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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Abstract No. F-252, 61st IPC (2009). HPTLC of tenofovir on silica gel with n-butanol - acetic acid - water 4:1:1. The hRf value was 58. Quantitative determination by absorbance measurement at 260 nm. Linearity was in the range of 120-600 ng/band. The compound was subjected to different stress conditions (acid, alkali, oxidation, photodegradation and thermal) and degradations products were well resolved from the main component.
J. Planar Chromatogr. 22, 287-291 (2009). HPTLC of the biomarkers gallic acid, lupeol, oleanolic acid, and stigmasterol and plant extracts on silica gel with toluene - ethyl acetate - formic acid 5:5:1 for gallic acid and with toluene - ethyl acetate 4:1 for lupeol, oleanolic acid, and stigmasterol in a saturated twin trough chamber. Quantitative determination by absorbance measurement at 272 nm. Detection of oleanolic acid, lupeol, and stigmasterol by dipping in anisaldehyde reagent followed by heating at 110 °C for 5 min. Densitometric evaluation at 652 nm.
Abstract No. 9452, IHCB (2009). HPTLC of capsaicin on silica gel with toluene - ethyl acetate 3:2. The hRf value of capsaicin was 38. Quantitative determination by absorbance measurement at 280 nm. The method was linear in the range of 100-1000 ng/spot. Capsaicin was subjected to different stress conditions (alkali, acid, oxidation, thermal). The method is suitable for separation of capsaicin from its degradation products and can be used to indicate stability.
J. Chromatogr. A 1217 (23), 4868-4872 (2010). Comparison of the kinetic performance, measured by plate height, of high-performance thin-layer chromatography (HPTLC), high-performance liquid chromatography (HPLC) and pressurized planar electrochromatography (PPEC). HPTLC on RP18W with mobile phases composed of acetonitrile - buffer. The HPLC column was packed with the same adsorbent, which was scrapped from an RP18W HPTLC plate. An additional HPLC column was packed with C18-type silica based (LiChrosorb RP18) adsorbent of 5 µm particle diameter. The plate height of both HPLC and PPEC systems depends on the flow velocity and the migration distance of the mobile phase. As test solution prednisolone succinate was used. The best performance was obtained by the PPEC system. The separation efficiency of the systems was investigated and confirmed by use of a test component mixture composed of six hormones.
J. Planar Chromatogr. 23, 233-236 (2010). HPTLC of trans-citral and cis-citral in lemongrass oil on silica gel with toluene - ethyl acetate 17:3 in a twin-trough chamber saturated for 15 min (at 25 °C and 55 % RH). Detection by spraying with vanillin-sulfuric acid reagent. Quantitative determination by absorbance measurement at 595 nm. Intra-day and inter-day precision were evaluated by replicate (n = 6) analysis of samples (trans-citral at 450, 900, and 1800 ng/band, and cis-citral at 470, 940, and 1880 ng/band). The linear range was 225-3600 ng/band for trans-citral, and 470-3760 ng/band for cis-citral. The correlation coefficient r was 0.9933 for trans-citral and 0.9937 for cis-citral. Intra-day precision (n = 6) was < 3.56 and 5.66 % for trans- and cis-citral, respectively. Inter-day precision was assessed to be < 3.47 and 5.52 % for trans- and cis-citral by repeating the intra-day assay on three different days. Repeatability of sample application and peak-area measurement was 0.98 %, determined by performing six replicate analyses of the same band (1800 ng/band trans-citral and 1880 ng/band cis-citral). The RSD of recovery of trans and cis-citral was in the ranges 1.36-3.25 and 1.64-3.47, respectively.
Densitometric analysis of flecainide in tablets. J. Planar Chromatogr. 23, 65-69 (2010). TLC of some antiarrhythmic compounds (disopyramide phosphate, verapamil hydrochloride, flecainide acetate, mexiletine hydrochloride, and tocainide hydrochloride) on RP8 and RP18 silica gel with organic-aqueous mobile phases containing citrate or acetate buffers at different pH in a horizontal chamber. The best separation of individual and mixed drug standards was achieved with tetrahydrofuran - citrate buffer (pH 4.45) 3:7. Flecainide acetate was identified and quantified by UV densitometry at 225 and 310 nm. Linear relationships were obtained between peak height or peak area and amount in the range 6.0 to 12.0 µg/spot, the correlation coefficient r was 0.990. Precision (RSD 1.1-5.9 %) and accuracy (96.2-103.6 %) were satisfactory.
Talanta, 80 (3), 1045-1051 (2010). Review on chromatographic methods for synthetic food dyes, including the following techniques: TLC, HPTLC, traditional column chromatography, HPLC, ion-pair chromatography, RP HPLC, and high performance ion chromatography, demonstrated by using examples in different conditions for each technique.
Int. J. Chem Sci 7(2), 986-992 (2009). A validated HPTLC method is reported for estimation of rofecoxib and tizanidine hydrochloride in combined dosage form. HPTLC on silica gel with methanol - ethyl acetate 1:1. The hRf value of tizanidine was 45 and of rofecoxib 67. Densitometric evaluation at 254 nm. The method was linear in the range of 180-260 ng/band for tizanidine and 2000-3000 ng/band for rofecoxib. Recovery was in the range of 99.5 - 102.5 % for both compounds. The method was suitable for routine quality control of combine dosage form.