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:

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      104 034
      TLC in a search for structural limitations of spontaneous oscillatory in-vitro chiral conversion
      M. SAJEWICZ, D. KRONENBACH, M. GONTARSKA, M. WRÓBEL, R. PIETKA, Teresa KOWALSKA* (*Institute of Chemistry, Silesian University, 9 Szkolna Street, 40-006 Katowice, Poland; kowalska@us.edu.pl)

      Alpha-hydroxybutyric and mandelic acids. J. Planar Chromatogr. 22, 241-248 (2009). TLC of alpha-hydroxybutyric acids and mandelic acid on silica gel, prewashed with methanol - water 9:1 and impregnated by dipping for 2 s in 0.05 g/L aqueous copper acetate solution, with dioxane - water 9:1 at 22 +/- 2°C. Quantitative determination by absorbance measurement during 16 days at 326 nm. Spontaneous oscillatory in-vitro chiral conversion was observed for alpha-substituted propionic acids as well as chiral carboxylic acids with two and four carbon atoms.

      Classification: 11a
      106 055
      A HPTLC densitometer determination of sinapic acid in Chandrasur (Lepidium sativum)
      Preeti NAYAK*, S. UPADHYAYA, Anubha UPADHYAYA (*Dept. of Crop & Herbal Physiology, College of Agriculture, JNKV, Jabalpur, M.P., India)

      J. Sci. Res. 1(1), 121-127 (2009). An HPTLC method is described for qualitative and quantitative estimation of sinapic acid in Lepidium sativum (Brassicaceae). Methanolic extracts of the plant material were subjected to chromatographic separation on HPTLC silica gel with n-butanol - acetic acid - water 4:1:5. Derivatization with anisaldehyde sulfuric acid reagent, followed by heating at 110 °C for 10 min. Denstiometric quantification at 326 nm. Identification was confirmed by comparison of hRf-values of sample and standard.

      Classification: 11a
      106 073
      Determination of lacidipine by thin-layer chromatographic densitometric, spectrophotometric method and modified vierordt’s method in presence of its photodegradates
      M. TARES*, L. BEBAWY, S. MOHAMMED (*Analytical Dept. Faculty of Pharmacy, Cairo University, Egypt)

      Analytical Chemistry - An Indian Journal 8(3) (2009) (without page number). A TLC method has been developed for determination of lacidipine in presence of its photodegradates. TLC on silica gel with toluene - acetone - methanol - 25 % ammonia 30:10:3:1. Densitometric evaluation at 284 nm. The chromatographic method was compared with a derivative spectrophotometric method and vierordt’s method and was found suitable for analysis of lacidipine in bulk drug as well as in dosage form.

      Classification: 11a
      107 057
      A stability-indicating HPTLC assay for the simultaneous determination of diclofenac sodium and omeprazole in commercial capsules
      D. PANGAVHANE*, Smita LONDHE, Glory MAHAJAN, L. JAIN (*Dept. of Q. A. Techning, Sinhgad College of Pharmacy, Vadgaon (Bk.), Pune, India)

      62nd Indian Pharmaceutical Congress Abstract No. F-257 (2010). TLC of diclofenac sodium (DS) and omeprazole (OZ) in commercial capsules on silica gel with toluene – ethyl acetate 1:4. The hRf values were 35 and 6 for DS and OZ, respectively. The linearity of the proposed method was in the range of 100-3000 ng/zone (r2=0.9973) for OZ. The drugs were subjected to oxidation, acid and alkaline hydrolysis, photolysis, wet heat, dry heat and neutral degradation. Degradation products produced as a result of stress studies did not interfere with the detection of DS and OZ and the assay can thus be considered stability-indicating.

