Zobrazeno 1 - 10 of 15 pro vyhledávání: '"Astrid Kaunzinger"'
1
Determination of 11-keto-boswellic acid in human plasma
Autor: Klaus Raddatz, Henning Blume, Klaus Cuda, Astrid Kaunzinger, Manfred Schubert-Zsilavecz, Alwin Baumeister, Norbert Häring, Barbara Schug, Gerhard Fischer
Publikováno v: Journal of Pharmaceutical and Biomedical Analysis. 28:729-739
A sensitive, specific, accurate, fast and reproducible GC/MS-method for the quantitative determination of 11-keto-boswellic acid in human plasma using 18alpha-glycyrrhetinic acid as the internal standard was developed and validated. 11-Keto-boswellic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc2e8d7221d2d4181dcd3446adb38ef2
https://doi.org/10.1016/s0731-7085(01)00674-4
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2
Analysis of a putative voltage-gated prokaryotic potassium channel
Autor: Erwin Lewitzki, Andreas Barth, Hartmut Michel, Winfried Haase, Astrid Kaunzinger, Teresa Ruiz, Helmut Reiländer, Daniel Ungar
Publikováno v: European Journal of Biochemistry. 268:5386-5396
Most of the completely sequenced prokaryotic genomes contain genes of potassium channel homologues, but there is still not much known about the role of these proteins in prokaryotes. Here we describe the large-scale overproduction and purification of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cea8404d6f7b53bc4a813633c80bb4ce
https://doi.org/10.1046/j.0014-2956.2001.02477.x
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3
Progress in the Authenticity Assessment of Vanilla. 1. Initiation of Authenticity Profiles
Autor: Dieter Juchelka, Astrid Kaunzinger, Armin Mosandl
Publikováno v: Journal of Agricultural and Food Chemistry. 45:1752-1757
The genuineness of vanilla is discussed by integral authenticity evaluation of vanillin and some characteristic minor compounds such as 4-hydroxybenzyl alcohol, vanillic acid, 4-hydroxybenzaldehyde, anisic alcohol, anisic acid, and 4-hydroxybenzoic a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e415335bbd4b7ca239f9dd3c81a20e13
https://doi.org/10.1021/jf9606971
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4
Stereochemical differentiation and simultaneous analysis of 3-, 4-, and 5-hydroxyalkanoic acids from biopolyesters by multidimensional gas chromatography
Autor: Astrid Kaunzinger, Birgit Maas, RÜDiger Liske, Armin Mosandl, Armin Dietrich, Frank Podebrad
Publikováno v: Journal of High Resolution Chromatography. 18:49-53
The direct enantioselective analysis of 3-, 4-, and 5-hydroxy fatty acids from biological material has been achieved by enantioselective multidimensional gas chromatography (enantio-MDGC) with heptakis(2,3-di-O-methyl-6-O-tert-butyldimethylsilyl)- or
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::202bdcd3d023b8f930f73abdb50bf9d6
https://doi.org/10.1002/jhrc.1240180111
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5
Stereoisomeric flavour compounds LXVII. 2-, 3-, and 4-Alkyl-branched acids, part 1: General approach to the synthesis of the enantiopure acids
Autor: Astrid Kaunzinger, Jorge Angles‐Angel, Jutta Gutser, Volker Karl, Petra Steuer, Armin Mosandl
Publikováno v: Chirality. 6:420-426
A general approach to the synthesis of 2-, 3-, and 4-alkyl-branched acids of high enantiomeric purity is described. The enantiopure 2-alkyl-branched acids are prepared via liquid chromatographic resolution of diastereomeric phenylglycinol amides and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c50e1c920cb51efbb701e191f580b6a3
https://doi.org/10.1002/chir.530060510
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6
tert-Butyldimethylsilyl-substituted cyclodextrin derivatives as versatile chiral stationary phases in capillary GC
Autor: Astrid Kaunzinger, Armin Mosandl, Thomas Köpke, Armin Dietrich, Volker Karl, Detmar Lehmann, Birgit Maas
Publikováno v: Journal of Microcolumn Separations. 5:421-427
tert-Butyldimethylsilylated cyclodextrin derivatives dissolved in polysiloxanes were shown to be versatile chiral stationary phases for the differentiation of important chiral food and flavor ingredients and chiral acids of biochemical and pharmaceut
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b1f507393b377a48b90084f02b7cc6a9
https://doi.org/10.1002/mcs.1220050505
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8
Stereoisomeric flavor compounds, part LVIII: The use of heptakis(2,3-di-O-methyl-6-O-tert-butyldimethylsilyl)-β-cyclodextrin as a chiral stationary phase in flavor analysis
Autor: Birgit Maas, Günther Bruche, Wilhelm Messer, Astrid Kaunzinger, Armin Mosandl, Armin Dietrich, Volker Karl
Publikováno v: Journal of High Resolution Chromatography. 15:590-593
The characteristics of the new chiral stationary phase heptakis(2,3-di-O-methyl-6-O-tert-butyldimethylsilyl)-β-cyclodextrin are outlined and compared with permethyl- and perethyl-β-cyclodextrins.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5ccb369a6602230ab6287f0ecffdd9f3
https://doi.org/10.1002/jhrc.1240150906
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9
Influence of derivatization on the chiral selectivity of cyclodextrins: Alkylated/acylated cyclodextrins and γ-/δ-lactones as an example
Autor: Armin Mosandl, Astrid Kaunzinger, Hans-George Schmarr
Publikováno v: Journal of Microcolumn Separations. 3:395-402
Selectively alkylated and acylated cyclodextrin derivatives are suitable stationary phases for capillary GC. To obtain a closer insight into the separation mechanism, an inverse substituted cyclodextrin derivative was synthesized and characterized, a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02480e3c4ebfb8ce43a60f61365cfb42
https://doi.org/10.1002/mcs.1220030503
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