J. Liq. Chromatogr. Relat. Technol. 38, 1142-1146 (2015). HPTLC-DPPH of instant grits with Chamomilla anthodium as additive prepared by extrusion method on silica gel with acetonitrile - water - choroform - formic acid 12:3:2:1. Detection by dipping into 0.2 % chloroformic DPPH solution for 5 s followed by keeping in the dark for 30 min.

TrAC 66, 146-157 (2015). Review of common analytical techniques and methods for the analysis of adulterants of essential oils. HPTLC methods for the analysis of numerous samples, such as Clary sage, Mint, Neroli, Niaouli and Thyme essential oils are referenced.

J. Liq. Chromatogr. Relat. Technol. 38, 1639-1659 (2015). Systematic review of different chromatographic methods for the analysis of proton pump inhibitors. The review describes the application of HPTLC for the analysis of omeprazole in biological fluids such as plasma, on silica gel with n-butanol - ammonia - water 14:1:15 (1) or chloroform - methanol 15:1 (2) and quantitative determination at 280 nm for (1) or 286 nm for (2).

J. Ethnopharmacol. 175, 131-137 (2015). HPTLC of 11-hydroxymustakone (1), N-formylannonain (2) and yangambin (3) in Tinospora cordifolia on silica gel with chloroform - ethyl acetate - methanol 130:80:3. Detection by dipping into anisaldehyde sulfuric acid reagent, followed by heating at 100 °C for 5 min. Quantitative determination by absorbance measurement at 366 nm. LOD and LOQ were 75 and 225 ng/zone for (1), 150 and 450 ng/zone for (2) and 30 and 90 ng/zone for (3), respectively. The intermediate precision was below 3 % (n=3). Recovery for (1) to (3) was in the range of 99-108 %.

Food Res. Int. 76, 3-10 (2015). HPTLC of saponins in peas (Pisum sativum) on silica gel with chloroform - methanol - water 55:37:8. Detection by dipping into p-anisaldehyde sulfuric acid reagent for 2 s, drying for 10 min, followed by heating at 70 °C for 5 min. Quantitative determination by absorbance measurement at 545 nm. The hRF of soyasaponin βg was 60 as a violet-blue band and for soyasaponin I 57 as an orange band on a dark background. Saponin identification by hyphenation of HPTLC with mass spectrometry (MS) via a TLC–MS interface.

J. Planar Chromatogr. 28, 395-397 (2015). HPTLC of 25-B-NBOMe (a N-(2-methoxy)benzyl-substituted phenylethylamine hallucinogen) in seized blotters (small, square pieces of absorbant paper impregnated with LSD or other hallucinogens) on silica gel with cyclohexane – toluene – diethylamine 15:3:2. Quantitative determination by absorbance measurement at 298 nm. The hRF value for 25-B-NBOMe was 34. Linearity was in the range of 19-115 μg/zone. LOD and LOQ were 7 and 22 μg/zone. The intermediate precision was below 6.3 % (n=6). Average recovery was 98 %.

J. Planar Chromatogr. 29, 38-44 (2016). HPTLC of tropane alkaloids (atropine sulfate, homoatropine, L-hyoscyamine, scopolamine hydrobromide, tropine and scopolamine oxide) in Datura innoxia Mill. on silica gel with methanol – buffer pH=9 1:1. The electric field gradient for the electrochromatography was 1.2 kV/cm. Detection by spraying with Dragendorff reagent. The electrostatic field was referred to be an important factor in broadening the applicability of conventional TLC systems.

J. Planar Chromatogr. 29, 310-317 (2016). HPTLC fingerprinting of two types of German propolis on silica gel with n-hexane – ethyl acetate – glacial acetic acid 5:3:1 under acidic preconditioning. Detection and documentation under UV 366 nm. Image analysis by converting chromatogram images to numerical data sets to form a data matrix. The best preprocessing was obtained by a combination of the median filter, correlation optimized warping, standard normal variate, and mean centering/autoscaling procedure.