J. Chromatogr. 312, 357-385 (1984). Two-dimensional TLC of dansylated basic nitrogen fractions (BNF) on silica with cyclohexane - ethyl acetate 2:3 and with benzene - triethylamine 5:1. Detection by UV 366 nm. Dansylation of the plant amines was carried out prior to TLC with DNS chloride in acetone (5 mg/ml) in the presence of excess solid NaHCO3. Standards for comparison were separated with chloroform - butylacetate 8:3 and with cyclohexane - benzene - methanol 2:7:1. Rf values of more than 80 plant amines are reported.

Phytochemistry 25, 2910-2912 (1986). Separation of indole alkaloids and heteroyohimbine alkaloids on silica with chloroform - methanol 9:1, ethyl acetate - isopropanol - NH3 16:3:1 or chloroform - acetone 5:4. Detection with Dragendorff's reagent for alkaloids, 0.2 M FeCl3 in 35 % perchloric acid for heteroyohimbine alkaloids, 0.5 % anisaldehyde in formic acid - sulfuric acid - methanol 2:1:17 for terpenes and procyanidins and with 1 % vanillin in 50 % aq. phosphoric acid for alkaloids and terpenes. Preparative Separation by centrifugal TLC on silica with chloroform - methanol 9:1 and 4:1.

Planta Med. 57, 560-565 (1991). TLC of fourteen bufadienolides from a bulb extract of Urginea maritima on silica with chloroform - methanol - water 140:44:7 and ethyl acetate - methanol - water 81:11:8. Also HPTLC on RP-2 with methanol - water 1:1. Detection by spraying with anisaldehyde/sulfuric acid. Excellent separation of cardiotonic glycosides on RP-2 HPTLC plates. Also CC and HPLC.

CBS 90, 6-7 (2003). HPTLC phospholipids and glycolipids from rape seed on lichrospher silica gel with chloroform - methanol - acetone - water 18:15:2:1 for phospholipid separation and with acetone - chloroform - water 30:15:2 for glycolipid separation, developing distance 70 mm each. Detection by dipping in molybdatophosphoric acid reagent (5 % in ethanol) followed by heating at 120 °C for 15 min. Quantitative determination by absorbance measurement at 720 nm.

68, 790-793 (2002). Preparative and analytical TLC of melisemine, confusadine, melicarpinone, edulinine, (S)-(-)-7,8-dimethoxyplatydesmine, isoplatydesmine, skimmianine, confusaneline, kokusaginine, and haplopine on silica gel with chloroform - acetone 5:1 and 10:1, chloroform - methanol 25 :1 and 3:1, benzene - ethyl acetate 1:1, benzene - methanol 10:1, and ethyl acetate - methanol 10:1.

Planta med. 70, 152-159 (2004). Analytical HPTLC on silica gel RP-18 and preparative TLC on silica gel of piperine, piperamine, piperlonguminine, and methyl piperate with n-hexane - ethyl acetate 1:1. Detection by spraying with 1 % cerium sulfate - 10 % aqueous sulfuric acid followed by heating on a plate heater.

J. Liq. Chrom. Rel. Technol. 27, 2087-2100 (2004). HPTLC of tetrandrine on silica gel with toluene - ethyl acetate - methanol - 28 % ammonia 100:100:50:3. Detection under UV light at 366 nm, and under white light after reaction with iodine (yellowish zones). If the plate is subsequently derivatized with anisaldehyde solution, the alkaloids show a strong blue fluorescence under UV light at 366 nm. Quantitative determination at 210 nm. The calibration curve is linear for 50 - 112.5 ng tetrandine per zone. Also HPTLC of aristolochic acids (AAs) on silica gel with the upper phase of toluene - ethyl acetate - water - formic acid 20:10:1:1 and derivatization with tin(II) chloride (to be prepared freshly: dissolve 1 g tin(II) chloride•2H2O in 1.5 mL 36 % hydrochloric acid diluted with 8 mL water), followed by heating at 100 °C for 1 min and evaluation under UV light at 366 nm. The method allows detection of 1 ppm of AA.

J. Planar Chromatogr. 17, 459-463 (2004). TLC of standard solutions of nine flavonoids and six phenolic acids (cinnamic, o-coumaric, m-coumaric, p-coumaric, caffeic, ferulic acid, galangin, quercetin, pinocembrin, naringenin, apigenin, chrysin, kaempferol, morin, acacetin) on silica gel in pre-saturated developing chambers with 1) n-hexane - ethyl acetate - glacial acetic acid 31:14:5, or 2) chloroform - methanol - formic acid 88:7:5. After drying, bands were visualized under short- and long-wavelenghth UV light. Detection by spraying with 1 % aluminium trichloride solution and evaluation under long-wavelength UV light. Standards were chromatographed again with a propolis extract. First, plates were developed with mobile phase 1 (or 2), the eluent was evaporated, standard solutions were applied again, and the plate was rotated through 90 ° and chromatographed again with mobile phase 2 (or 1). The presence (or absence) of all standards was determined according to their Rf values and fluorescence colors. Quantitative determination by absorbance measurement at 254 and 366 nm.