J. AOAC Int. 73, 270-275 (1990). TLC of zearalenone, a-zearalenol and ß-zearalenol on silica with chloroform – ethanol 97:3, detection under UV, by spraying with aluminium chloride (20 % in ethanol ) and re-examination under long-wave UV. TLC of trichothecenes (T-2 toxin, HT-2 toxin, nivalenol, fusarenon-X, neosolaniol, and deoxynivalenol) on silica with chloroform – acetone 3:2. After drying detection by spraying with 4-(p-nitrobenzyl)pyrindine, heating at 150 °C for 30 min., cooling and spraying with tetraethylenepentamine solution. New sensitive HPTLC method.

Determination of ochratoxin A in cereals, milling products from cereal and green coffee. MSZ (Hungarican Norm) 337/3 (1990). TLC of ochratoxin A on silica with benzene – methanol – acetic acid 18:1:1. Detection under UV 366 nm.

J. AOAC Int. 77, 939-941 (1994). TLC of zearalenone on silica with chloroform - acetone 9:1. Detection under UV 254 nm. Visual comparison of test spot with standard.

Chromatographia 47, 215-218 (1998). HPTLC on silica gel with toluene - ethyl acetate - formic acid 6:2:1. Quantitation by fluorodensitometry at 313 nm. Validation of the method by spiking uncontaminated extracts of maize with zearalenone over the range 10 to 320 mg/kg, with a linearity range between 10 and 80 mg/kg. Detection limit 2.6 mg/kg. Recovery > 62.8% (n=5).

J. Chromatogr. A 904 (2), 263-268 (2000). Presentation of a simple miniaturized and lower power consuming (battery, fully semiconductor based) detector cell (SeBaDeC) for the densitometric measurement of aflatoxins on TLC plates, applying an UV-light emitting diode (UV-LED) with a peak emission wavelength of 370 nm for fluorescence excitation, while a photo diode with a peak sensitivity of 440 nm in combination with a 418 nm cut-off filter is used for detecting the fluorescence intensity. Amplification of the resulting signal by means of an operational amplifier integrated circuit (OA), and direct conversion into digital signal with a ADC. Recording the signal of the serial RS232 port of a portable PC and processing it with a spreadsheet program. Detection level as low as concentration of aflatoxins of 1 ng.

Anal. Chem. 81, 3858-3866 (2009). HPTLC of microcystin LR and nodularin on silica gel with 1-propanol - ethyl acetate - water 3:5:2 with 5 % acetic acid. Detection and quantification by UV spectroscopy at 232 nm and direct identification of separated analytes on the HPTLC plate by IR-MALDI-o-TOF MS. The detection limit was 3-5 ng/zone. For detection of peptides, plates were cut and sprayed with a solution of p-anisaldehyde, followed by heating at 105 °C until purple-blue peptide spots appeared.

Food Control. 68, 310-329 (2016). Review of the methodologies to determine the occurrence of aflatoxin M1 (AFM1) and the fate of AFM1 during processing of milk and dairy products, such as yoghurt and cheeses, since 1996 until today. The review describes the application of TLC and HPTLC in raw and pasteurized milk, feta cheese, yoghurt, white cheese, ice cream and butter.