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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      105 081
      A comparative evaluation of medicated oils prepared using ayurvedic and modified processes
      P. LAHORKAR*, K. RAMITHA, V.BANSAL, D.B. ANANTHA NARAYANA (*Gerbal Research Laboratory, Hindustan Unilever Research Centre, 64 Main Raod, Whitefield, Bangalore 560066, India)

      Ind. J. Pharma. Science 71 61, 656-662 (2009). Medicated oils prepared both by Ayurvedic as well as modified process were evaluated for fingerprint profiling by HPLC and HPTLC. HPTLC of methanolic extracts of the oils on silica gel with chloroform methanol 9:1 and toluene - ethyl acetate 4:1 for general fingerprint profiling; with toluene - ethyl acetate - formic acid 5:4:1 for flavonoids and with toluene - ethyl acetate - diethyl amine 7:2:1 for alkaloids. Evaluation under 254 nm and 365 nm. Detection by treatment with NP-PEG reagent for flavonoids and Dragendorff reagent for alkaloids.

      Classification: 32e
      106 054
      Identification of ketoprofen in drug formulation and spiked urine samples by micellar thin-layer chromatography and its quantitative estimation by high performance liquid chromatography
      A. MOHAMMAD*, S. SHARMA, S. BHAWANI (*Analytical Research Lab., Dept. of Applied Chemistry, Faculty of Engineering & Technology, Aligarh Muslim Univ., Aligarh 202002, India, alimohammad08@gmail.com)

      International Journal of ChemTech Research 2(1), 89-96 (2010). A micellar thin layer chromatographic method has been reported for identification of ketoprofen in drug formulation and spiked urine samples, followed by quantification of the drug by HPLC both in formulation and spiked urine samples. TLC on amino layer with a micellar mobile phase of 0.5 % aqueous solution of sodium dodecyl sulphate -Triton X100 - acetone 16:10:3. The drug was extracted from spiked urine samples with ethylene dichloride containing 10 % each of isomyl alcohol and diethyl ether, then the organic phase was evaporated and the residue was taken up in acetonitrile. Derivatization by exposure to iodine vapor and by spraying with Dragendorffs reagent. The hRf value of ketoprofen was 50.

      Classification: 11a
      106 136
      Development of chromatographic and free radical scavenging activity fingerprints by thin layer chromatography for selected Salvia species
      L. CIESLA, D. STASZEK, M. HAJNOS, Teresa KOWALSKA, Monika HAJNOS* (*Department of Inorganic Chemistry, Medical University of Lublin, 6 Staszika Street, Lublin, Poland,monika.hajnos@am.lublin.pl)

      Phytochem. Anal. 22, 59-65 (2011). TLC and free radical scavenging fingerprints of nineteen Salvia species on silica gel with toluene - ethyl acetate - formic acid 60:40:1 for the less polar constituents and ethyl acetate - water - formic acid - acetic acid 100:26:11:11 for the medium and highly polar substances. After drying at room temperature for 15 min derivatization with vanillin sulfuric acid reagent (1 g vanillin with 20 % sulfuric acid in methanol) followed by heating for 5 min at 105 °C. Quantitative determination by absorbance measurement at 254 nm. Free radical scavenging properties were investigated by spraying the plate with DPPH radical reagent (0.2 %) in methanol and left at ambient temperature for 30 min. The strongest free radical scavenging activity was observed for rosmarinic acid, with an hRf of 70.

      Classification: 32e
      106 179
      Chromatographic behavior of food additives on thin layers of titanium(IV) silicate ion-exchanger
      V. GHOULIPOUR, S. AMINI, A. HAGHSHENAS, S. WAQIF-HUSAIN* (*Chemistry Department, Faculty of Science, Science and Research Branch, Islamic Azad University, P. O. Box 14515-775, Poonak-Hesarak, Teheran, Iran; syedwaqifhusain@yahoo.com)

      J. Planar Chromatogr. 23, 250-254 (2010). TLC of 30 food additives (aldehydes, organic acids, esters and alcohols, and various sodium salts) on titanium(IV)silicate ion-exchanger with 10 different mobile phases: e. g. methanol, heptane - diethylether 4:1, aqueous ammonia - methanol - ethyl acetate 1:3:6, methanol - aqueous ammonia 9:1, methanol - ethanol 17:3, 0.5 M ammonium sulfate solution, 0.25 M, 0.5 M and 0.1 M potassium bromide solution, and phosphate buffer pH 2.5 in a twin-trough chamber without chamber saturation. Detection by spraying with 1 % iron chloride solution, 0.5 % potassium permanganate and 3 % barium chloride solution 1:1, 1 % ninhydrin in ethanol, 2 % phosphomolybdic acid in ethanol, and 5 % potassium dichromate in concentrated sulfuric acid. The study shows that the quality of separation depends to a large extent on the mobile phase, and selectivity is achieved by varying the composition of the mobile phase.

