Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Stefanie Diem"'
Autor:
Gerhard Bringmann, Kim Messer, Miriam Münchbach, Stefanie Diem, Wilfried Kuhn, Markus Herderich, Hans-Willi Clement, Christine Stichel-Gunkel, Doris Feineis
Publikováno v:
Journal of Chromatography B. 767:321-332
An improved sensitive assay for the determination of the dopaminergic and serotonergic neurotoxin 1-trichloromethyl-1,2,3,4-tetrahydro-β-carboline (TaClo) is presented, based upon on-line coupling of high-performance liquid chromatography with elect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34ff3b72e0829152dbb63afe642b8a9b
https://doi.org/10.1016/s1570-0232(01)00589-x
https://doi.org/10.1016/s1570-0232(01)00589-x
Publikováno v:
European Food Research and Technology. 213:439-447
Continuing our studies on the formation of tryptophan-derived glycoconjugates, we observed that the reactivity of tryptophan was significantly higher towards D-ribose in comparison to D-glucose. Detailed analysis of the reaction products obtained fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4edc7801253393adce498b25876975b4
https://doi.org/10.1007/s002170100376
https://doi.org/10.1007/s002170100376
Autor:
Stefanie Diem, Markus Herderich
Publikováno v:
Journal of Agricultural and Food Chemistry. 49:5473-5478
Numerous carbohydrate-derived beta-carbolines have been identified for the first time in model reactions of tryptophan with glucose and ribose, as well as in food samples. Extending these structural studies, we performed detailed investigations to el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abafa8fc782e1a91f6b557f846d53c09
https://doi.org/10.1021/jf010379o
https://doi.org/10.1021/jf010379o
Autor:
Gerhard Bringmann, Stefanie Diem, Markus Heubes, Markus Herderich, Jan Schlauer, Michael Wohlfarth, Wael Saeb, Heiko Rischer
Publikováno v:
Bringmann, G, Wohlfarth, M, Rischer, H, Heubes, M, Saeb, W, Diem, S, Herderich, M & Schlauer, J 2001, ' A photometric screening method for dimeric naphthylisoquinoline alkaloids and complete
structural eludication of a dimer in crude plant extracts, by the LC−MS/LC−NMR/LC−CD Triad ', Analytical Chemistry, vol. 73, no. 11, pp. 2571-2577 . https://doi.org/10.1021/ac001503q
structural eludication of a dimer in crude plant extracts, by the LC−MS/LC−NMR/LC−CD Triad ', Analytical Chemistry, vol. 73, no. 11, pp. 2571-2577 . https://doi.org/10.1021/ac001503q
An efficient evaluation procedure for the chemical screening and on-line structural elucidation of dimeric naphthylisoquinoline alkaloids has been developed. The method is based on the lead tetraacetate oxidation of the central binaphthalene core of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a039f4ecbcc986f93a98ab5b1f07105
https://doi.org/10.1021/ac001503q
https://doi.org/10.1021/ac001503q
Publikováno v:
Carcinogenesis. 21:2079-2084
The incidence of esophageal adenocarcinoma is increasing rapidly. In rats, surgically induced duodenoesophageal reflux is carcinogenic. One proposed mechanism of carcinogenesis is based on the reaction of physiological bile acids with nitrite to prod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff3d0c3f7881034086a850fca0bc2c67
https://doi.org/10.1093/carcin/21.11.2079
https://doi.org/10.1093/carcin/21.11.2079
Autor:
