J. Planar Chromatogr. 12, 26-29 (1999). TLC of rutin on silica gel with ethyl acetate - formic acid - water 8:1:1, chamber saturation. Quantitation after drying by densitometry at 260 nm in reflectance mode, also at 440 nm after spraying with a 1% methanolic solution of 2-aminoethyldiphenylborinate.

Chromatographia 51, 473-477 (2000). Determination of retention-mobile phase composition relationships for 18 flavonoids chromatographed with non-aqueous systems of the type silica-diluent + polar modifier (S). Discussion of the slopes of the plots depending on the molecular structures of the solutes, primarily on the number of hydroxyl groups, and the selectivities and sequences depending on the diluent and modifier applied, with plots of Rm against [S] approximately linear.

J. Liq. Chrom. & Rel. Technol. 24, 1171-1179 (2001). TLC of genkwanin, tectochrysin, galangin, apigenin, pilloin, chrysin, kaempferol, pinocembrin, 5-hydroxy-4',7-dimethoxyflavone, and pinostrobin chalcone on silica gel with hexane - dichloromethane and dichloromethane - ethyl acetate in different proportions. Visualization under UV 254 and 366 nm and in day light after spraying with 1% methanolic iron(III) chloride solution or 1% methanolic aluminium chloride solution.

Proc. Intern. Symp. on Planar Separations Plan. Chrom. 305-307 (2003). TLC of flavonoids (7-O-glucoside luteolin, 7-O-glucoside apigenine, 5'-O-glucoside tricetin, 3-O-rhamnoside quercetin, 3-O-rhamnoside kaempferol, luteolin, quercetin, kaempferol, isoginkgetin, ginkgetin) on silica gel in a sandwich chamber, in a Personal OPLC chamber, and by planar electrochromatography method with 11 monocomponent, 8 binary phases in different concentration, and ternary and quaternary mobile phases. The best separation of flavonoids, biflavones, aglycones, glycosides was obtained with ethanol - ethyl acetate -dioxane - hexane (as solvent strength modifier).

leaves. J. Planar Chromatogr. 18, 244-248 (2005). Analytical and preparative TLC of coumarins from Peucedanum tauricum with bergapten, scopoletin, and coumarin A and B as standards on silica gel and on RP-2 with water - methanol 3:2 in horizontal chambers. Detection under UV light at 366 nm and densitometry at UV 366 and 320 nm. Re-chromatography with more selective mixtures of dichloromethane and acetonitrile 99:1 and 39:1. Identification by analytical co-chromatography with standards using mixtures of cyclohexane - ethyl acetate 3:1 and dichloromethane - acetonitrile 39:1.

J. Planar Chromatogr. 20, 53-56 (2007). HPTLC of flavonoids (quercetin glucuronide, hyperoside, isoquercitrin, quercetin galloyl galactoside, quercitrin) on silica gel with ethyl acetate - formic acid - water 136:5:6 in a horizontal chamber. Densitometric quantitfication of flavonoids at 350 nm.

International Journal of PharmTech Research 2(2), 1427-1430 (2010). Ashokarista formulations contain ashoka (Saraca indica) as the main ingredient. Its markers are catechin, (+)catechole, and (-)epicatechin. TLC of extracts and (+)catechin on silica gel with toluene - ethyl acetate - formic acid - methanol 15:15:4:0.1. Quantitative determination by densitometry in absorbance mode at 278 nm. For identification of the stem-bark of Saraca indica the fingerprint is evaluated after detection with anisaldehyde-sulphuric acid. The hRf value of (+)catechin was 54.

Plant Breeding 134, 129-134 (2015). HPTLC screening of flavonoids in more than 1800 taro hybrids (Colocasia esculenta (L.) Schott) on silica gel with ethyl acetate - methanol - acetic acid - formic acid - water 30:1:2:1:3. Detection by heating at 100 °C for 3 min, followed by dipping with natural product reagent. Qualitative determination by absorbance at 366 nm. Scoring of the absence and presence of a selection of 8 zones for each track followed by statistical retreatment permitted to sort samples per family. This method contributed to taro genetic improvement.