J. Food Comp. Anal. 45, 26-33 (2016). HPTLC of monoacylglycerol and free fatty acids in carrot seed oil on silica gel with hexane – diethyl ether – acetic acid 50:50:1. The zones were marked and scraped off the plate for positional distribution analysis by gas chromatography.

J. Chromatogr. A 1432, 140-144 (2016). 2-Aminoacetophenone (AAP) is closely correlated with the appearance of the sensory phenomenon of untypical aging off-flavor (UTA) in wine and is generally analyzed by GC/MS after being extracted from wines by liquid-liquid, solid-liquid or solid phase microextraction. Presentation of a rapid, selective and sensitive method for the determination of AAP in wine by HPTLC of the extracts, obtained by liquid-liquid extraction with t-butyl methyl ether followed by a basic cleanup, on amino layer with methylene chloride – toluene 7:3. Detection by dipping into n-hexane-paraffin solution and quantification by densitometry at 366/>400 nm using 2-amino-4-methoxyacetophenone as internal standard. The LOD and LOQ were 0.1 and 0.3 μg/L, respectively. The recovery was near 100 % for model, white and red wines, while AAP concentrations were >0.5 μg/L in UTA. The results indicated that the method enables the analysis of AAP in wines clearly below the odor thresholds and represents a rapid and convenient screening alternative to existing GC/MS methods.

J. Planar Chromatogr. 29, 195-202 (2016). HPTLC of naftopidil on silica gel with toluene – ethyl acetate – methanol – triethylamine 80:20:5:3. Quantitative determination by absorbance measurement at 254 nm. The hRF value was 52. Linearity was in the range of 500-2500 ng/zone. Intermediate precisions were below 1.5 %. The LOD and LOQ were 95 and 268 ng/zone. Average recovery was 100.0%.

Phytochemistry. 130, 22-46 (2016). The review describes 141 steroidal saponins and sapogenins from the genus Agave reported in the literature from 1970 to 2015. It is a comprehensive review of structures, methods of chemical profiling, including the application of TLC and 2D-TLC for the analysis of saponins and sapogenins, and HPTLC for the determination of hecogenin.

J. Planar Chromatogr. 29, 341-346 (2016). HPTLC of artemisinin in the seeds of Artemisia annua on silica gel with n-hexane ‒ ethyl acetate ‒ acetic acid 20:10:1. Detection by dipping into anisaldehyde reagent (glacial acetic acid ‒ sulfuric acid ‒ anisaldehyde 50:1:0.5) followed by heating at 110 °C for 5 min. Quantitative determination by absorbance measurement at 540 nm. The hRF value for artemisinin was 43. Linearity was between 200 and 1000 ng/zone. The intermediate precision was below 0.7 % (n=3). The LOD and LOQ were 30 and 80 ng/zone, respectively. Recovery ranged from 82.9 to 87.1 %.

J. Ethnopharmacol. 195, 10-19 (2017). HPTLC of mesembrine alkaloids (mesembrine, mesembrenone, mesembrinol, mesembrenol, epimesembranol, epimesembrenol) in the South African medicinal plant Sceletium tortuosum on silica gel with dichloromethane – methanol – 10 % ammonia 900:100:1. Quantitative determination by absorbance measurement at 280 nm. The LOD and LOQ were in the range of 18-31 ng/zone and 44-95 ng/zone, respectively.

J. Planar Chromatogr. 29, 474-476 (2016). HPTLC of methamphetamine in Ya-Ba tablets on silica gel with methanol ‒ ammonium 200:3. Quantitative determination by absorbance measurement at 259 nm. The hRF value was 35. Linearity was between 600 and 3000 μg/zone. The intermediate precision was 11.2 % (n=3). The LOD and LOQ were 153 and 463 μg/zone, respectively. Average recovery was 102.3 %.

J. Planar Chromatogr. 30, 219-224 (2017). HPTLC of 18 derivatives obtained by substitution of chlorine atom at C7 or/and C6 in 6,7-dichloro-5,8-quinolinedione on RP-18 with a mixture of acetone and _x000D_water solution of buffer Tris (pH 7.4) in different volume compositions ranged from 30 % to 85 % in 5 % increments. The correlation between experimental and calculated values of lipophilicity was analyzed.