J. of China Pharm. 19 (23), 24-25 (2010). TLC of the extracts of traditional Chinese formulations and some health-care foods on silica gel with dichloromethane - acetone 4:1. Detection under UV 254 nm. This TLC method was better than the previously used one with the mobile phase dichloromethane - diethyl ether - methanol - water 385:60:15:2 and detection reagent 2 % tetrazolium solution - 2N NaOH - methanol 3:10:5. Identification of dexamethasone, prednisone, prednisolone acetate, prednisone acetate, cortisone acetate, hydrocortisone, betamethasone, hydrocortisone acetate, dexamethasone acetate, fluocinolone acetonide acetate by comparison with the standards. The improved procedure proved to be simple, fast, robust and suitable for quick screening of 10 glucocorticoids illegally added to some traditional Chinese formulations and health-care foods.

J. Liq. Chromatogr. Relat. Technol. 35, 1429-1443 (2012). HPTLC of azorubin (1) and sunset yellow (2) in powders for jelly desserts on silica gel with n-butyl alcohol - acetic acid - ethanol - water 10:2:1:5. Quantitative determination by absorbance measurement at 485 nm for (2) and 515 nm for (1). The hRf values of (1) and (2) were 45 and 53, and selectivity regarding matrix was given. Linearity was between 100-400 ng/zone for (1) and 200-450 ng/zone for (2). The %RSD values for repeatability studies were below 2. The limits of detection and quantification were 9 and 19 ng/zone, for (1) and 11 and 23 ng/zone for (2), respectively. Recovery was higher than 96.9 % for (1) and 95.7 % for (2).

J. Chromatogr. A 1223, 142-146 (2012). Hydrophilic vitamins play an important role in human health, and their lack or excess produces specific diseases. Development of a method for the analysis of these compounds for monitoring their content in pharmaceuticals and food. Application of TLC in the simultaneous analysis of hydrophilic vitamins with the optimized conditions towards different chemical characteristics of analytes. Due to the difficulty of separation of the structural analogues of these hydrophilic vitamins in one chromatographic run, taking the advantage of TLC to perform 2-D separations by using stationary phase gradient of silica gel and cellulose, achieving the highest resolution by combining two systems with different selectivity. For the gradient TLC the silica gel and cellulose plates were cut in narrow strips each of 1.5 x 9 cm and connected face-to-face. Development with methanol - benzene - formic acid 6:4:1. Detection under UV 254 nm. The method has been used for identifying the water-soluble vitamins in alcoholic extracts of Hippophae rhamnoides and of Ribes nigrum.

Bioorg. Chem. 50, 1-10 (2013). Review of the current status of research on sesame lignans, regarding analytical methods, biological activities and biosynthesis. The papers described the revolutionary change in the type of techniques used and reported some of the TLC and HPTLC methods that allowed for lignan separation and quantification.

J. Planar Chromatogr. 27, 420-427 (2014). HPTLC and TLC of fatty acids and polyphenols in plant extracts of raspberry (Rubus idaeus), strawberry (Fragaria ananassa), blackcurrant (Ribes nigrum), aronia (Aronia Medik.), Japanese rose (Rosa rugosa Thunb.) seeds, and palmetto palm (Sabal minor) fruit on silica gel or RP-18 with different micellar mobile phases containing cationic cetyltrimethylammonium bromide (CTBA), or anionic sodium dodecyl sulfate (SDS), or nonionic polioxyethylene (23) lauryl ether (Brij35).

J. Agric. Food. Chem. 63, 2893-2901 (2015). HPTLC of lecithins such as phosphatidylcholine (1) and phosphatidylethanolamine (2) in soybean and sunflower used for chocolate production on silica gel with chloroform - methanol - water - ammonia 30:17:2:1. Detection by dipping into a primuline solution (100 mg of primuline in 200 mL of acetone - water, 4:1). Quantitation by fluorescence measurement at UV 366 nm. The hRF values of (1) and (2) were 30 and 41-43, respectively. Quantitation was also performed by HPTLC-positive ionization electrospray ionization mass spectrometry (ESI-MS) and by scanning HPTLC-matrix-assisted laser desorption ionization-time-of-flight mass spectrometry (MALDI-TOFMS). Mean LODs ranged from 8 to 40 mg/kg for HPTLC-FLD, 10 to 280 mg/kg for HPTLC-ESI and 15 to 310 mg/kg for HPTLC-FLD-ESI-MS.

J. Liq. Chromatogr. Relat. Technol. 39, 303-307 (2016). HPTLC fingerprinting of 27 white wines of three sorts on silica gel with ethyl acetate – formic acid – acetic acid – water 10:1:1:2 and on RP-18 with methanol – water – formic acid 50:50:1. Detection by heating at 100 °C for 3 min, followed by dipping into Natural Product reagent (1 g of diphenylborinic acid aminoethylester dissolved in 200 mL ethyl acetate) and after drying by dipping into PEG reagent (10 g of polyethylene glycol 400 dissolved in 200 mL dichloromethane). Qualitative identification under UV 254 nm and UV 366 nm.

Food Control. 71, 234-241 (2017). HPTLC of residual aflatoxin B1 after biological detoxification on silica gel with chloroform – ethyl acetate 4:1. Quantitative determination by absorbance measurement at 365 nm.