of Lepidoptera.

Chromatographia 47, 529-536 (1995). 2D-TLC on silica gel with hexane - ethyl acetate 7:3 for the 1st direction and hexane - acetone for the 2nd. Identification by comparison of the retention values. Also HPLC and mass spectrometry.

J. Planar Chromatogr. 17, 309-313 (2004). TLC of extracted pigments from spinach (carotene, chlorophyll a, lutein, chlorophyll b, violaxanthin, neoxanthin) on silica gel with isooctane - acetone - diethyl ether 3:1:1 or on RP-18 with petroleum ether (35 - 60 °C) - acetonitrile - methanol 1:2:2 in a twin- trough chamber covered with aluminium foil, lined with a saturation pad, and equilibrated with the mobile phase for 15 min before insertion of the plate. Quantitative determination by densitometry at 429 nm. A TLC experiment with great value for students.

J. of Chromatogr. A 1257, 195-203 (2012). Based on the recent description of the fabrication of TLC plates from patterned carbon nanotube (CNT) forests via direct infiltration/coating of the CNTs by low pressure chemical vapor deposition of silicon from SiH4, followed by high temperature oxidation of the CNTs and Si, an improved microfabrication process for the preparation of these TLC plates has been presented. First, deposition of a few nanometers of carbon and/or a thin film of Al2O3 on the CNTs, confirmation of the presence of additional oxygen after carbon deposition by X-ray photoelectron spectroscopy, after priming, coating of the plates by rapid, conformal deposition of an inorganic material that does not require subsequent oxidation, i.e., by a fast pseudo atomic layer deposition (?-ALD) of SiO2 from trimethylaluminum and tris(tert-butoxy)silanol and faithful reproduction of the features in the masks is still observed after oxidation. Fast, highly efficient separations of the fluorescent dyes eosin Y disodium and sulforhodamine B were achieved on amino phase with LiCl - methanol 1:100 over 30 mm migration distance.

J. Planar Chromatogr. 4, 365-369 (1991). TLC and HPTLC separation of 8 thiazin dyes (thionine, azure A, azure B, azure C, methylene blue, new methylene blue, toluidine blue, methylene violet) on silica with 1-butanol - acetic acid - water in different ratios. Optimum solvent for all dyes except methylene violet 1-butanol - formic acid - water 10:1:1. Quantification by densitometry.