Biochemical Systematics and Ecology 27, 651-656 (1999). TLC of flavonoids on silica gel with ethyl acetate - formic acid - acetic acid - water 100:11:11:27. Detection by spraying with diphenylboryloxyethylamine (2% in methanol) followed by spraying with polyethylene glycol (5% in ethanol).

Planta med. 65, 213-217 (1999). TLC of (e.g. gallocatechin-(4'-O-7)-epigallocatechin, 3,5-dicaffeoylquinic acid, myricetin, quercetin 3-O-glucoside) on silica gel with ethyl acetate - acetic acid - formic acid - water 75: 2:3:20 and n-butanol - acetic acid - water 4:1:5; upper layer. Detection under UV 254 nm, by spraying with 1% vanillin and 5% sulfuric acid in methanol and by spraying with Neu's reagent.

J. Liqu. Chromatogr. 25, 889-897 (2002). TLC of flavonoids on silica gel with ethyl acetate - methanol 47: 3; 23:2; 4:1, ethyl acetate - benzene 5:1; 4:1, chloroform - methanol 47: 3; 3:1; 7:3. Visualization under UV 254 and 366 nm, followed by spraying with 1% ethanolic aluminium chloride solution.

paucifolia. Planta med. 68, 519-522 (2002). Preparative TLC of 5'-(1',1'-dimethylallyl)-8-(3',3'-dimethylallyl)-2',4',5,7-tetrahydroxyflavone and 2(S)-5'-(1',1'-dimethylallyl)-8-(3',3'-dimethylallyl)-2'-methoxy-4',5,7-trihydroxyflavone on silica gel with dichloromethane - methanol 49:1 and n-hexane - ethyl acetate 1:1.

(Malvaceae). J. Planar Chromatogr. 18, 264-268 (2005). TLC in horizontal chambers of phenolic acids (caffeic, p-coumaric, ferulic, protocatechuic, gentisic, chlorogenic, isovanillic, gallic, syringic, vanillic and p-hydroxybenzoic acid) from Lavatera trimestris flowers on cellulose with water - acetic acid 3:17, toluene - ethyl formate - formic acid 5:4:1, chloroforrm - acetic acid - water 4:1:1 and of flavonoids (rutoside, kaempferol 3-rhamnoglucoside, hyperoside, isoquercetin, luteolin 7-glucoside, quercitrin, isorhamnetin 3-glucoside, luteolin, apigenin, quercetin, kaempferol) on silica gel with n-propanol - ethyl acetate - water 7:2:1, ethanol - 25 % ammonia - water 20:1:4, ethyl acetate - formic acid - water 10:2:3, ethyl acetate - formic acid - glacial acetic acid - water 100:11:11:27 and 50:5:5:9. Also two-dimensional TLC of phenolic acids on cellulose (after conditioning in the chamber for 5 min with benzene - methanol - acetic acid 94:1:5) with benzene - methanol - acetic acid - acetonitrile 16:2:1:1 in the first direction and with sodium formate - formic acid - water 1:0.1:20 in the second direction. Detection under UV light at 254 and 366 nm before and after treatment with ammonia vapor. Also derivatization by spraying with a 2 % aqueous solution of iron(III) chloride, diazotized sulfanilic acid in 20 % sodium carbonate solution, and diazotized p-nitroaniline for phenolics and with a 1 % methanolic solution of natural products reagent A for flavonoids.

Pharmazie 62, 803-812 (2007). TLC of anthocyanins in aronia, blueberry and lingonberry extracts and the respective preparations (e.g. capsules, lozenges, granulate) on silica gel with ethyl acetate - water - anhydrous formic acid 10:3:2 and 10:4:1. Detection in white light prior and after spraying with iron(III)chloride solution or with vanillin phosphoric acid reagent.

Food Chem. 146, 104-112 (2014). HPTLC-Vis-ESI-MS of major anthocyanins in powder berry extracts of bilberry, blueberry, chokeberry, açai berry and cranberry on silica gel with ethyl acetate - 2-butanone - water - formic acid 35:15:4:6 in the first run (for anthocyanins) and ethyl acetate - toluene - formic acid - water 50:15:6:4 in the second run merely for the cut upper plate part (for anthocyanidins). Quantitation by absorbance measurement using a 4-point calibration at 520, 530 and 555 nm (multiwavelength scan). Correlation coefficients were between 0.9988 and 0.9999. Repeatability of sample analysis (n=3) was below 3.6 %. For confirmation of the results or characterisation of unknown anthocyane zones, mass spectra were recorded. Chromatography was directly linked to the effect using DPPH* reagent and the luminescent Aliivibrio fischeri bioassay.The method demonstrated to be a rapid, visually appealing alternative to known HPLC methods.

J. Planar Chromatogr. 28, 42-47 (2015). HPTLC of (1) homoeriodictyol and (2) persicogenin in the methanol extract of the aerial parts of Rhus retinorrhoea and Rhus tripartita on silica gel with toluene - ethyl acetate - methanol 16:4:1. Quantitative determination by absorbance measurement at 293 nm. The hRF values of (1) and (2) were 30 and 48. Linearity was between 100 and 800 ng/zone for both, (1) and (2). The intermediate intra-day and inter-day precisions were below 2 % (n=6). The LOD and LOQ were 26 and 77 ng/zone for (1) and 31 and 92 ng/zone for (2), respectively. Recoveries were in the range of 98.9-99.5 % for (1) and 98.3-99.2 % for (2).