Anal. Chim. Acta 690 (2), 148-161 (2011). Chromatographic fingerprinting has been generally accepted as analytical method for the quality control of herbal medicines. This review describes the evolution of the regulations and guidelines on the quality control of herbal medicines, and reviews the established analytical techniques in TLC, HPLC, UHPLC, hydrophilic interaction chromatography, and GC. Emphasis is put on the most recent developments, such as miniaturized techniques, new stationary phases, analysis at high temperatures and multi-dimensional chromatography. The new chemometric data handling techniques are discussed.

J. Ethnopharmacol. 158, 454-457 (2014). The authors described how the European Pharmacopoeia provides a legal and scientific reference for the quality control of medicines. The document highlighted HPTLC as a tool for the screening of herbal drugs containing certain contaminants, such as aristolochic acids._x000D_

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.

Phytochemistry 134, 6-25 (2016). The review describes the chemistry of Dillenia species, including TLC methodologies for the analysis of flavonoids, triterpenoids and miscellaneous compounds, as well as TLC bioautography for the identification of betulinic acid and dillenic acid and their activity against E. coli and B. subtilis.

Food Chem. 233, 290-301 (2017). Review of analytical methods for the effective control of patulin contamination, including TLC validated methodologies. The paper included a reference of standard methods, including the official AOAC method where detection is achieved by spraying with 3-methyl-2-benzothiazolinone hydrazone with a limit of detection of approximately 20 mg/L.

Hoffm. A review. J. Ethnopharmacol. 220, 294-320 (2018). Review of the phyto-constituents of Arctotis arctotoides, including the application of TLC and HPTLC for the analysis of steroids and acids, alcohol and phenolics, guaianolides, germacranolide, eudesmanolides, farnesol derivatives and sesquiterpenes. The review also described bio-autographic methods on TLC plates against Gram-positive (Bacillus subtilis and Staphylococcus aureus) and Gram-negative (Escherichia coli and Shigella sonnei) bacteria.

Food Control. 97, 1-14 (2019). Review of the occurrence and contamination levels of foodborne mycotoxins in Turkey, including analyses performed on food groups and feeds in Turkey using TLC and HPTLC for the detection of aflatoxins (AF) in fruits and vegetables, AFM1 in dairy products and AFB1 in herbs and various nuts.

Drug. Metabolite Isolation and Determination, Plenum Publ. Corp. New York 55-62 (1984). Commercially available instrumentation, e.g. for plate development in its different modes and the optimization of a spotting device. Examples of applications. A brief review