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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      96 036
      Separation of eight selected flavan-3-ols on cellulose thin-layer chromatographic plates
      Irena VOVK*, Breda SIMONOVSKA, H. VUORELA (*Laboratory for Food Chemistry, National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana, Slovenia)

      J. Chromatogr. A 1077 (2), 188-194 (2005). HPTLC of (+)-catechin (C), (-)-epicatechin (EC), (-)-gallocatechin (GC), (-)-epigallocatechin (EGC), (-)-epicatechin gallate (ECg), (-)-epigallocatechin gallate (EGCg), procyanidin B1, and procyanidin B2 on cellulose prewashed with water (not necessary, when water was used as developing solvent) and dried with a hair dryer, with 1) water; 2) 1-propanol - water 1:4; 3) 1-propanol - water - acetic acid 4:2:1; 4) 1-propanol - water - acetic acid 2:8:1 in horizontal developing chamber (sandwich configuration). Detection with vanillin - H3PO4 reagent. Water enabled the separation of epimers C from EC and GC from EGC, as well as the dimers procyanidin B1 and B2. Additionally C, EGC, B1 and B2 were separated from all the other compounds. The best separation of the five main catechins (EC, GC, EGC, ECg, EGCg) present in green tea extract was achieved using 1-propanol - water - acetic acid 2:8:1. The chromatograms of oak bark extract developed in solvents with higher water content (1-propanol - water 1:4 and 1-propanol - water - acetic acid 2:8:1) showed less bands than chromatograms developed in solvents with higher organic modifier content (e.g. 1-propanol - water - acetic acid 4:2:1). It was proved that such behavior was due to the presence of procyanidins beside the main component catechin.

      Classification: 8b
      96 058
      Use of selected structural descriptors for evaluation of the lipophilicity of bile acids investigated by RP HPTLC
      Alina PYKA*, M. DOLOWY, D. GURAK (*Department of Analytical Chemistry, Faculty of Pharmacy, Silesian Academy of Medicine, Jagiellonska 4, 41-200 Sosnowiec, Poland)

      J. Planar Chromatogr. 18, 465-470 (2005). HPTLC of cholic, glycocholic, glycodeoxycholic, chenodeoxycholic, deoxycholic, lithocholic, and glycolithocholic acid on RP-18 W, RP-2, and cyano phases in a presaturated chamber with mixtures of an organic modifier (methanol, dioxane, acetonitrile, acetone) and water in different volume proportions which were varied in steps of 5 % from 35 to 80 %. Detection by spraying with a 10 % aqueous solution of sulfuric acid or by dipping in a 10 % solution of phosphomolybdic acid in ethanol and heating at 120 °C for 20 min. Investigation of relationships between lipophilicity obtained by use of RP-HPTLC, experimental and theoretical partition coefficients, and selected structural descriptors.

      Classification: 2d, 23b
      96 087
      Determination of emodin and phenolic acids in the petioles of Rheum undulatum and Rheum rhaponticum
      H. Danuta Smolarz*, E. Medynska, G. Matysik (*Department of Pharmaceutical Botany, Medical University, 1 Chodzki Str., Lublin, Poland)

      J. Planar Chromatogr. 18, 319-322 (2005). HPTLC of emodin and phenolic acids (protocatechuic, homoprotocatechuic, caffeic, syringic, vanillic, ferulic, p-hydroxyphenylacetic, alpha-resorcylic, p-coumaric, gallic and ellagic acid) on silica gel in horizontal chambers with toluene - dichloromethane - ethyl acetate 4:4:1. Also two-dimensional TLC of phenolic acids on cellulose with benzene - methanol - acetic acid - acetonitrile 16:2:1:1 in the first direction and sodium formate - formic acid - water 10:1:200 in the second direction. After drying the chromatograms were observed under UV light at 254 nm before and after treatment with ammonia vapor. Derivatization was performed by spraying with either diazotized sulfanilic acid in 20 % sodium carbonate solution or with 2 % aqueous iron(III) chloride. Detection limits between 10 and 64 ng. Videodocumentation and quantitation by densitometry.

