J. Planar Chromatogr. 24, 274-280 (2011). Presentation of new reagents and visualization methods which enable the detection of particular substances. The best of them provide high selectivity and low detection limits and lead to a reliable analysis of the developed chromatogram. Three groups of chemical reactions are used for detection: oxidation, reduction, and complexation, as well as precipitation of colored precipitates. Oxidation and reduction are most widely used due to their selectivity, which allows detection and identification of the separated substances. Like this the target substance can be selectively visualized, as for example antioxidants in complex natural matrices. Innumerable chemical, physical, and biological methods of visualization are known. Required are new, more efficient reagents fo a selective visualization of a defined part of a substance or, in some cases, for a specific determination of a specific substance. The article describes the detection of food ingredients, medicines and pharmaceuticals, organic compounds not present in food, and inorganic compounds.

Chinese J. Sci. & Technol. Review 17, 220-221 (2013). Zhihe Piba Keli pill is a TCM compound for the treatment of cough. For quality control, microemulsion TLC of Stemona sessilifolia (Miq.) Miq., Morus alba L. and Cynanchum glaucescens (Decne.) Hand.-Mazz on polyamide thin-films with (SDS - n-butanol – n-heptane 2.7:6.3:1.0) – formic acid 9:1, detection at UV 366 nm. Demonstration by applying to real life samples indicated that the procedure was suited for quality control.

Food Chem. 210, 200-211 (2016). Review of the principles and applications of matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) in food science and related fields. The review described the combination of MALDI-MSI and HPTLC, including the visualization of phospholipids in chicken egg yolk on silica gel with acetonitrile – water 1:1.

Trends Anal. Chem. 86, 25-38 (2017). Review of methodologies for the detection of adulterants in honey, including the application of HPTLC based on the fructose/glucose ratio and the sucrose content.

J. Liq. Chromatogr. Relat. Technol. 40, 863-871 (2017). Comprehensive literature review during 1983-2016 of the application of TLC for the identification, separation, and determination of surfactants, including the use of green solvents and ionic liquids.

J. Liq. Chromatogr. Relat. Technol. 41, 301-308 (2018). Review of history and principles of rotational planar chromatography, overpressured layer chromatography, planar electrochromatography, and thin layer chromatography in the magnetic field. Strengths and weaknesses of each of these techniques were also discussed.

(Hungarian). (Modern methods of planar liquid chromatography.)

Pharmacology (Yao Xue Tongbao) 20, 42-46 (l98S). (Chinese) (High performance thin-layer chromatography and its application in pharmaceutical analysis.) A review with 16 references.