Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Petra Hentschel"'
Autor:
Maximilian Kuehnle, Petra Hentschel, Marc P. Bayer, Benjamin Dietrich, Paul Schuler, Karsten Holtin, Jens Rehbein, Klaus Albert, Marc David Grynbaum
Publikováno v:
Journal of Separation Science. 30:2382-2390
An overview upon modern analytical techniques for the isolation, separation, and structural identification of the essential bioactive carotenoid bixin is given. Isolation from biological matrices is performed by matrix solid phase dispersion (MSPD).
Publikováno v:
FEMS Microbiology Letters. 259:260-268
The major autolysin of Staphylococcus aureus (AtlA) and of Staphylococcus epidermidis (AtlE) are well-studied enzymes. Here we created an atlA deletion mutant in S. aureus that formed large cell clusters and was biofilm-negative. In electron microgra
Autor:
Petra Hentschel, Klaus Albert, Dietmar G. Schmid, V. Passler, Kurt Haselwandter, S. Reiter, Graeme J. Nicholson, Günther Winkelmann
Publikováno v:
BioMetals. 19:335-343
A novel trishydroxamate siderophore, named basidiochrome, was isolated as the principal siderophore from low-iron culture filtrates of Ceratobasidium and Rhizoctonia species which are known as mycorrhizal fungi associated with orchid roots. Ion-excha
Autor:
Petra Hentschel, Klaus Albert, Karsten Putzbach, Péter Molnár, József Deli, Marc David Grynbaum, Jens Rehbein
Publikováno v:
Journal of Chromatography A. 1112:285-292
Thermal and iodine-catalyzed photochemical ( Z / E )-isomerization of deoxylutein II [(3 R ,6′ R )-3-hydroxy-3′,4′-didehydro-β,γ-carotene, anhydrolutein I] ( 2 ), the dehydration product of lutein [(3 R ,3′ R ,6′ R )-β,ɛ-carotene-3,3′
Autor:
Karsten Putzbach, Manfred Krucker, Petra Hentschel, Graeme J. Nicholson, Marc David Grynbaum, Klaus Albert, Jens Rehbein
Publikováno v:
Journal of Separation Science. 28:1685-1693
HPLC atmospheric pressure chemical ionization (APCI)/MS, GC MS, HPLC diode array detection (DAD), and NMR were used for the identification of astaxanthin and astaxanthin fatty acid esters in krill (Euphausia superba Dana). Matrix solid phase dispersi
Publikováno v:
Magnetic resonance in chemistry, 43(9), 747-754
The protein kinase ZAP-70 is involved in T-cell activation and interacts with tyrosine-phosphorylated peptide sequences known as immunoreceptor tyrosine activation motifs (ITAMs). We have studied the regulatory phosphorylation sites in the tryptic fr
Publikováno v:
Chirality. 24:1074-1076
The titration of the (S)-enantiomer of omeprazole with the (R)-enantiomer in chloroform-d(1) is monitored by continuous-flow capillary microcoil (1)H NMR spectroscopy employing a microcoil with a detection volume of 1.5 µl. The observed changes of t
Publikováno v:
Chirality. 24(12)
The titration of the (S)-enantiomer of omeprazole with the (R)-enantiomer in chloroform-d(1) is monitored by continuous-flow capillary microcoil (1)H NMR spectroscopy employing a microcoil with a detection volume of 1.5 µl. The observed changes of t
Autor:
Klaus Albert, Friedrich Götz, Alexandra Pelz, Karsten Putzbach, Petra Hentschel, Karsten-Peter Wieland
Publikováno v:
The Journal of biological chemistry. 280(37)
Most Staphylococcus aureus strains produce the orange carotenoid staphyloxanthin. The staphyloxanthin biosynthesis genes are organized in an operon, crtOPQMN, with a sigma(B)-dependent promoter upstream of crtO and a termination region downstream of
Autor:
Marc David Grynbaum, Andrew G. Webb, Karsten Putzbach, Manfred Krucker, Klaus Albert, Petra Hentschel
Publikováno v:
Journal of pharmaceutical and biomedical analysis. 38(5)
The development of miniaturized hyphenated systems such as capillary high-performance liquid chromatography--and nuclear magnetic resonance spectroscopy (HPLC-NMR) remains challenging in the field of structure elucidation. In combination with a highl