J. Agric. Food Chem. 65, 8773-8778 (2017). HPTLC of aflatoxin B1 on silica gel with chloroform – ethyl acetate 4:1. Quantitative determination by fluorescence measurement at 366/>400 nm.

J. Chromatogr. A 1572, 137-144 (2018). Development of a method for the analysis of anthocyanes within the foodstuffs of plant origin by TLC on RP-18 phase (which ensures mixed-mode retention mechanism with the localized adsorption on the non-bonded silanols) with acetic acid as the mobile phase component, using two anthocyanins (cyanin and keracyanin) and two anthocyanidins (pelargonidin and delphinidin) as phytochemical standards. By triple development, distinct and symmetrically shaped chromatographic zones were obtained. Further analysis of the products of hydrolytic degradation of the test anthocyanins by MS. Identification of the hydrolytically split fractions by using the p-aminobenzoic acid reagent. Investigation of the calibration curves for cyanin, keracyanin, pelargonidin and delphinidin, and the respective LOD and LOQ values. Application of the method to identify and quantify cyanin, keracyanin, pelargonidin and delphinidin in selected alimentary products (syrups, juices and herbal infusions).

J.A.O.A.C. 67, 563-565 (1984). TLC of chloramphenicol on silica with ethyl acetate. Detection: 2 minutes exposure in jar containing solid calcium hypochlorite, 45 sec. in jar containing 37 % formaldehyde, spray lightly with aq. solution containing 1 % starch + 1 % KI. Detection limit: > 60 ng.

(Thin-layer chromatography and high pressure liquid chromatography in mycotoxin analysis.) Z. Lebensm. Unters. Forsch. 178, 79-80 (l984). TLC and HPTLC methods support each other; the TLC method is preferred when the samples to be analyzed are of variable origin while HPLC is attractive when samples are uniform or at least similar.

(Hungarian). (Determination of mycotoxins in food raw materials and food stuffs. Determination of patulin.) TLC of patulin on silica with dichloromethane - ethyl acetate 95:5, toluene - ethyl acetate - formic acid 5:4:1. Detection with 4 % phenylhydrazine solution. Detection limit: 20 ng.

Proposal of eight parameters as the criteria for the examination of plate quality.

Phytochemistry 25, 2605-2608 (1986). TLC of new hydroxycinnamic acid esters on microcrystalline cellulose with chloroform - formic acid - water 3:2: water saturated, butanol - formic acid - water 6:1:2, 10 % aq. formic acid or butanol - formic acid water 2:1:1. Detection by UV at 254 nm. Also PLC with chloroform - formic acid 3:2 and column chromatography on polyamide.

J.A.O.A.C. 69, 123-126 (1986). TLC of CPA and aflatoxins on silica. CPA on silica impregnated with 2 % ethanolic oxalic acid solution with benzene - acetic acid - methanol 90:5:7. Visualization by spraying with 1 % p-dimethylaminobenzaldehyde in 75 ml ethanol and 25 ml HCl. Aflatoxin with anhydrous ether - methanol - water 96:3:1. Patulin and griseofluvin with toluene - ethyl acetate - 90 % formic acid 5:4:1. Detection of grimeofluvin under UV 366 nm, of patulin by spraying with 0.5 % aqueous solution of 3-methyl-2- benzothiazolinone hydrazone and heating to 130 °C. Assessment by visual comparison with standards.