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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Proc. Intern. Symp. on Planar Separations, Planar Chromatography 2001, pp. 201-209. TLC and HPTLC of plant extracts and catechin and epicatechin as standards on cellulose, silica gel, and cyano-, amino- and RP-18 modified silica gel with 8 different mobile phases. The best separation of catechin and epicatechin was achieved on the aminopropyl and octadecyl plates using acetone - acetic acid 93:7 and water - methanol - formic acid 84:15:1 or 69:30:1, respectively. Visualization by spraying with vanillin in sulfuric acid or by coupling with bis-diazotized sulfanilamide.
Inhibitory effect of naproxene and its 7-methoxy isomer on constitutive COX-1 and inducible COX-2. Planta med. 66, 471-473 (2000). Analytical and preparative TLC of naproxene (6-methoxy-a-methyl-2-naphthalene-acetic acid) on silica gel with n-hexane - acetone - dichloromethane 5:2: 3. Visualization under UV 254 nm.
Planta med. 66, 16-19 (2000). TLC of cycloartocarpin (artocarpin, artocarpesin, 4-prenyloxyresveratrol, artocarbene) on silica gel with ethyl acetate - hexane 1:1. Detection under UV.
J. Planar Chromatogr. 15, 442-448 (2002). HPTLC of phenolic acids (caffeic acid, protocatechuic acid, gallic acid) on silica gel with multiple development with dipropyl ether - heptane - formic acid 5:4:1. Densitometry at 254 nm.
J. Planar Chromatogr. 16, 15-18 (2003). HPTLC of 27 extracts of St John's wort on silica gel - prewashed with acetone with n-heptane - acetone - t-butyl methyl ether - formic acid 33:35:30:2. Three-dimensional chromatograms were obtained by use of a diode-array TLC scanner enabling measurements of HPTLC tracks simultaneously in the range of 200 - 600 nm. Spectroscopic HPTLC analysis combined with multivariate data analysis was shown to be suitable for characterization of the quality of herbal extracts according to both phytochemical and pharmacological criteria. New approach to the evaluation of HPTLC plates.
Proc. Intern. Symp. on Planar Separations Plan. Chrom. 25-39 (2003). TLC and HPTLC of selected flavan-3-ols [e.g. (+)-catechin, (-)-epicatechin, (+)-gallocatechin, (-)-epigallocatechin, (+)-catechin gallate, (-)-epicatechin gallate, epicatechin-(4b>8)-catechin, epicatechin-(4b>8)-epicatechin] on cellulose. The developing solutions consisted of aqueous solutions containing acetone, acetic acid, tetrahydrofuran, acetonitrile, ethyl acetate, methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, and 2-butanol as organic modifiers in various concentrations. TLC in twin-trough chambers (saturated and unsaturated) and in horizontal developing chambers, used in tank and sandwich configuration. Separations were performed at ambient temperature and humidity (20-24°C, 46-56%). Visualization after drying by immersion for 1 s into vanillin/phosphoric acid reagent. The final optimized HPTLC method with water - 1-propanol - acetic acid 80:20:1 provided a fast separation of the flavan-3-ols studied with satisfactory resolution. Ready-to-use cellulose plates must be prewashed with water. In most cases the development in horizontal chamber with sandwich configuration gave the best resolution.
CBS 81, 14-15 (1998). HPTLC-AMD of extracts on silica gel with 16-step gradient based on methanol containing 0.1 % acetic acid via dichloromethane to n-hexane. Quantification by absorbance measurement at 255, 260, 290 and 310 nm (multi wavelength scan). Precision is determined to be 3%.
J. Liq. Chrom. Rel. Technol. 27, 2087-2100 (2004). HPTLC of tetrandrine on silica gel with toluene - ethyl acetate - methanol - 28 % ammonia 100:100:50:3. Detection under UV light at 366 nm, and under white light after reaction with iodine (yellowish zones). If the plate is subsequently derivatized with anisaldehyde solution, the alkaloids show a strong blue fluorescence under UV light at 366 nm. Quantitative determination at 210 nm. The calibration curve is linear for 50 - 112.5 ng tetrandine per zone. Also HPTLC of aristolochic acids (AAs) on silica gel with the upper phase of toluene - ethyl acetate - water - formic acid 20:10:1:1 and derivatization with tin(II) chloride (to be prepared freshly: dissolve 1 g tin(II) chloride•2H2O in 1.5 mL 36 % hydrochloric acid diluted with 8 mL water), followed by heating at 100 °C for 1 min and evaluation under UV light at 366 nm. The method allows detection of 1 ppm of AA.