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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Food Chemistry 132, 549-553 (2012).. New HPTLC-based method to examine quantitatively the free radical scavenging activity of plant extracts. After chromatographic separation of polar compounds, and immersion of HPTLC plates in methanolic DPPH radical reagent, bleaching was observed and recorded using a photo camera and data analysis was carried out using an image processing software. The method is simple, fast and efficient for free-radical scavenging activity analysis of phytochemicals and crude plant extracts.
J. Planar Chromatogr. 24, 344-347 (2011). HPTLC of ivermectin (IVM) and albendazole (ALB) on silica gel with toluene - ethyl acetate - glacial acetic acid 12:8:1 in a twin-trough chamber saturated for 30 min. Quantitative determination by densitometry in absorbance mode at 247 nm. Linearity was between 0.12 and 0.54 µg/band for IVM and 8 and 36 µg/band for ALB. The recovery was between 98-101 % for IVM and ALB. The hRf value was 39 for IVM and 62 for ALB. LOD and LOQ were 0.02 and 0.09 µg/band for IVM and 0.08 and 0.1 µg/band for ALB. The intra-day and inter-day precision (n = 6) was 0.6 % and 1.1 % for IVM and 0.6 % and 1.2 % for ALB, respectively. Recovery (by standard addition) ranged from 98-101 % for both compounds.
J. Planar Chromatogr. 25, 571-574 (2012). HPTLC of theanine in tea extracts on silica gel with n-butanol - acetone - acetic acid - water 7:7:2:4. Detection by dipping into a ninhydrin reagent for 3 s, followed by heating at 105 °C for 5-15 min. Quantitative determination by analysis of green channels of photographs using the CP Atlas 2.0 software. The hRf of theanine was 35. Linearity was in the range of 1.4-14 ng/zone. The intermediate/inter-day/intra-day precision was below 0.7 % (n=3). Recovery (by standard addition) was between 95.7 and 102.5 %.
J. of Chromatogr. A 1241, 103-111 (2012). Development of a simple, fast, and efficient HPTLC method for the simultaneous quantitative determination of alcohols and acetates in Haitian vetiver essential oils (Chryzopogon zizanioides) and its acetylated form. TLC on silica gel with n-hexane – chloroform – ethyl acetate 16:12:1 at 47 % relative humidity. Detection with vanillin – sulfuric acid reagent. Quantification of the analytes by densitometry in absorbance mode at 530 nm. Preparation of the reference mixtures of alcohols and acetates by fractionation of Haitian vetiver oil or vetiver acetates, followed by purification of the fractions of interest by means of OPLC. Determination of the chemical composition of each reference fraction by using GC-MS and GC×GC-MS, and of their overall purity by HPTLC with good linearity (r2 = 0.9995 for alcohols, r2 = 0.9996 for acetates) in a concentration range of 40–200 ng/zone.
J. Planar Chromatogr. 25, 361-362 (2012). HPTLC of pigments in wheatgrass on sucrose-impregnated silica gel prepared by dipping the plates into a sucrose solution (400 g granulated sucrose/1 L distilled water), followed by heating at 110 °C for 20 min. Development with n-hexane - acetone 37:13. Detection by absorbance measurement between 400 and 800 nm. Sucrose impregnation prevents the degradation of the pigments during the analysis.
J. Liq. Chromatogr. Relat. Technol. 35, 280-293 (2012). HPTLC of darifenacin hydrobromide in bulk and in tablet dosage form on silica gel with toluene - acetone - methanol 3:1:1. Quantitative determination by absorbance measurement at 286 nm. The hRf value of darifenacin hydrobromide was 34 and selectivity regarding matrix was given. Linearity was between 50 and 450 ng/zone. The intermediate/inter-day/intra-day precision was below 1.4 % (n=6). The limits of detection and quantification were 30 and 91 ng/spot, respectively. Recovery (by standard addition) was between 98.8 and 100.8 %.
J. Planar Chromatogr. 25, 295-300 (2012). HPTLC of vanillin-ß-D-glucoside (1), p-hydroxybenzaldehyde (2), vanillic acid (3), p-hydroxybenzoic acid (4) and vanillin (5) on silica gel with n-hexane - chloroform - methanol 5:36:4 + 1 drop glacial acetic acid as mobile phase. Quantitative determination by absorbance measurement at 254 nm for (3) and (4), 280 nm for (1) and (2) and 313 nm for (5). The hRf values for compounds (1) to (5) were 9, 62, 57, 42 and 77, respectively. Linearity was in the range of 24-121 ng/band for (1), 7-33 ng/band for (2), 20-102 ng/band for (3), 21-106 ng/band for (4) and 14-70 ng/band for (5). Limits of detection and quantification were 8 and 20 ng/band for (1), 2 and 6 ng/band for (2), 14 and 20 ng/band for (3), 6 and 20 ng/band for (4) and 4 and 8 ng/band for (5), respectively. Intermediate/inter-day/intra-day precision was below 1.4 % (n=6). Mean recovery for the compounds was between 96.8 and 101.4 %.
J. of China Pharm. 21 (3), 22-23 (2012). Rubingxiao tablet is a herbal TCM preparation prescribed to treat mastitis and hyperplasia of mammary glands. Quality control by qualitative identification of its major component drugs and quantitative determination of tetrahydropalmatine in it. TLC of the extracts of the preparations on silica gel 1) for Epimedium davidii Franch, with ethyl acetate – butanone – formic acid – water 10:1:1:1, detection at UV 366 nm, followed by spraying with 1 % aluminium chloride in ethanol and viewing under UV 366 nm; 2) for Astragalus mongholicus, with chloroform – methanol 10:1, detection by spraying with 10 % sulfuric acid in ethanol and heating at 105 °C until the zones were visible, evaluation at UV 366 nm; 3) for Poria cocos, with toluene – ethyl acetate – formic acid 40:10:1, detection by spraying with 2 % vanillin in sulfuric acid - ethanol 1:4 and heating at 105 °C until the zones were visible, viewing under daylight.