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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J. Chromatogr. A 1218 (19), 2737-2744 (2011). Investigation of new cellulose tribenzoate/gypsum layers in the ratio up to 8:1 (w/w) for the chiral resolution of closely related aromatic ketones (e.g. tetralones and indanones), alcohols (e.g. benzhydrols) and racemates or enantiomers of other compound classes (e.g. dinitrophenyl amino acids). 16 racemates were baseline or partially resolved by eluting with methanol or 2-propanol/water mixtures on 4:1 (w/w) layers among 22 investigated compounds. The study provided better understanding of the retention and resolution mechanisms on this chiral stationary phase, however, some results were unexpected and confirmed the complexity of enantioseparation mechanisms. Evidence from experimental tests is necessary. Quantification of the investigated compounds by densitometry in the visible region of cellulose tribenzoate/gypsum plates after their exposure to iodine vapours.
J. Planar Chromatogr. 24, 211-213 (2011). HPTLC of exo-polysaccharides from bacterial fermentation and a series of mono-, oligo-, and polysaccharide reference solutions on silica gel with chloroform - toluene - 35 % formic acid - methanol 10:2:2:7 in a twin-trough chamber saturated for 1 h. Detection of starch-type polysaccharides by placing the plate into a twin-trough chamber saturated with iodine vapor. After drying determination by densitometry in absorbance mode at 400 nm. The plates were then immersed for 1 min in a solution of 10 % concentrated sulfuric acid in n-propanol - toluene 1:1, followed by heating at 115 °C for 10 min. The zones were evaluated visually and densitometrically at 400 nm.
J. Liq. Chromatogr. Relat. Technol. 32, 1273-1288 (2009). HPTLC of Sudan I (1), II (2), III (3), IV (4), Sudan Red B (5), Sudan Red 7B (6), Sudan Red G (7), Para Red (8), FD&C Orange 2 (9), Butter Yellow (10), Citrus Red 2 (11), Toluidine Red (12), and Disperse Orange 11 (13) in paprika, chili, and curry on RP-18 with acetonitrile - ammonia 25 % 19:1. Quantitative determination by absorbance measurement at absorption maxima of each dye. The hRf values of compounds (1) - (13) were 61, 54, 48, 29, 18, 11, 69, 63, 56, 48, 39, 18 and 11, respectively. Visual detection limits were 3 ppm for most dyes in either matrix, 5 ppm for Sudan I, 13 ppm for Disperse Orange, and 7 ppm for Butter Yellow. The limits of detection by densitometry were lower by a factor of 2 for all dyes and values of 1-3 ppm were reached except for Disperse Orange with a limit of detction of 7 ppm. Average recoveries ranged from 95.0-110.8 %. The HPTLC method is successfully applied in the routine control of illegal dyes in food by surveillance authorities.
and Gentianella acuta by thin-layer chromatography) (Chinese). J. of Inner Mongolia Univ. for Nationalities (Natural Sci. Edit.) 26(1), 71-72 (2011). TLC of the extracts of the title medicinal herbs on silica gel with 1) chloroform - methanol - water - formic acid 28:2:2:1, detection by spraying with 10 % sulfuric acid in ethanol and heating at 105 °C until the zones were detected; 2) chloroform - methanol - ammonia 40:10:1, detection by spraying with iodine solution. Identification by comparison of the fingerprint with the main components gentianine, isoorientin, flavone, isobellidifolin, swerchirin, and 1,5,8-trihydroxy-3,4-dimethoxyxanthone.
J. of Chromatogr. B 879 (30), 3565-4573 (2011). Presentation of a novel “target constituent knock-out” strategy applied for preliminary screening of antibacterial constituents in Calculus bovis. The strategy contained the following steps: 1) the single constituents (A-F) in C. bovis samples were knocked out by TLC on silica gel with toluene - acetic acid - water 30:25:2, detection under UV 366 nm; 2) the knocked-out constituents were identified by UPLC–ELSD; 3) the antibacterial activities of the knocked-out constituents and C. bovis samples on Staphylococcus aureus were evaluated by microcalorimetry combined with principal component analysis; 4) the activities of the knocked-out constituents and the total extract of C. bovis, also the interaction properties between these single constituents and the total extract were elucidated. The strategy proved to be useful for screening active constituents and elucidating the multi-component interactions in C. bovis, and helpful in understanding the pharmacodynamic actions and the quality control of traditional Chinese medicines.
Planta Med. 77, 548 (2011). HPTLC of forskolin and extracts from rhizomes of Coleus forskohlii on silica gel with toluene - methanol 12:1. The hRf value of forskolin was 27. Anisaldehyde-sulfuric acid reagent was used for spraying followed by heating of the plate at 105 °C for 5 min. Quantitative determination by densitometric scanning in absorbance mode at 545 nm.
J. Planar Chromatogr. 24, 470-474 (2011). TLC of methanolic seed extracts with harmine, harmaline, and galanthamine as standards on silica gel with ethyl acetate - methanol - ammonia 20:3:1. Detection by inspection under UV 366 nm and by spraying with Dragendorff’s and vanillin-sulfuric acid reagent as well as by bioautography assay. For the bioautographic assay, AChE was dissolved in 150 mL of 0.05 M TRIS/hydrochloric acid buffer at pH 7.8. 150 mg bovine serum albumin was added for stabilization.The plates were dipped in the enzyme stock solution and incubated in a humid chamber at 37 °C for 20 min. For detection of the enzyme, solutions of 1-naphthyl acetate in ethanol and of Fast Blue B salt in water were prepared and mixed immediately before spraying the plate. The limits of AChE inhibitive activity were 10 ng/zone for all.
J. of Hunan Agr. Univ. (Natural Sci. Edit.) 38 (1), 102-105 (2012). Catechins are flavanols and the group includes mainly epigallocatechin gallate (EGCG), epigallocatechin (EGC), epicatechin gallate (ECG), and epicatechin (EC), among which EGCG is in majority (50-80 %). Based on investigation of the TLC procedures in literatures for the separation of catechin in tea, an optimized HPTLC system was presented. HPTLC of the extracts of green tea and white tea on silica gel with chloroform – acetone – formic acid 125:75:22. Detection by spraying with 1 % vanillin in concentrated hydrochloric acid and heating at 105 °C for 3 min.