Food Chem. 362, 130167 (2021). HPTLC of monosaccharides rhamnose, xylose, arabinose, mannose, glucose, galactose and sucrose in cladodes from Opuntia ficus-indica and Opuntia joconostle on silica gel with acetonitrile - 0.3 % ammonium hydroxide 17:3. Detection by dipping into thymol (0.2 %) and sulfuric acid (5 %) in methanol reagent, followed by heating at 95 °C for 2 min.

Planta Med. 85(2), 154-159 (2019). Two new cycloartane triterpene heterosides (cimiheraclein F and a shengmanol derivative) isolated from Actaea heracleifolia aerial parts (Ranunculaceae) were submitted to acid hydrolysis (HCl 0.4 M in methanol 60 %, 90°C, 2 h). The glycone moieties were purified and developed on TLC silica gel with ethyl acetate – chloroform – methanol – water 3:2:2:1. Detection after spraying with sulfuric acid 10 % in water and heating. The glycones were identified in both cases as L-arabinopyranose by comparison of the RF values (and of specific optical rotation) to a standard.

J. Planar Chromatogr. 33, 489-499 (2020). HPTLC of fructose (1), glucose (2) and sucrose (3) in honey on silica gel with 1-butanol-2-propanol - boric acid - water 3:5:1. Detection by spraying with 2 mL of aniline diphenylamine phosphoric acid reagent, followed by heating at 110 ºC for 10 min. The hRF values for (1) to (3) were 14, 32 and 27, respectively. Linearity was between 250 and 1250 ng/zone for (1) to (3). Intermediate precision was below 7 % (n=3). The LOD and LOQ were 22 and 67 ng for (1), 33 and 100 ng for (2) and 21 and 64 ng for (3), respectively. Average recovery was 100.7 % for (1), 101.4 % for (2) and 104.0 % for (3).

J. Planar Chromatogr. 32, 109-114 (2019). HPTLC of fructose (1), glucose (2), maltose (3), raffinose (4) and sucrose (5) in the roots of the seven Asparagus species A. adscendens, A. racemosus, A. retrofractus, A. officinalis, A. densiflorus, A. falcatus, and A. sprengeri on silica gel with propanol - ethyl acetate - water 6:3:1. Detection by spraying with a methanolic solution of diphenylamine, aniline, and ortho-phosphoric acid, followed by heating at 140 °C for 2-3 min. Quantitative determination by absorbance measurement at 600 nm. The hRF values for (1) to (5) were 55, 50, 31, 11 and 46, respectively. Linearity was between 100 and 500 ng for (1) to (5). The intermediate precision was below 2 % (n=3). The LOD and LOQ were 22 and 66 ng for (1), 13 and 40 ng for (2), 51 and 155 ng for (3), 13 and 39 ng for (4) and 76 and 229 ng for (5), respectively. Average recovery was 97.9 % for (1), 99.9 % for (2), 99.3 % for (3), 98.3 % for (4) and 97.8 % for (5).

J. Planar Chromatogr. 27, 11-18 (2014). HPTLC of fructose (1), glucuronic acid (1), galacturonic acid (3), rhamnose (4), xylose (5), arabinose (6), and galactose (7) in the seeds of Ocimum basilicum on silica gel with isopropyl acetate - ethyl acetate - ethanol - water 50:40:10:1. Detection by dipping into aniline diphenylamine o-phosphoric acid reagent (20 % of o-phosphoric acid [85%] added to 1:1 mixture of 2 % solutions of diphenylamine and aniline in acetone), followed by heating at 110 ºC for 5 min. Quantitative determination by absorbance measurement at 630 nm except for (4) which was determined at 370 nm. The hRF values for (1) to (7) were 80, 58, 51, 40, 25, 18 and 9, respectively.

Proc. Intern. Symposium on TLC with special Emphasis on OPLC, Szeged, 68 (1984). Two-dimensional TLC of sugars (e.g. mannose, glucose, fructose, ribose, xylose, ramnose, arabinose, galactose) on silica with 1) butanol-formic acid 45:5, 2) butanol-formic acid-water 35:5:5 and sugar alcohols (e.g. sorbitol, mannitol, xylenol) on silica with 1) acetone - heptane 2:1, 2) butanol- acetic acid - water 35:5:5. Detection of sugar alcohols with 0.015 % Rhodamine B in methanol and UV 254 nm; of sugars with 4 % diphenylamine in ethanol, 4 % aniline in ethanol and 85 % o-phosphoric acid 5:5:1. Study of the influence of chemical structure on TLC behaviour.

J. Planar Chromatogr. 1, 177-179 (1988). Description of the quantitative determination of glucose, fructose, saccharose, lactose and raffinose on HPTLC-amino plates combined with post-chromatographic derivatization by two different procedures. Application for sugar analysis in different matrices.

Elelmiszervizsgalati Közlemenyek 38, 277-281 (1992). TLC of mono- and disaccharide on silica with butanol - acetone - benzene - water 75:25:5:2:3. Detection by spraying with aniline - diphenylamine - phosphoric acid 10:10:2 reagent.