      Classification: 11a
      109 031
      Development and validation of stability indicating HPTLC method for simultaneous estimation of paracetamol, aceclofenac and rabeprazole in combined tablet dosage formulation
      N. MALLIKARJUNARAO, D. GOWRISANKAR* (*JNTUK Dept. of Pharmaceutical Science, Kakinada, A.P, India)

      International Journal of PharmTech Research 3(2), 909-918 (2011). TLC of paracetamol, aceclofenac and rabeprazole on silica gel (prewashed with methanol) with ethyl acetate - methanol - glacial acetic acid 90:10:1 with chamber saturation for 20 min. The hRf value of paracetamol, aceclofenac and rabeprazole was 79, 63 and 39. Quantitative determination by densitometry in absorbance mode at 275 nm. The method was linear in the range of 100-500 ng/band for paracetamol, 20-100 ng/ band for aceclofenac, and 2-10 ng/band for rabeprazole. The recovery was between 99.2-101.0 %.

      Classification: 11a
      112 039
      High-performance thin-layer chromatographic analysis for the simultaneous quantification of four phenolic compounds in green, red, and black fruits of Trapa natans var
      A. NIRANJAN*, S. VERMA, A. LEHRI, D. AMIA (*Central Instrumentation Facility, Council of Scientific and Industrial Research, National Botanical Research Institute, Lucknow 226001, India, abhishek_niranjan@yahoo.co.in)

      bispinosa Roxb. (Singhara). J. Planar Chromatogr. 26, 316-321 (2013). HPTLC of gallic acid (1), caffeic acid (2), quercetin (3) and kaempferol (4) in the green, red, and black fruits of Trapa natans var. bispinosa Roxb. (Singhara) on silica gel with toluene - ethyl acetate - formic acid 13:11:2. Quantification by absorbance measurement at 282 nm. The hRf values for compounds (1) to (4) were 23, 34, 38 and 46, respectively. Linearity was in the range of 1000-1500 ng/zone for (1) to (4). LOD and LOQ were 116 and 351 ng/zone for (1), 135 and 409 ng/zone for (29, 92 and 278 ng/zone for (3) and 87 and 263 ng/zone for (4), respectively. Average recoveries were 98.5 % for (1), 98.2 % for (2), 96.4 % for (3) and 97.3 % for (4). Intermediate/interday/intra-day precision was below 3 % (n=6).

      Classification: 11a
      121 027
      Aristolic acid derivatives from the bark of Antidesma ghaesembilla
      S. SCHÄFER, Stefan SCHWAIGER*, H. STUPPNER (*Institute of Pharmacy and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria; stefan.schwaiger@uibk.ac.at)

      Planta Med. 83, 1097-1102 (2017). The fractionations on a silica gel column (with a gradient of ethyl acetate, methanol and petroleum ether/dichloromethane) of the dichloromethane and methanol extracts of Antidesma ghaesembilla bark were monitored by TLC on silica gel with chloroform – methanol – water – formic acid 290:20:1:1 or 290:50:1:1, respectively. From fractions of the dichloromethane extract, chavibetol, sitostenone, asperphenamate, daucosterol, 5,7-dimethoxy-aristolochic acid II and 10-amino-5,7-dimethoxy-aristolic acid II were later isolated, the last one was detected by Dragendorff reagent. From fractions of the methanol extract, glucosides of aristolic acid and of vanillic acid were isolated and separated by preparative TLC with chloroform – methanol – acetone – formic acid 450:75:25:2. This preparative TLC yielded protocatechuic acid (hRF 51) and a mixture (hRF 14–19), from which a methyl-phloroglucinol glucoside was isolated by gel exclusion chromatography.

      Classification: 6, 7, 11a, 14, 17c
      58 066
      (An other possibility of development of carcinogenic substance from non-carcinogenic precursors occurring in food stuffs
      E. UZVOLGYI. Egeszsegtudomany 30, 32-41 (1986) (Hungarian)

      Detection with p-dimethylamino-benzaldehyde reagent, video densitometry.

      Keywords: food analysis
      Classification: 11a