Cumulative CAMAG Bibliography Service CCBS

Our CCBS database includes more than 11,000 abstracts of publications. Perform your own detailed search of TLC/HPTLC literature and find relevant information.

The Cumulative CAMAG Bibliography Service CCBS contains all abstracts of CBS issues beginning with CBS 51. The database is updated after the publication of every other CBS edition. Currently the Cumulative CAMAG Bibliography Service includes more than 11'000 abstracts of publications between 1983 and today. With the online version you can perform your own detailed TLC/HPTLC literature search:

  • Full text search: Enter a keyword, e.g. an author's name, a substance, a technique, a reagent or a term and see all related publications
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      69 025
      A study of the effects of the degree of substitution of hydroxypropyl-ß-cyclodextrin used as a chiral mobile phase additive in TLC
      J.D. DUNCAN, D.W. ARMSTRONG*, (*Dept. of Chem., Univ. Missouri-Rolla, MO 654010249, USA)

      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.

      Keywords:
      Classification: 3b, 18
      84 057
      Topological indexes for evaluation of the separation of D and L amino acids by TLC
      A. PYKA, (Fac. of Pharm., Acad. of Med., 4, Jagiellonska Street, PL-41-200 Sosnowiec, Poland)

      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.

      Keywords:
      Classification: 2c, 18, 38
      102 061
      Experimental and model investigation of the oscillatory transenantiomerization of L-alpha-phenylalanine
      M. SAJEWICZ, M. GONTARSKA, L. WOJTAL, D. KRONENBACH, M. LEDA, I. R. EPSTEIN, Teresa KOWALSKA* (*Institute of Chemistry, University of Silesia, 9 Szkolna Street, 40-006 Katowice, Poland; kowalska@us.edu.pl)

      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.

      Classification: 18a, 38
      109 048
      Use of genetic algorithms and artificial neural networks to predict the resolution of amino acids in thin-layer chromatography
      T. ROLICH, Iva REZIC* (*Laboratory of Analytical Chemistry, Department of Applied Chemistry, Faculty of Textile Technology, University of Zagreb, Prilaz baruna Filipovica 28a, 10000 Zagreb, Croatia; iva_rezic@net.hr)

      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.

      Keywords:
      Classification: 18a
      115 054
      Direct thin-layer chromatographic enantioseparation of three aromatic DL-amino acids using vancomycin as the chiral selector
      M. ZI* (Zi Min), X. LIAN (Lian Xiao), X. CHEN (Chen Xue-Xian), L. YUAN (Yuan Li-Ming) (*Department of Chemistry, Yunnan Normal University, Kumming 650 500, P.R. China, apzmdah@126.com)

      J. Planar Chromatogr. 28, 248-250 (2015). TLC of phenylalanine, tyrosine and tryptophan on silica gel prepared by adding different concentrations of vancomycin with n-butanol - methanol - water - acetic acid 25:8:6:2. The best separations of the three racemic amino acids were achieved with more than 1.86 g of vancomycin in 25 g of silica gel. Vancomycin proved to be sufficiently stable and showed good enantioselectivity.

      Classification: 18a, 38
      55 070
      Amino acids analysis in series of samples by OPLC
      S. PAPP, E. TOTH, B. POLYAK

      Proc. Intern. Symposium on TLC with special Emphasis on OPLC, Szeged, 67, (1984). OPLC (OPTLC) of amino acids on silica with 1) butanol - acetic acid - water 4:1:1, 2) phenol -1 % SDS - isobutanol - propanol - butanol - acetic acid 70:28:2:2:2:1.7. Detection with ninhydrin + Cu or Cd acetate reagent. Detection with videodensitometer, coefficient of variation 6 %.

      Classification: 18a
      58 026
      Thin-layer chromatographic separation using a temperature gradient
      N. GRINBERG

      J. Chromatogr. 333, 69-81 (1985). Study on the influence of temperature gradient for different chromatographic systems using the tank developing configuration. Illustration of the method by chromatography of dansyl amino acids and aflatoxins. The enantiomers of the dansyl amino acids could be separated by 2-D-RP TLC with partial separation, then after spraying with Cu complex of N,N-di-n-propyl-L-alanine by separation in a temperature gradient. Aflatoxins B1, B2, G1, G2 were separated on silica with a temperature gradient of 20/min. over 150-180 min.

      Keywords:
      Classification: 3d, 18a, 28b
      60 090
      Overpressured layer chromatography III
      E. TYIHAK, E. MINCSOVICS

      Hungarian Scientific Instruments 62, 1-9 (1986). Separation of amino acids and S-containing amino acids on cellulose with MEK -acetonitrile - acetic acid - water 3:4:1:2. Separation of N-methylated and N-formylated L-lysine on silica with propanol - methanol - 0.1 M aqueous Na-acetate 20:3:30, Separation of ether soluble DN amino acids on silica with chloroform - carbon tetrachloride -MEK - propanol - methanol - acetic acid 30:30:20:30:15:2. Separation of corticosteroids with acetonitrile - butyl acetate 1:1 and of trigonelline from tomato juice with propanol - methanol - 0.1 M Na-acetate. Appropriate staining reagents; densitometry by absorbance.

      Classification: 13a, 18a, 22