J. Liq. Chromatogr. Relat. Technol. 39, 281-285 (2016). HPTLC bioautography of Potentilla species on silica gel with diethyl ether – methanol – formic acid 150:50:5:1. Direct bioautography by dipping into a bacterial suspension of Bacillus subtilis for 8 s, following incubation at 37 °C for 17 h. Visualization by spraying with 0.2 % MTT (thiazolyl blue tetrazolium bromide) aqueous solution, followed by incubation at 37 °C for 0.5 h.

J. Planar Chromatogr. 29, 190-194 (2016). HPTLC of ranolazine in tablet formulations on silica gel with butanol – acetic acid – water 3:1:1. Quantitative determination by absorbance measurement at 270 nm. The hRF value of ranolazine was 56. Linearity was in the range of 100-400 ng/zone. Intermediate precisions were below 1.4 %. The LOD and LOQ were 15 and 50 ng/zone. Recoveries were between 98.2 and 101.1 %.

J. Agric. Food Chem. 64, 9203-9213 (2016). HPTLC of transglycosylated products of epigallocatechin gallate using dextransucrase on silica gel with acetonitrile – water 17:3. Detection by dipping into a mixture of 0.5 % N-(1-naphthyl)ethylenediamine and 5 % sulfuric acid in methanol, followed by heating at 125 °C for 5 min.

Food Res. Int. 89, 565-573 (2016). HPTLC of galacturonic acid (1), galactose (2), glucose (3), mannose (4), arabinose (5), xylose (6) and rhamnose (7) in neutral hydrolysates from 5 plant secondary raw materials (sugar beet pulp, walnut shell, cocoa bean husk, onion peel and pea pods) on silica gel, impregnated by immersion in 0.5 M solution of monosodium phosphate, three times with acetonitrile – water – ethyl acetate – 1-propanol 17:3:4:4. Detection by dipping into diphenylamine-aniline-phosphoric acid reagent (2 % solution of diphenylamine and aniline, each in phosphoric acid – methanol 1:4), followed by heating at 150 ºC for 3 min. Qualitative identification using white light illumination. The hRF values for (1) to (7) were 1, 15, 22, 28, 37, 54 and 83, respectively.

Food Control. 71, 234-241 (2016). HPTLC of residual aflatoxin B1 after detoxification by Bacillus licheniformis CFR1 on silica gel with chloroform – ethyl acetate 4:1. Quantitative determination by absorbance measurement at 365 nm. The percentage of AFB1 degradation was calculated.

J. Ethnopharmacol. 203, 127-162 (2017). Comprehensive review of the genus Peganum, including phytochemistry and analytical methods such as TLC, TLC-bioautography and HPTLC for the determination of analytes such as harmaline, harmine, vasicine and vasicinone.

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. Chromatogr. Sci. 54 (7), 1077-1083 (2016). Development of a method for phenolic profiling in the assessment of authenticity of poplar-type propolis by comprising HPTLC, image processing and chemometric approach. TLC fingerprinting by applying modern TLC equipment in combination with software for image processing, pattern recognition by using the principal component analysis. Characterization of phenolic profile was performed along with the determination of the botanical and geographical origin of propolis. The results revealed that Central and Southeastern European propolis samples are rich in flavonoids, and phenolic compounds proved to be suitable markers for the determination of European propolis authenticity.