W. Föllmann, A. Dörrenhaus, A. Flieger, K. Golka, Gisela H. Degen, Kerstin Groß-Steinmeyer, J. Weymann, H. G. Koebe, M. Metzler, Hans-Ulrich Humpf, E.-M. Schmelz, F. I. Meredith, A. H. Merrill, Martin Fein, Karl-Hermann Fuchs, Stefanie Diem, Markus Herderich, Elke Richling, Dietmar Häring, Peter Schreier, Marc Vollenbröker, Karl Eichner, Monika Hofer, Christine Janzowski, Richard N. Loeppky, Gerhard Eisenbrand, Wolfgang Wörner, Martina Müller, Hans-Joachim Schmitz, Dieter Schrenk, Matthias Baum, Werner Köhl, Steven S. Hecht, Shantu Amin, F. Peter Guengerich, Martin Burkart, Aribert Vetter, Eva Ritter, Christiane Meilike, Harry Scherthan, Heinrich Zankl, A. Genzlinger, I. Zimmermann, V. Glaab, E. Samimi, B. L. Pool-Zobel, Robert Landsiedel, U. Andrae, A. Kuhlow, M. Scholtyssek, H. R. Glatt, Andrea Hartwig, U. D. Gröblinghoff, Y. Hiemstra, L. H. F. Mullenders, S. Guth, D. Seng, S. Böhm, B. Mußler, Eric Jacobs, S. E. Kulling, Leane Lehmann, S. Mayer, Michael Glei, B. Spänkuch, Gerhard Rechkemmer, Wilhelm Stahl, S. Nicolai, A. Clairmont, H. Sies, Matthias Schneider, Kerstin Diemer, Karin Engelhart, Wolfgang E. Trommer, Hans K. Biesalski, Annette Kopp-Schneider, Werner K. Lutz, Stefan O. Müller, Marko Schmitt, Wolfgang Dekant, Helga Stopper, Josef Schlatter, R. Simmering, Heiko Schneider, M. Blaut, Holger Pforte, Jürg Hempel, Gisela Jacobasch, Ellen Niederberger, Susanne Meiers, W. C. Tang, D. Marko, Uwe Wenzel, Sabine Kuntz, Stefan Storcksdieck, Ulrike Jambor, Hannelore Daniel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56a1445b60d163bcc31bd9b62ed3326c
https://doi.org/10.1002/3527606246.ch4
https://doi.org/10.1002/3527606246.ch4
Autor:
Gerhard, Bringmann, Miriam, Münchbach, Doris, Feineis, Kim, Messer, Stefanie, Diem, Markus, Herderich, Hans-Willi, Clement, Christine, Stichel-Gunkel, Wilfried, Kuhn
Publikováno v:
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences. 767(2)
An improved sensitive assay for the determination of the dopaminergic and serotonergic neurotoxin 1-trichloromethyl-1,2,3,4-tetrahydro-beta-carboline (TaClo) is presented, based upon on-line coupling of high-performance liquid chromatography with ele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::bb8cac0d2d45f151663cb1c2ccb620b5
https://pubmed.ncbi.nlm.nih.gov/11885861
https://pubmed.ncbi.nlm.nih.gov/11885861
Publikováno v:
Journal of agricultural and food chemistry. 49(12)
Motivated by the identification of numerous novel tetrahydro-beta-carboline-carboxylic acids in food samples, we studied the reactions of tetrahydro-beta-carbolines in the presence of nitrosating agents. The anticipated formation of nitroso derivativ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0fdac6665ce87196ed29b49955c1ecb
https://pubmed.ncbi.nlm.nih.gov/11743798
https://pubmed.ncbi.nlm.nih.gov/11743798
Autor:
Stefanie Diem, Markus Herderich
Publikováno v:
Journal of agricultural and food chemistry. 49(5)
The formation of various carbohydrate-derived beta-carbolines was observed when model reactions of tryptophan with glucose were studied by means of HPLC with diode array detection, as well as by means of HPLC-MS. Isolation of these compounds and subs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19789332a22e5b861e2465fede42bdc8
https://pubmed.ncbi.nlm.nih.gov/11368624
https://pubmed.ncbi.nlm.nih.gov/11368624
Publikováno v:
Journal of agricultural and food chemistry. 48(10)
In extracts prepared from various fruits as well as in fruit juices a single tryptophan glycoconjugate was detected by HPLC-MS analysis. Product ion spectra demonstrated the N-glycosidic linkage of a hexose moiety to the indole nitrogen. For structur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::467b8c161c589b160d35ba999deb215e
https://pubmed.ncbi.nlm.nih.gov/11052755
https://pubmed.ncbi.nlm.nih.gov/11052755