J. Planar Chromatogr. 29, 184-189 (2016). HPTLC of (±)-etodolac mixed with L-Trp 1:1 as chiral inducing reagent on silica gel with acetonitrile – dichloromethane – methanol 3:1:2. Detection by using iodine vapor. The hRF values for (-)- and (+)-etodolac were 33 and 62, respectively.

Planta Medica 82(17), 1482-1486 (2016). TLC of the methanolic percolate of Elettaria cardamomum seeds on silica gel (with F254) with chloroform – ethyl acetate – methanol – formic acid 6:4:2:1, allowing the identification of kaempferol, rutin and quercetin by comparison to standards.

J. Chromatogr. Sci. 54 (1), 58-63 (2016). Description of a method for simultaneous determination of the two monoterpenes menthol and eucalyptol, contained in several analgesic pharmaceutical formulations for external use, by HPTLC on silica gel with hexane – ethyl acetate 4:1. The hRF value of menthol was 34 ± 4 and of eucalyptol 56 ± 4. Linearity was between 100–800 ng/zone (r2 = 0.9979) for menthol and 52–1107 ng/zone (r2 = 0.9937) for eucalyptol.

J. Planar Chromatogr. 30, 216-218 (2017). HPTLC of monocrotophos on silica gel with n-hexane – acetone 4:1. Detection by spraying with freshly prepared sodium nitroprusside reagent (1 % sodium nitroprusside in 2 N sodium hydroxide). The hRF value for monocrotophos was 80.

J. Liq. Chromatogr. Relat. Technol. 40, 252-258 (2017). HPTLC of allocryptopine, berberine, boldine, chelidonine, papaverine, and emetine on cyano phase in different eluent systems. 2D-TLC of the same alkaloid standards on cyano phase in the first dimension with either A) methanol – diisopropyl ether – ammonia 15:83:2 or B) methanol containing 2 % acetic acid, and in the second dimension with either C) acetonitrile – water – formic acid – 1-butyl-3-methylimidazolium tetrafluoroborate 40:58.8:1:0.3 or D) acetonitrile – acetate buffer pH 3.5 – 1-butyl-3-methylimidazolium tetrafluoroborate 40:20:0.25. The best separation of the alkaloids was obtained with mobile phase C).

J. China Pharm. 25 (2), 72-74 (2016). Baibai Keli granule is a herbal TCM for treatment of menorrhagia caused by Qi deficiency and blood-heat. For quality control, TLC of its extracts on silica gel (1) for Codonopsis pilosula (Franch.) Nannf., with n-butanol – formic acid 1:1, detection by spraying with 10 % sulfuric acid in ethanol and heating at 105 °C until the zones are visualized in daylight; (2) for Poria Cocos (Schw.) Wolf dry sclerotium, with petroleum ether (30-60 °C) – acetone 4:1, detection under UV 366 nm; (3) for Atractylodes macrocephala, with petroleum ether (60-90 ºC) – ethyl acetate 20:1, detection by spraying with 5 % vanillin in sulfuric acid – ethanol 4:1 and heating at 105 °C until the zones are visualized in daylight; (4) for Astragalus membranaceus (Fisch.) Bunge., with the lower phase of chloroform – ethyl acetate – methanol – water 3:3:2:1 under 10 ºC overnight, detection by spraying with 10 % sulfuric acid in ethanol and heating at 105 ºC until the zones are visualized, evaluation (A) in daylight and (B) at UV 366 nm. Quantification of glycyrrhizic acid by HPLC.

J. Chromatogr. A 1529, 93-106 (2017). Presentation of the quantitative effect-directed profiles of 77 industrially and freshly extracted botanicals like herbs, spices, vegetables and fruits, widely used as food ingredients, dietary supplements or traditional medicine for their quality assessment with regard to potential health-promoting activities. Fast assignment of single active compounds and evaluation of their contribution to the overall activity, originating from a food or botanical sample by combination of HPTLC hyphenated with UV/Vis/FLD detection and effect-directed analysis, using the 2,2-diphenyl-1-picrylhydrazyl radical, Gram-negative Aliivibrio fischeri, Gram-positive Bacillus subtilis, acetylcholinesterase and tyrosinase assays. Characterization of bioactive compounds of interest eluted using an elution head-based interface by HPTLC-UV/Vis/FLD-EDA-ESI-(HR)MS method. Demonstration of the excellent quantification power of the method by applying for rosmarinic acid, contents ranged from 4.5 mg/g (rooibos) to 32.6 mg/g (rosemary), for kaempferol-3-glucoside from 0.6 mg/g (caraway) to 4.4 mg/g (wine leaves), and for quercetin-3-glucoside from 1.1 mg/g (hawthorn leaves) to 17.7 mg/g (thyme). The mean repeatabilities (%RSD, n=18) were ≤ 2.2 % for the three compounds and the mean intermediate precision (%RSD, n=3) was 5.2 % over three different days.

J. Planar Chromatogr. 30, 423-426 (2017). 2D-HPTLC of phytoestrogenic active compounds in the root of Glycyrrhiza glabra on RP-18 with hexane – ethyl acetate – acetone 9:3:2 in the first direction and acetone – water 3:2 in the second direction. Effect-direct analysis by dipping into a yeast suspension followed by incubation at 30 °C for 4 h, drying at 37 °C for 15 min and spraying with the combined reaction buffer C (20 mL reaction buffer C is mixed with 0.2 mL of a freshly prepared solution of 0.05 g/mL 4-methylumbelliferyl-ß-D-galactopyranoside in DMSO or 0.2 mL of a freshly prepared solution of 0.05 g/mL 5-bromo-4-chloro-3-indoxyl-ß-D-galactopyranoside (X-Gal) in DMSO). Fluorescence detection at UV 366 nm._x000D_