Planta Med. 58, 259-262 (1992). TLC of aloins and 10-hydroxyaloins on silica with the lower layer of chloroform – methanol – water 7:13:8. Detection by spraying with 5% KOH. This reagent allows to distinguish aloins (dark yellow fluorescence) from 10-hydroxyaloins (light yellow fluorescence). Excellent resolution of 10-hydroxyaloin A and 10-hydroxyaloin B. Also DCCC separations.

J. Chromatogr. 670, 191-198 (1994). Studies of the retention behavior of 15 closely related coumarins in normal-phase OPLC with the aim of comparing the retention with those in normal-phase TLC and HPLC with the mobile phase optimized according to the PRISMA system. Examination of two and three dimensional evaluations of k' against selectivity points, the a values for TLC, OPLC and HPLC. Discussion of the retention behavior of different solvent systems in different techniques.

Phytochemistry 45, 1049-1056 (1997). TLC of various benzopyran derivatives with hexane - dichloromethane 1:1 and 4:1 and with hexane - acetone 9:1, Detection under UV and with vanillin-sulfuric acid reagent. Also prep. TLC on silica with hexane - ethyl acetate in different ratios.

Planta med. 65, 695-699 (1999). TLC of maackiain, umbelliferone, cichoric acid and echinacoside on silica gel with ethyl acetate - acetic acid - formic acid - water 100:11:11:27 and formic acid - ethyl acetate - toluene 3:10:10. Detection after spraying with 1% 2-aminoethyldiphenyl borate in methanol and 5% polyethylene glycol 4000 in methanol under UV.

Planta med. 66, 163-168 (2000). Analytical and preparative TLC of D8-lanostane-type triterpene lactones (3a-hydroxy-7-oxolanosta-8,24-dien-26,23R-olide and 3a -hydroxy-7,11-dioxolanosta-8,24-dien-26,23R-olide) on silica gel with chloroform - methanol 50:1; 19:1. Detection under UV 254 and 366 nm.

J. Planar Chromatogr. 19, 118-123 (2006). The computer-assisted simulation program DryLab has been used to simulate TLC separations. The simulations were based on data from preliminary TLC separations. For DryLab data entry of Rf values from TLC were converted to retention times, the development distance on the plate was used as column length, and the thickness of the adsorbent was used as the column diameter. To achieve reasonably accurated simulations it was found necessary to run three preliminary runs in which differences between organic modifier concentration in two adjacent runs were more than 5 %. The possibility of predicting HPLC separation conditions on the basis of TLC separations was also studied. - TLC of gallic acid, rutin, (+)-catechin, naringenin, and quercitin on RP18 with mixtures of acetonitrile and 0.1 % aqueous formic acid. Scanning at 255 nm in reflectance mode.

J. Chromatogr. A 1468, 228-235 (2016). Development and validation of a rapid and simple screening method by HPTLC for antioxidant activity in samples of 16 algal species collected from local Victorian beaches. Quantification of fucoxanthin, one of the most abundant marine carotenoids directly from the HPTLC plates before derivatization either with 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical or ferric trichloride to analyze antioxidants in marine algae, based on their ability to chelate iron ions or to scavenge non-biological stable free radical, respectively. Classification of algae species into 5 groups according to the chemical/antioxidant profiles by principal component analysis of obtained HPTLC fingerprints. The investigated brown algae samples were rich in non-polar and moderate-polar and phenolic compounds with antioxidant activity, while most of the phenolic iron chelators showed free radical scavenging activity. Strong positive and significant correlations between total phenolic content and DPPH radical scavenging activity showed that phenolic compounds, including flavonoids are the main contributors of antioxidant activity in these species, which could be considered for future applications in medicine, dietary supplements, cosmetics or food industries. Discussion of the advantages of the proposed methods in terms of screening for antioxidants and quantification of antioxidant constituents in complex mixtures using the flexible and versatile standard HPTLC system in the drug discovery, and the possibility of using the method for the bioassay-guided isolation of unknown natural antioxidants and subsequent identification if combined with spectroscopic identification.

(Analysis and standardization of medicinal drugs and phytopreparations by HPLC and other chromatographic methods.) Dtsch. Apotheker-Zgt. 123, 515-521 (1983). TLC of flavonoids on silica with ethyl acetate - MEK - formic acid- acetic acid - water 50:30:7:3:10. Detection by UV 365 nm and modified natural product reagent ("Naturstoffreagenz").