J. Planar Chromatogr. 28, 413-425 (2015). Review of the use of thin-layer chromatography for the analysis of ionizable substances. Regarding acidic and basic compounds, the review describes the use of polar adsorbents and polar bonded stationary phases as well as reversed-phase separations._x000D_

J. Liq. Chromatogr. Relat. Technol. 38, 1767-1782 (2015). HPTLC of thiocolchicoside on silica gel with toluene - acetone - water 3:15:2. Quantitative determination by absorbance measurement at 277 nm. The hRf value of thiocolchicoside was 53. Linearity was in the range of 100-500 ng/zone. LOD and LOQ were 3 and 11 ng/zone, respectively. The intermediate/inter-day/intra-day precision (n=7) was below 1 %. Recovery (by standard addition) was in the range of 100-101 %.

(Rutaceae). Rapid Commun. Mass Spectrom. 29, 1530-1534 (2015). HPTLC of complex phytoconstituents in the peels of Citrus aurantium on silica gel with ethyl acetate - acetic acid - formic acid - water 100:5:5:13. Detection by spraying with vanillin reagent. Images were acquired by desorption electrospray ionization mass spectrometry in the positive ionization mode. The method allowed the identification of 20 compounds.

J. Liq. Chromatogr. Relat. Technol. 39, 549-557 (2016). Review of the use of TLC and HPTLC for the analysis of inks in forensic applications, including sample preparation, layers, sample application, detection, documentation and results interpretation. The author also described the application of TLC in food dye analysis as well as future trends in the field.

J. Ethnopharmacol. 182, 101-109 (2016). HPTLC of quercetin (1) and chlorogenic acid (2) in the leaves of Moringa oleifera on silica gel with toluene – ethyl acetate – formic acid 5:4:1 for (1) and ethyl acetate – dichloromethane – formic acid – acetic acid – water 100:25:10:10:11 for (2). Quantitative determination by absorbance measurement at 375 nm for (1) and 330 nm for (2). The hRF values of (1) and (2) were 63 and 30, respectively.

J. Planar Chromatogr. 29, 209-215 (2016). HPTLC of berberine in Tinospora cordifolia on silica gel with methanol – acetic acid – water 8:1:1. Quantitative determination by absorbance measurement at 366 nm. The hRF value of ranolazine was 71. Linearity was in the range of 120-360 ng/zone. Intermediate precisions were below 2 %. The LOD and LOQ were 40 and 120 ng/zone, respectively. The average recovery was 98.6 %.

J. Chromatogr. Sci. 52 (6) 559-565 (2014). TLC of sertindole subjected to stress stability studies, including acid, alkali, oxidative, photolytic and thermal degradation, on silica gel with methanol – ethyl acetate – 33 % ammonia 10:90:1, detection under UV 254 nm (the hRf was 71 for sertindole and 16 for its oxidative degradation product), identification by IR and GC/MS, quantification by densitometry at 227 nm with a linearity range of the calibration curve from 2 to 14 µg/band. The intermediate precisions and repeatabilities were < 2%. The method is suitable for quality control laboratories as stability-indicating method and for routine analysis without any preliminary separation step.

J. Planar Chromatogr. 29, 336-340 (2016). HPTLC of isoalantolactone (1), germacranolide (2), β-sitosterol (3), and lupeol (4) in the roots of Inula cappa on silica gel with toluene ‒ methanol 47:3. Detection by dipping into anisaldehyde reagent followed by heating at 105 ºC until colored bands appeared. Quantitative determination by absorbance measurement at 525 nm. Linearity ranged from 10-70 μg/mL for (1), 10-60 μg/mL for (2), 8-48 μg/mL for (3) and 15-90 μg/mL for (4). The intermediate precisions were below 0.9 % (n=7). The LODs and LOQs were 5 and 10 μg/mL for (1), (2) and (4) and 2 and 6 μg/mL for (3). Average recoveries were between 98.3 and 99.0 % for (1) to (4).