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 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.
J. Pharm. Biomed. Anal. 37, 817-821 (2005). CO2 extracts of Harpagophytum procumbens root was evaluated by HPLC and HPTLC for harpagoside contents. HPTLC on silica gel with ethyl acetate - methanol - water 77:15:8 in saturated ADC chamber. Detection by dipping into anisaldehyde reagent followed by drying at 120 °C for 5 min. Quantitative determination by absorbance measurement at 509 nm. The linearity range was 0.04-0.40 mg/mL. The HPTLC method was less time consuming than HPLC, needing almost no sample pre-treatment. 15 different CO2-extracts of the plant were analysed.
Planta Med. 71, 733-738 (2005). Preparative TLC of (+)-ulein on silica gel with n-hexane - dichloromethane - methanol - diethylamine 25:20:4:1 and n-hexane - ethyl acetate - methanol - diethylamine 25:20:4:1. Detection under UV light at 254 nm.
J. pharmac. Sci. 70, 89-91 (1981). Two-dimensional TLC of 8 ginsenosides on silica RP-2 with 1a) chloroform - methanol - ethyl acetate - butanol - water 4:4:8:1:2, 1b) chloroform - butanol - methanol - water 4:8:3:4, 2) chloroform - methanol - water 13:7:2 (lower phase). Detection by spraying with 1 ml p-anisaldehyde + 1 ml H2SO4 in 100 ml methanol and drying at 120 °C.
Planta Med. 72, 488-493 (2006). Analytical and preparative TLC of ebenosin (8-(1,1-dimethylallyl)formomonetin) and 3 known isoflavonoids on silica gel with dichloromethane - hexane 3:2. Detection under UV light at 254 nm.
J. Chromatogr. Biomed. Applic. 272, 157-165 (1983). HPTLC of fluphenazine on silica with toluene - acetone 6:4. After evaporation of solvent the plate is placed in 5 % paraffin oil in toluene for 15 minutes. After evaporating the toluene, exposure to UV light for 15-20 minutes. Fluorometry at 254 nm.