CBS 92, 13-15 (2004). HPTLC on silica gel with toluene - ethyl acetate - methanol - ammonia 25 % 10:10:50:3 over 70 mm with chamber saturation for 30 min. Detection by dipping in iodine solution (0.05 g in 10 mL ethanol 96 %). Visual evaluation under white light. Quantitative determination by absorbance measurement at 210 nm. Repeatability measuring 6 replicates of the same sample on one plate is between 1.6 % and 3.7 %, repeatability of the means from 3 different plates is 1.2 %.

CBS 85, 14-15 (2000). HPTLC on silica gel with ethyl acetate - formic acid - water 45:5:3. Detection by spraying with dichloroquinonechlorimide followed by spraying with 10 % aqueous sodium carbonate solution. Visual evaluation.

J. Planar Chromatogr. 17, 300-304 (2004). TLC of essential oils and thymol, carvacrol, geraniol as standards and streptomycin and gentamycin as positive controls on silica gel with toluene - ethyl acetate 93:7. Detection with ethanolic vanillin sulfuric acid. Quantitative determination at 500 nm. For bioautography the developed plates were dipped for 10 s in approximately 50 mL culture medium containing the test organism followed by drying for 2 min. After storage of the plates at 26 - 28 °C for 17 h they were dipped for 10 s in an aqueous solution (0.1 g / 60 mL) of 3-{4,5-dimethylthiazol-2-yl}-2,5-diphenyltetrazolium bromide (MTT) the layers were incubated at 28 °C for 2 h and then dipped in 70 % ethanol and dried at room temperature.

J. AOAC Int. 88, 1568-1570 (2005). HPTLC of alliin on silica gel with n-butanol - acetic acid - water 3:1:1 at 25 +/- 2 °C and 40 % relative humidity. Detection by dipping in ninhydrin reagent (0.3 g ninhydrin in 100 mL n-butanol and 3 mL acetic acid) for 2 s, followed by heating at 110 °C for 5 min. Quantitative determination by densitometric evaluation of peak areas at 540 nm. Linearity within the range of 250-1500 ng/spot, correlation coefficient of 0.998 and RSD of 2.87 %; mean recovery 98.4 %.

Planta Med. 72, 351-357 (2006). Analytical and preparative TLC of ergosta-4,6,8(14),22-tetraen-3-one, beta-sitosterone, 2,6,11-trimethyldodeca-2,6-10triene, and stigma-4-ene-3,6-dione on silica gel with n-hexane - ethyl acetate 6:1. Preparative TLC of tsangin A with dichloromethane - acetone 25:1; of tsangin B and beilschmien C with dichloromethane - acetone 20:1; of beilschmien A and B with n-hexane - ethylacetate 2:1. Detection under UV light at 254 nm.

Hungarica 52, 217-221 (1982). (Hungarian). (Pharmacokinetics and metabolism of compound marked as GYKI-11679.) TLC of GYKI-11679 = 1, 6-morpholine-3-pyridazinyl-2-(t-butoxy-carbonyl)-isopropylidene-hydrazine and metabolites on silica with benzene - methanol 2:1. Detection by UV 254 and 366 nm.

Planta Med. 70, 585-588 (2004). Preparative TLC of rotenon and 6a-alpha,12a-alpha-12a-hydroxyelliptone on silica gel with dichloromethane, benzene - methanol 24:1 and hexane - ethyl acetate 4:1. Detection under UV light at 254 nm.

J. High Resol. Chromatogr. 6, 49-50 (1983). Two-dimensional TLC of deprenyl(N-methyl-N-propargyl-(2-phenyl-1-methyl) ethyl ammonium hydrochloride) and metabolites (amphetamine, methamphetamine, propargylanara, deprenyl) on silica with 1)chloroform - methanol - borate buffer pH 6.5 2:2:1, after drying a dye mixture is spotted at the start line and second chloroform with 5 % triethanolamine. Detection by UV 254 nm. Autoradiography.