J. Chromatogr. B 752 (2), 311-322 (2001). The peptide mix obtained from in-gel or on-blot degestion wax analysed directly after degestion or after concentration on POROS R2 beads. 2 DE of Mycobacterium bovis BCG Chicago cell proteins. Eight protein spots were identified using four preparation procedures for MALDI-MS. Overall, on-blot degestion was as effective as in-gel degestion. Whereas higher signal intensity resulted after concentration, hydrophilic peptides are better detected by direct measurement of the peptide mix without POROS R2 concentration.

obshchej. chim. 46, 1633-1638 (1982). (Russian). (Fragments of cell-proteins and its analogues. II. Synthesis of hexapeptides which correspond to the protamines salinine and iridine in their middle and endpart.) TLC of peptides on silica with a) 2-butanol-3 % NH3 100:44, b) water - acetic acid -1-butanol 13:1:10, c) phenol- water 8:2. Detection with ninhydrin or iodine vapors.

Chromatographia 18, 33-36 (1984). For each individual acid an optimum pH value exists at which the distribution coefficient reaches a maximum. The optimum pH values can be easily determined from chromatographic data. The linear correlation between the static distribution coefficients and the RM values permit the direct calculation of the distribution coefficient from the chromatographic data. TLC of the dansyl derivatives on silica with ether - acetic acid - methanol 90:5:5.

J. Liquid Chrom. 10, 3653-3657 (1987). TLC of 15 amino acids on silica, impregnated with 0.5, 0.2 and 0.1% zinc acetate, cadmium nitrate, and mercuric chloride, with butyl acetate - methanol - acetic acid - pyridine 20:20:5:5.

Anal. Biochem. 214, 329-331 (1993). TLC of title compounds on silica with 2-methylbutan-2-ol - t-butanol - 25% NH3 - acetone 1:2:2:8. Detection by exposing for 4 or 16 hrs to a storage phosphor screen. Quantification by autoradiography. Comparison of the results with those obtained by HPLC.

J. Planar Chromatogr. 16, 220-226 (2003). TLC of 24 amino acids (i.a. glycine, L-hydroxyproline, DL-alanine, DL-serine, L-proline, L-tyrosine, DL-valine, L-leucine, DL-iso-leucine, DL-nor-leucine, L-lysine monohydrochloride) on silica gel impregnated with micellar copper sulfate solution as stationary phase and a water-in-oil microemulsion as mobile phase. This system has been proposed for selective separation of DL-phenylalanine from other amino acids.

J. Planar Chromatogr. 22, 65-71 (2009). Presentation of two simple and rapid HPTLC methods for early detection of the effects of herbicides using two different groups of plant biomarkers, which were developed as field tests (Herbicide Weed Response test - HWR-Test). Phytochemical changes can be detected before any morphological changes are visible on the plants. These changes are defined as biomarkers and can be detected by HPTLC-screening. After overall identification of the phytochemical biomarker pattern, two different biomarker groups, carbohydrates and amino acids, were detected using modified reagents for color reactions. Evaluation under daylight and videodensitometric analysis of digital images by VideoScan software. The screening method was previously described [H. W. Ravn, M. Hjorth, L. Lauridsen, P. Kudsk, S. K. Mathiassen, L. Mondolot, Bull. Environ. Contam. Toxicol. 75, 236-245 (2005)].

J. Planar Chromatogr. 26, 180-189 (2013). HPTLC of 2,4-dinitrophenyl-5-L-valine amide derivatives of some amino acids (leucine, isoleucine, valine, asparagine, cysteine, tryptophane) L and D-enantiomers on RP-18 with aqueous buffer pH 2.2 (1.47 mM citric acid, 0.06 mM disodium hydrogen phosphate) and acetonitrile 50 %. The statistic evaluation of the migration distance compared with pressurized planar electrochromatography (PPEC) shows similar RSD.