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:

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      128 043
      Nutritional and phytochemical profiling of nutracereal finger millet (Eleusine coracana L.) genotypes
      U. NAKARANI, D. SINGH*, K. SUTHAR, N. KARMAKAR, P. FALDU, H. PATIL (*Department of Plant Molecular Biology and Biotechnology, ACHF, NAU, Navsari, Gujarat 396 450, India,

      Food Chem. 341, 128271 (2021). HPTLC of finger millet (Eleusine coracana L.) on silica gel with n-butanol - water - acetic acid 4:1:1. Detection by spraying with ninhydrin, followed by heating at 100 °C. Amino acid profiling under UV light at 546 nm. The hRF values for 21 standard amino acids ranged from 2 to 51.

      Classification: 18a
      127 052
      Pressurized planar electrochromatography of DNS amino acids derivatives in silica gel and silanized silica gel systems with formic acid addition to the water mobile phase
      A. CHOMICKI*, T. DZIDO (*Department of Physical Chemistry, Medical University of Lublin, Chodźki 4a Str., 20-098 Lublin, Poland,

      J. Planar Chromatogr. 34, 105-111 (2021). HPTLC of dansyl derivatives of amino acids on silica gel (1) and RP-18 (2) with acetonitrile in the concentration range from 0 to 40 % in water - formic acid solution for (1) and acetonitrile in the concentration range from 10 to 85 % in water - formic acid solution for (2). Pressurized planar electrochromatography (PPEC) under the same conditions with polarization voltage 0.500 kV and separation time of 15 min. Detection under UV light. The separation selectivity is different between HPTLC and PPEC due to the electrophoretic effect in PPEC.

      Classification: 18a
      127 002
      Low temperature plasma probe mass spectrometry for analytes separated on thin-layer chromatography plates: direct vs. laser assisted desorption.
      X. GONG, D. ZHANG, I. B. EMBILE, Y. SHE, S. SHI, G. GAMEZ* (*Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas, USA;

      J Am Soc Mass Spectrom 31(9), 1981-1993 (2020). Low-temperature plasma-mass spectrometry was studied for comparison between direct desorption (DD) and diode laser assisted desorption (LD) in terms of quantitative and qualitative analysis of compounds from cellulose vs. silica gel TLC layers. Compounds (the 20 common amino acids, propofol, nicotine, cotinine, salicylamide, acetylsalicylic acid, paracetamol, caffeine, valprolactone and its isomer 4-ene-valproic acid) were applied on the TLC plates (without development) at different concentrations; a commercial mixture of acetylsalicylic acid, paracetamol and caffeine was also applied on TLC plates, developed with dichloromethane – ethyl acetate 1:50, detection at UV 254 nm and quantitative MS. In general, DD provided good results on cellulose, where LODs where between 0.01 and 2.55 ng/mm2, whereas several compounds remained undetected on silica gel. LD however provided LODs on silica gel from 0.3 to 84 pg/mm2. Tandem MS with collision-induced dissociation was implemented to improve signals, LODs and to characterize the other analytical figures-of-merits (including detection of the main fragment ions, determination of optimal laser beam width and irradiance depending on the compounds). For the two metabolites of valproic acid, the ions and fragments had identical values; therefore, a mix of the two isomers had to be applied and separated with dichloromethane – methanol 50:1 before MS; one half of the plate was visualized for control by dipping into potassium permanganate reagent (7.5g KMnO4, 50g K2CO3, 0.75g NaOH in 1L water).

      Classification: 4e, 7, 8b, 11a, 18a, 22
      126 035
      Structure–retardation factor relationship of natural amino acids in two different mobile phases of RP-TLC
      S. YOUSEFINEJAD*, F. HONARASA, S. AKBARI, M. NEKOEINIA (*Research Center for Health Sciences, Department of Occupational Health Engineering, Institute of Health, School of Health, Shiraz University of Medical Sciences, Shiraz 71645, Iran,

      J. Liq. Chromatogr. Relat. Technol. 43, 580-588 (2020). Retardation factor (hRF) of 42 amino acids in two different eluents (acetonitrile - sodium azide and 1,2 dioxane-sodium azide solutions) were predicted by different quantitative structure-retention relationship (QSRR) methods. The method analyzed the effect of sum of geometrical distances between N and O in separation of amino acids in RP-TLC.

      Classification: 2c, 18a
      90 058
      Isolation and characterization of glyoxal-arginine modifications
      M.A. GLOMB*, G. LANG, (*Inst. of Food Chem., Techn. Univ. of Berlin, Gustav-Meyer-Allee 25, TIB 4/3-1, 13355 Berlin, Germany)

      J. Agric. Food Chem. 49, 1493-1501 (2001). TLC of 5-(4,5-dihydroxy-2-imino-1-imidazolidinyl)norvaline, 5-(2-imino-5-oxo-1-imidazolidinyl)norvaline, N5-[[carboxymethyl]amino](imino)methyl]ornithine on silica gel with n-butanol - water - acetic acid - pyridine 4:2:3:3. Visualization with ninhydrin.

      Classification: 18a
      98 048
      Determination of methionine in pharmaceuticals after chromatographic separation
      F. BUHL, Monika GALKOWSKA* (*Insitute of Chemistry, Department of Analytical Chemistry, Silesian University, 9 Szkolna Street, 40-006 Katowice, Poland)

      J. Planar Chromatogr. 19, 401-404 (2006). TLC of methionine, L-cystine, calcium pantothenate, vitamin B1, vitamin B7, and p-aminobenzoic acid on silica gel in a pre-saturated chamber with n-propanol - water - chloroform 5:2:1. Quantification of methionine was based on the oxidation and reaction with leuco xylene cyanol FF solution, which formed a blue dye. Quantitative determination by absorbance measurement at 613 nm.

      Classification: 18a
      100 043
      Indirekt TLC resolution of amino acid enantiomers after derivatization with Marfey’s reagent and its chiral variants
      R. BHUSHAN*, H. BRÜCKNER, V. KUMAR, D. GUPTA (*Department of Chemistry, Indian Institute of Technology, Roorkee247 667, India;

      J. Planar Chromatogr. 20, 165-171 (2007). TLC of 17 DL amino acids derivatized with1-fluoro-2,4-dinitrophenyl-5-L-alaninamide, 1-fluoro-2,4-dinitrophenyl-5-L-phenylalaninamide, or 1-fluoro-2,4-dinitrophenyl-5-L-valinamide on silica gel with phenol - water 3:1 or on RP-18 with mobile phases containing acetonitrile and triethylamine-phosphate buffer (50 mM, pH 5.5) with saturation for 10-15 min.

      Classification: 18a
      105 087
      Simultaneous determination of irbesartan and hydrochlorothiazide by HPTLC method
      B. MEHTA*, S. MORGE (*Dept. of Chem. University of Mumbai, Santacruz (E), Mumbai, 400098, India)

      Indian Drugs 47(2), 71-74 (2010). HPTLC of irbesartan and hydrochlorothiazide on silica gel with acetone - chloroform - ethyl acetate - methanol 6:6:6:1. The plates were preconditioned for 10 min in a saturated chamber prior to development. The hRf value of irbesartan was 27 and of hydrochlorothiazide 37. The linearity was 1500-9000 ng/band and 125-750 ng/band for irbesartan and hydrochlorothiazide respectively. The average recovery for both drugs was 99.4-99.5 %.

      Classification: 17c, 18a, 32a