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. Planar Chromatogr. 24, 312-315 (2011) HPTLC of methanolic extracts of L. tibetica on silica gel (prewashed with methanol) with hexane - ethyl acetate - formic acid 12:7:1 for three furofuranolignans (sylvatesmin, (+)-piperrtol, horsfieldin), beta-sitosterol, and oleanolic acid, and with chloroform - methanol - water - formic acid 70:25:4:2 for four furofuranolignans (phillyrin, tibeticoside A, lantibeside C, and lantibeside), verbascoside and isoverbascoside in a twin-trough chamber with saturation for 20 min. Detection by immersion in ethanolic sulfuric acid for 2 s followed by heating for 5 min at 100 °C. The hRf values were 17, 25, 29, 51, 60, 70, 66, 49, 46, 19, and 21 for sylvatesmin, (+)-piperrtol, horsfieldin, oleanolic acid, beta-sitosterol, phyllirin, tibeticoside A, lantibeside C, lantiboside, verbascoside and isoverbascoside, respectively.
J. of Chromatogr. A 1258, 94-100 (2012). Study of seven angiotensin-converting enzyme (ACE) inhibitors (enalapril, quinapril, fosinopril, lisinopril, cilazapril, ramipril, benazepril) to evaluate the correlation between their absorption and UHPLC–MS and RP-TLC hydrophobicity data (f0 or C0 parameters, respectively). Their absorption values were in the range of 25–60 % and calculated KOWWIN logP values ranged from -0.94 to 6.61. In order to obtain reliable correlation (r2 = 0.7208) between absorption and ACE inhibitors lipophilicity the solubility data (logS) must be considered, as independent variable, simultaneously with KOWWIN logP. Study of the relationships between literature available and absorption data predicted by multiple linear regression (MLR) using logS values besides chromatographically obtained hydrophobicity parameters C0 (r2 = 0.6424) or f0 (r2 = 0.6762) indicates that these parameters could be used in ACE inhibitors absorption evaluation. The UHPLC–MS method provides the direct application of experimentally obtained f0 values. Mathematical conversion of C0 parameters to logC0 values was necessary based on requisite for probability value of regression analysis (P < 0.05) for better MLR correlation of ACE inhibitors absorption with C0 parameters (RP-TLC) and logS. Definition of the accordance and differences between hydrophobicity parameters obtained by UHPLC–MS and RP-TLC.
J. Planar Chromatogr. 25, 320-325 (2012). HPTLC of ursolic acid in the leaves of Diospyros melanoxylon on silica gel with chloroform - methanol 19:1. Detection by dipping in 5 % methanolic sulphuric acid reagent and heating at 105 °C for 3 min. Quantitative determination by absorbance measurement at 540 nm. Linearity was in the range of 50-450 ng/zone for ursolic acid. Limits of detection and quantification were found to be 20 and 40 ng/zone. Recovery (by standard addition) was 97.5 %.
J. Liq. Chromatogr. Relat. Technol. 35, 1429-1443 (2012). HPTLC of azorubin (1) and sunset yellow (2) in powders for jelly desserts on silica gel with n-butyl alcohol - acetic acid - ethanol - water 10:2:1:5. Quantitative determination by absorbance measurement at 485 nm for (2) and 515 nm for (1). The hRf values of (1) and (2) were 45 and 53, and selectivity regarding matrix was given. Linearity was between 100-400 ng/zone for (1) and 200-450 ng/zone for (2). The %RSD values for repeatability studies were below 2. The limits of detection and quantification were 9 and 19 ng/zone, for (1) and 11 and 23 ng/zone for (2), respectively. Recovery was higher than 96.9 % for (1) and 95.7 % for (2).
J. Planar Chromatogr. 25, 445-449 (2012). HPTLC of bergenin in the stem-bark and roots of Mallotus phillippensis on silica gel with ethyl acetate - methanol - acetic acid - formic acid 16:2:1:1. Quantitative determination by absorbance measurement at 284 nm and by TLC-MS using the TLC-MS Interface. The hRf of bergenin was 49. Linearity was in the range of 100-600 ng/zone. Limits of detection and quantification were 29, 37 and 98 ng/zone, respectively. Intermediate intra-day/inter-day precision was 1.1 % (n=6). Recovery was between 96.6 and 98.9 %.
J. Planar Chromatogr. 25, 559-565 (2012). HPTLC of zafirlukast on silica gel with toluene - methanol - acetone 7:2:1. Quantitative determination by absorbance measurement at 240 nm. Linearity was in the range of 50-400 ng/zone. Limits of detection and quantification were 16 and 50 ng/zone, respectively.
J. Liq. Chromatogr. Relat. Technol. 35, 2396-2407 (2012). HPTLC of vanillin in the roots of Decalepis hamiltonii Wight and Arn on silica gel with toluene - ethyl acetate 9:1. Quantitative determination by absorbance measurement at 254 nm. The hRf value of vanillin was 42. Linearity was in the range of 2-12 µg/zone. Limits of detection and quantification were 1.3 and 3.9 µg/zone. The intermediate/inter-day/intra-day precision was 1.3 % (n=3), respectively. Recovery was between 99.4 and 100.3 %.
J. Planar Chromatogr. 25, 200-207 (2012). New horizontal developing chamber with advantages for stepwise gradient elution in RP HPTLC. It is shown that a previously developed computer program can be successfully applied to predictive calculations of solute retention in stepwise gradient elution.