Anal. Biochem. 237, 24-29 (1996). Separation with different sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Clear resolution by addition of 8 M urea to the gel and use of a multiphasic buffer system employing bicine and sulfate as trailing and leading ions, respectively. Discussion of the migration of the peptides. Demonstration of the usefulness of the system for the analysis of the title compounds generated during cellular metabolism by immunolabeled peptides secreted by cell transfected with a myloid precursor protein CDOAS.

J. High Resol. Chrom. 5, 511- 512 (1982). OPTLC of DNP-amino acids (DNP-asp, -ser, -glu, -gly, -ala, -pro, -try, -val, -leu, -ile, -tyr) on silica with chloroform - CCl4 -MEK - propanol - methanol - acetic acid 30:30:20:30:15:2.

J. Formosan Medical Assoc. 81, 892-902 (1982). A dabsylation TLC procedure for qualitative analysis of urinary amino acids on silica in 4 different solvent systems, e.g. a) CCl4 - ethyl acetate - pyridine - acetic acid 60:30:10:3, b) benzene -2-chloroethynol 10:7, c) butanol-water - acetic acid 5:5:1 (upper layer) and d) butanol-water - acetic acid 5:5:0.2 (upper layer).

Acta Chimica 115, 223-229 (1984). TLC of 12 arginine-vasopressin analogues on silica with a) butanol- acetic acid - water 4:1:1, b) chloroform - methanol 7:3, c) butanol - acetic acid - water 8:5:4, d) butanol -pyridine - acetic acid -water 30:20:6:24. Detection with ninhydrin and chlorine toluidine reagents.

J. Planar Chromatogr. 4, 204-206 (1991). Description of a method for the separation of enantiomers using TLC on RP phases (C-2 and C-18) with acetonitrile – water and hydroxypropyl-ß-cyclodextrins as chiral mobile phase additive for the separation of several derivatized amino acids. Detection under UV 254 nm.

J. Liq. Chrom. & Rel. Technol. 22, 41-50 (1999). Separation of selected amino acids into their enantiomers by TLC on a chiral phase. A new valence optical topological index and valence optical Gutman index are proposed which enable distinction between isomers of L and D configuration. HPTLC of optical isomers of D and L amino acids (alanine, norvaline, norleucine, glutamic acid, phenylalanine, tyrosine, tryptophan, proline) on Chir HPTLC plates with methanol - water - acetonitrile 1:1:4. Visualization by dipping into a solution of 0.3% ninhydrin in acetone and heating at 110°C for 10 min.

J. Liq. Chromatogr. Relat. Technol. 31, 1986-2005 (2008). TLC of L-alpha-phenylalanine on silica gel (prewashed by development with methanol - water 9:1) impregnated by dipping for 2 s in a 24 mMol/L aqueous solution of copper sulfate, followed by drying for 10 min at 110 °C and dipping in 30 mMol/L proline in water - methanol 9:1. The mobile phase was n-butanol - acetonitrile - water 6:2:3. Quantitative determination by absorbance measurement at 200 nm. The ability of L-alpha-phenylalanine to undergo oscillatory transenantiomerization was demonstrated. A skeleton molecular mechanism for the same process was proposed.

J. Planar Chromatogr. 24, 16-22 (2011). A novel method is proposed for optimization of simultaneous thin-layer chromatographic separation of seven amino acids. For this purpose a useful combination of genetic algorithms (GA) with artificial neural networks (ANN) was employed. Methods investigated in this work were successfully used for prediction of resolution (RS) and optimization of the separation of model solutions containing the seven compounds. Very good correlation was achieved between predicted and calculated RS data, and low absolute and relative errors were obtained. TLC of alanine, asparagine, cysteine, leucine, phenylalanine, serine and threonine on cellulose with butanol - acetic acid - water 11:4:5 in a saturated chamber. Detection by spraying with ninhydrin reagent, followed by heating on a plate heater. The hRf values of the amino acids were 30, 36, 44, 50, 52, 72, and 79, respectively.