      Classification: 11a, 32e
      96 116
      Estimation of solanesol in various species of genus solanum by HPTLC
      S. MANIMARAN, V. GOVINDAN*, R. SRINIVASAN, M. NANJAN, B. SURESH (*Dept. of Pharmacognosy and Phytochemistry, J.S.S College of Pharmacy, Ootacamund 643001, Tamil Nadu, India)

      Abstract DP-41, IPC (2005). HPTLC of solanesol in n-hexane extracts of shade dried and freeze dried leaves of Solanum tuberosum, S. trilobactum, S. xanthocarpum, S. nigrum, and S. toruum on silica gel with chloroform - ethanol 48:1. Quantitative determination by absorbance measurement at 254 nm. Solanum tuberosum contained the highest amount of solanesol out of the 5 analyzed species.

      Classification: 32e
      96 137
      Development and validation of a HPTLC method for the estimation of telmisartan and hydrochlorothiazide in bulk and tablets
      N. SHAH, B. SUHAGIA, R. SHAH, C. SHAH* (*B.M. Shah College of Pharm. Edu. Res., Modasa 383315, Gujarat, India)

      Abstract G-5, IPC (2005). HPTLC of telmisartan and hydrochlorothiazide on silica gel with chloroform - methanol - toluene 2:5:5 with chamber saturation for 30 min. Detection by spraying with ninhydrin reagent. Quantitative determination by absorbance measurement at 272 nm. The linearity was in the range of 250-500 ng/spot for telmisartan and 200-700 ng/spot for hydrochlorothiazide, recovery was 99-101 %. Accuracy, precision and linearity of the method were established.

      Classification: 32a
      97 003
      Method for correction of RF values in thin-layer chromatography
      L. S. LITVINOVA (Institute of Macromolecular Compounds, Russian Academy of Siences, Bolshoi pr. 31, 199004 St. Petersburg, Russia)

      J. Planar Chromatogr. 19, 171-174 (2006). Correction of RF values to improve the reproducibility, repeatability, precision, and reliability of retention factors in TLC. HPTLC of phenacetin, acetanilide, meso-tetraphenylporphyrin, fullerene C60, anthracene, solvent green 3, Sudan I, and cytochrome C on silica gel (after heating at 120 °C for 40 min) in an S-type unsaturated and in saturated and unsaturated N-type chamber using toluene, diethyl ether, or tetrahydrofuran - cyclohexane. Detection of colorless spots under UV light at 254 nm. To improve reproducibility retention factors are calculated based on an unretained compound analog to a void volume marker in column chromatography.

      Classification: 2d
      97 048
      Screening of enrofloxacin and ciprofloxacin residues in milk by HPLC and TLC with direct bioautography
      Irena Maria CHOMA (Department of Chromatographic Methods, M. Curie-Sklodowska University, M. Sklodowska Sq. 3, 20-031 Lublin, Poland)

      J. Planar Chromatogr. 19, 104-108 (2006). HPTLC and TLC of ciprofloxacin and enrofloxacin on silica gel with dichloromethane - methanol - 2-propanol - 25% aqueous ammonia 3:3:5:2. The plate was developed in a DS chamber to the top and the separation chamber was then uncovered for about 1 cm to enable the solvent to evaporate. In this way the plate was developed continuously for 2 h. Bioautography by immersion of the plate in a microorganism solution (Bacillus subtilis), incubation for 22 h at 37 °C. Visualization by spraying with 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) solution and leaving for approximately 30 min at room temperature.

      Classification: 28a
      97 091
      Development of a HPTLC Method for in-process purity testing of pentoxifylline
      O. GROZDANOVIC, D. ANTIC, D. AGBABA* (*Faculty of Pharmacy, Institute of Pharm. Chem and Drug Anal. 11000 Belgrade, Serbia & Montenegro 11000)

      J. Sep. Sci. 28 (6), 575-580 (2005). HPTLC of pentoxifylline and related substances, impurities of reaction partners and side reaction products, on LiChrospher RP18 with acetone - chloroform - toluene - dioxane 2:2:1:1. Quantitative determination at 275 nm. Linearity (r2= 0.997), recovery (86.5-115.5 %) and determination limit (0.1-0.6 %) were evaluated and found to be satisfactory. This method enables monitoring of the synthesis as well as purity control of pentoxifylline-containing raw materials and pharmaceuticals.

      Classification: 32a
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