Antitumor evaluation of cyclic peptides and macrolides from Lissoclinum patella. J. of Natural Products 52, 732-739 (1989). TLC of cystine, threonine and thiazole amino acids on cellulose with butanol - water - acetone 4:1:1. Identification by 1H NMR and eims.

J. Chromatogr. 515, 205-212 (1990). Description of the preparation of porous glass sheets for TLC. TLC of DNS-amino acids with chloroform and benzene - acetic acid 19:1, of free acetic acid with butanol - acetic acid - water 10:1:1 after derivatization to fluorescent compounds with fluorescamine, of inorganic cations with butanol - benzene - 1 M nitric acid - 1 M hydrochloric acid 75:69:4:2, and of anions with acetone - water 96:4. The sheets are stable toward strong acids, alkalis and mechanical scratching.

Chromatographia 32, 278-284 (1991). Presentation of a new chiral ligand exchange selector for hydrophobic stationary phase modification from selective alkylation of L-histidine at the pyrrolic nitrogen atom in its imidazolic ring. Test of its performance on reverse-phase HPTLC plates treated with copper acetate. Separation of amino acids with various aqueous solvents. Comparison of the retention data with thermodynamic complex formation parameters.

J. Chromatogr. 653, 213-302 (1993). Reverse-phase TLC of the DL-racemates of nine proteinogenic amino acids after conversion to their dansyl derivatives, using the chiral selector ß-cyclodextrin in the mobile phase together with either aqueous acetonitrile or aqueous methanol as an organic modifier.

Detection and determination of taurin in energy drinks. GIT Fachz. Lab. 6, 619-623 (1996). TLC of taurin on silica with 1-propanol - water 7:3 after chamber saturation (1-2 h). Detection by spraying with 1% ninhydrin solution and heating for 3 min at 120 °C. Semiquantitative determination against standards.

J. Planar Chromatogr. 10, 447-452 (1997). TLC of organic acids (malic, citric, tartaric, ascorbic acid), carbohydrates (fructose, sucrose, galacturonic acid), fat-soluble vitamins (vitamin D1, D2, tocopherols), amino acids and anthocyanins on corn starch layers, rice starch layers, talc layers, and impregnated corn starch layers with ethanol - n-butanol - water - conc. NH3 8:6:3:3 for organic acids, 2-propanol - formic acid - water 20:1:5 for amino acids, acetone - conc. acetic acid 3:2 for fat-soluble vitamins, n-propanol - benzyl alcohol - water - formic acid - dioxane - benzene 10:27:5:4:10:20 for sugars, and n-butanol - glacial acetic acid - water - benzene 60:40:20:1 for anthocyanins. Detection of organic acids by adding fluorescein (0.02 g) to 100 mL of the mobile phase or by spraying with bromophenol blue reagent; of amino acids with ninhydrin-lutidine reagent; of fat-soluble vitamins with antimony(III)chloride solution in chloroform; and of carbohydrates by spraying with a freshly prepared solution prepared from 4% diphenylamine in ethanol, 4% alanine in ethanol and 85% phosphoric acid, mixed in the ratio 5:5:1. Quantification by densitometry at 254 or 366 nm.

Sz. Nyiredy, A. Kakuk (eds.): Planar Chromatography 2000, Lillafüred, Hungary, 24-26 June 2000, Res. Inst. for Med. Plants, p. 173-181. After prechromatographic derivatization with dansyl chloride OPLC of biogenic amines on HPTLC silica gel with n-hexane - n-butanol - triethylamine 900:100:81 and n-hexane - n-butanol 4:1. Densitometry at 305 nm. The main biogenic amines in red wines were putrescine (41%), agmatine (33%), tyramine (13%) and spermidine (<10%), in white wines were putrescine (37%), tyramine (36%), agmatine (20%) and cadaverine (<10%). OPLC of resveratrol on TLC silica gel with chloroform - methanol 25:2.

J. Liq. Chrom. & Rel. Technol. 25, 1633-1639 (2002). HPTLC of L-lysine hydrochloride on RP-18 with concentrating zone, precleaned with dichloromethane - methanol 1:1, with 1-butanol - acetic acid - deionized water 3:1:1. Detection by spraying heavily and evenly with ninhydrin reagent (0.3 g of ninhydrin dissolved in 100 mL of 1-butanol plus 3 mL of acetic acid); after drying heating at 110°C for 15 min. Densitometry at 610 nm.