Technol., 1991; 453], Marcel Dekker, Inc., New York, N.Y. 1991, 310 pp. Containing chapters on instrumental TLC methods for food quality assurance.

Plenary lectures of the 32nd International Congress on Medicinal Plant Research, Antwerp, July 23.-28., 1984. Wissenschaftliche Verlagsgesellschaft, Stuttgart 1985. Review on recent progress in isolation techniques for natural products. TLC, HPTLC, PLC and centrifugal TLC of plant phenolics, alkaloids, essential oil constituents and saponins and related terpenoid glycosides. Numerous separation conditions and critical observations are reported.

Anal. Chim. Acta 624 (1), 1-15 (2008). Aminoglycosides and macrolides are important antibiotics for veterinary medicine and are widely used in the treatment of bacterial disease, and as feed additives for growth promotion. As a result the European commission set strict criteria for monitoring residues and requires testing for low levels of aminoglycosides and macrolides in foods. Therefore the development of fast, reliable, and sensitive methods for the extraction and subsequent analysis of these antibiotics is of great interest. The review discusses analytical methods for both extraction and determination of antibiotics in various food matrices focusing on the last 10 years. Extraction and clean-up methods such as deproteinization and solid-phase extraction are described, and various screening methods including TLC, EI, CE, microbiological assays, and LC combined with MS are reviewed.

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.