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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determination of vitamin E and vinpocetine in their combined dosage form and in the presence of the alkaline-induced degradation product of vinpocetine
J. Planar Chromatogr. 29, 372-379 (2016). HPTLC of vitamin E (1) and vinpocetine (2) in its alkaline-induced degradation product (3) on silica gel with methanol – chloroform – ethyl acetate – glacial acetic acid – ammonia 60:20:20:5:1. Quantitative determination by absorbance measurement at 235 nm. The hRF values for (1) to (3) were 81, 62 and 41, respectively. Linearities were between 0.2-2 µg/zone for (1), 0.1-1.5 µg/zone for (2) and 0.1-1 µg/zone for (3). The intermediate precisions were below 0.7 % (n=3). The LODs and LOQs were 67 and 198 ng/zone for (1), 32 and 98 ng/zone for (2) and 29 and 87 ng/zone for (3). Average recoveries were 99.6 % for (1), 100.0 % for (2) and 99.9 % for (3). The results were statistically compared with those obtained by a HPLC method and no significant differences were found.
J. Planar Chromatogr. 30, 216-218 (2017). HPTLC of monocrotophos on silica gel with n-hexane – acetone 4:1. Detection by spraying with freshly prepared sodium nitroprusside reagent (1 % sodium nitroprusside in 2 N sodium hydroxide). The hRF value for monocrotophos was 80.
Food Chem. 239, 848-857 (2018). HPTLC of lipids in raw milk on silica gel with n-hexane – diethyl ether – acetic acid 85:15:2. Detection by spraying with phosphomolybdic acid in ethanol. Quantitative determination by absorbance measurement at 650 nm. The identified peaks corresponded to phospholipids, 1,3-diglycerols, 1,2-diglycerols, sterols, free fatty acids and triacylglycerols.
J. Chil. Chem. Soc. 62, 3435-3437 (2017). HPTLC of deoxynivalenol in wheat crop samples on silica gel with toluene – ethyl acetate – formic acid 6:3:1. Detection by spraying with 10 % aluminium chloride in ethanol – water 1:1, followed by heating at 120 °C for 10 min. Quantitative determination by fluorescence measurement at UV 366/>400 nm. The identity and purity of zones were confirmed by direct mass spectrometry on the plate using a TLC/MS elution head-based interface. Linearity was between 8-120 ng/zone. LOD and LOQ were 0.05 and 0.19 mg/kg, respectively. Average recovery rate was 90.1 %.
J. Planar Chromatogr. 30, 313-322 (2017). HPTLC of cyclobenzaprine hydrochloride (1) and asenapine maleate (2) on silica gel with toluene ‒ methanol ‒ chloroform ‒ ammonia solution 33 % 50:30:60:1. Quantitative determination under UV light at 290 and 220 nm for (1) and (2), respectively. The hRF values for (1) and (2) were 45 and 75, respectively. Linearity was between 5 and 50 μg/zone for (1) and (2). The intermediate precision (n=2) was <2 %. The LOD and LOQ for (1) were 1.3 and 4.4 μg/zone for (1) and 1.2 and 3.9 μg/zone for (2), respectively. Average recovery rate was 99.2 % for (1) and 99.7 % for (2). There were no significant differences between the mean percentage recoveries and the precisions compared with a validated HPLC mehod.
J. Planar Chromatogr. 30, 363-374 (2017). HPTLC of acetylsalicylic acid (1) and its related compound salicylic acid (2) on silica gel with n-hexane – diethyl ether – 80 % acetic acid 7:2:1. Good quality densitograms with well separated and symmetric peaks of (1) and (2) were achieved. Detection with the following reagents: Janus blue, bromophenol blue, bromocresol blue, hydrogen peroxide (without heating and with heating to 90 °C during 60 min), 1 % sodium hydroxide (with heating to 45 °C and also with heating to 90 °C during 60 min), brilliant green, malachite green, and thymol blue.
J. Chromatogr. A 1524, 266-272 (2017). Demonstration of the antibacterial profiling of Onopordum acanthium L. leaf extract and subsequent targeted identification of active compounds. Investigation of the extract against eight bacterial strains including two plant and three human pathogens and a soil, a marine and a probiotic human gut bacteria by TLC and off-line overpressured layer chromatography (OPLC) coupled with direct bioautography. Transfer of antibacterial fractions obtaining infusion-transfusion OPLC to HPLC-MS/MS analysis resulted in the characterization of three active compounds, two of them were identified as linoleic and linolenic acid. Adoption of OPLC method to preparative-scale flash chromatography for the isolation of the third active compound, which was identified after a further semi-preparative HPLC purification as the germacranolide, sesquiterpene lactone onopordopicrin. Pure onopordopicrin exhibited antibacterial activity that was specified as minimal inhibitory concentration in the liquid phase as well.
J. Chromatogr. A 1558, 69-76 (2018). Development of an HPTLC method for monoacylglycerols (MAG), diacylglycerols (DAG), triacylglycerols (TAG) and free fatty acids (FFA) in E 471 food emulsifiers, as a simple, rapid, sensitive and convenient screening alternative to HPLC and GC analysis. HPTLC of the samples in t-butyl methyl ether on primuline pre-impregnated LiChrospher silica gel by two-fold development, first with diethyl ether to 18 mm, then with n-pentane – n-hexane – diethyl ether 13:5:7 to 75 mm. Quantitative determination by fluorescence measurement at UV 366/>400 nm, using the cumulative signal for each lipid class and 1,2-distearin for calibration. The amounts of the lipid classes were calculated using response factors and expressed as monostearin, distearin, tristearin and stearic acid. The LOD and LOQ for 1,2-distearin were 1 and 4 ng/zone, respectively. The visual detection by fingerprint enabled an easy characterization and the direct comparison of emulsifiers through the lipid class pattern.