      Classification: 35b
      107 027
      Dealing with charged-coupled device noise in thin-layer videodensitometry
      L. KOMSTA (Med. Univ. of Lublin, Dep. of Med. Chem., Faculty of Pharm., Jaczewskiego 4, 20-090 Lublin, Poland)

      Optimization of several image-denoising techniques. Acta Chromatographica 21(3), 355-367 (2009). Different techiques for videoscan denoising are presented. Due to the charged-coupled devices (CCD) noise can be a serious problem during videoscanning, especially when scanning dark plates with weakly fluorescent spots. Optimization of several kind of filters (averaging, circular, Gaussian, Savitzky-Golay, median, Wiener, FIR) and wavelet shrinkage (twelve mother wavelets from the Daubechies, Symmlet, and Coiflet family, five decomposition levels, and soft/hard thresholding) against noise autocorrelation or mean-squared error to the reference image obtained by grabbing and averaging 256 CCD frames. The median filter provided the best results. The other filters except Gaussian and wavelet shrinkage at high decomposition level were also sufficient. The Gaussian filter and wavelet shrinkage at low decomposition level could not be recommended.

      Classification: 3f
      107 106
      Analysis of lycopene in nutritional supplements by silica gel high-performance thin-layer chromatography with visible-mode densitometry
      J.D. VASTA*, J. SHERMA (*Lafayette College, Department of Chemistry, Easton PA 18042-1782, USA)

      Acta Chromatographica 20(4), 673-683 (2008). Presentation of a quantitative method for the analysis of lycopene in nutritional supplements consumed to reduce the risk of prostate cancer and other forms of cancer and cardiovascular disease. HPTLC on silica gel with petroleum ether – dichloromethane 9:1. Quantification by densitometry at 416 nm. Four products containing 300 µg, 3 mg, 5 mg, or 10 mg lycopene plus other ingredients were quantified using a lycopene standard: the measured amounts ranged from 77.7 to 98.1 % of the stated label values. The accuracy by spiked blank analysis was within 1.90 % of theoretical values for the 3 mg softgels and 1.10 % of theoretical values for the 10 mg softgels. The precision of replicate analyses showed a RSD of 1.44 % for the 10 mg softgels and 2.39 % RSD for the spiked blank for the 3 mg softgels. The results obtained for Lycopene standards available from two other companies showed 55.6, 57.6, and 20.0 % of the minimum amount expected from the stated label values.

      Classification: 30b
      107 131
      Simultaneous densitometric TLC analysis of aceclofenac, paracetamol, and chlorzoxazone in tablets
      V.K. MAHAJAN*, S.B. BARI, A.A. SHIRKHEDKAR, S.J. SURANA (*R.C. Patel College of Pharmacy, Shirpur, Dist. Dhule (M.S.), 425 405 India)

      Acta Chromatographica 20(4), 625-636 (2008). TLC of of aceclofenac, paracetamol, and chlorzoxazone on silica gel (prewashed with methanol) with toluene – 2-propanol – ammonia 10:10:1. Detection and quantification by densitometry at 274 nm. The hRf values of aceclofenac, paracetamol, and chlorzoxazone were 28, 72 , and 51, respectively. The linearity was in the range of 400–1400 ng/band for aceclofenac, 2–7 µg/band for paracetamol, and 1–3.5 µg/band for chlorzoxazone, with r=0.9995, 0.9993, and 0.9996, respectively. The recovery of aceclofenac was 99.5-100.4 %, for paracetamol 100.0-100.5 %, and for chlorzoxazone 99.4-99.8 %.

      Classification: 32c
      107 152
      (Determination of gentamicin in fermentation broth by thin-layer chromatography) (Chinese)
      X. YANG* (Yang Xuming), J. ZHANG (Zhang Jiali), J. LI (Li Jianghua) , J. FANG (Fang Jun) (*School of Med. & Pharm., Jiangnan Univ., Wuxi, Jiangsu 214122, China)

      J. of Food Sci. & Biotechnol. 27(5), 129-133 (2008). TLC of gentamicin on silica gel with the lower phase of chloroform – methanol – 25 % ammonia 5:4:3 and after chamber saturation with the upper phase of the developing solvent. Detection by exposure to iodine vapor. Identification by comparison of the hRf values with the standards of the main components of gentamicin (Cl, C1 and C2). The results were compared with results obtained by HPLC and good agreement between both methods was found.

      Classification: 32c
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