TY  - JOUR
A1  - Tippkötter, Nils
A1  - Stückmann, Henning
A1  - Kroll, Stephen
A1  - Winkelmann, Gunda
A1  - Noack, Udo
A1  - Scheper, Thomas
A1  - Ulber, Roland
T1  - A semi-quantitative dipstick assay for microcystin
JF  - Analytical and Bioanalytical Chemistry
N2  - An immunochromatographic lateral flow dipstick assay for the fast detection of microcystin-LR was developed. Colloid gold particles with diameters of 40 nm were used as red-colored antibody labels for the visual detection of the antigen. The new dipstick sensor is capable of detecting down to 5 µg·l−1 (ppb; total inversion of the color signal) or 1 ppb (observation of color grading) of microcystin-LR. The course of the labeling reaction was observed via spectrometric wave shifts caused by the change of particle size during the binding of antibodies. Different stabilizing reagents showed that especially bovine serum albumin (BSA) and casein increase the assays sensitivity and the conjugate stability. Performance of the dipsticks was quantified by pattern processing of capture zone CCD images. Storage stability of dipsticks and conjugate suspensions over 115 days under different conditions were monitored. The ready-to-use dipsticks were successfully tested with microcystin-LR-spiked samples of outdoor drinking- and salt water and applied to the tissue of microcystin-fed mussels.
Y1  - 2009
U6  - https://doi.org/10.1007/s00216-009-2750-8
SN  - 1618-2650
VL  - 394
IS  - 3
SP  - 863
EP  - 869
PB  - springer
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Henderson, Colin J.
A1  - Wolf, C. Roland
A1  - Scheer, Nico
ED  - Woolf, Thomas F.
T1  - The use of transgenic animals to study drug metabolism
T2  - Handbook of Drug Metabolism. 2nd Edition
Y1  - 2009
SN  - 978-1-4200-7647-9
SP  - 637
EP  - 658
PB  - Informa Healthcare
CY  - New York
ER  - 
TY  - JOUR
A1  - Henderson, Colin J.
A1  - Scheer, Nico
A1  - Wolf, C. Roland
T1  - Advances in the generation of mouse models to elucidate the pathways of drug metabolism in rodents and man
JF  - Expert Review of Clinical Pharmacology
Y1  - 2009
U6  - https://doi.org/10.1586/17512433.2.2.105
SN  - 1751-2441
VL  - 2
IS  - 2
SP  - 105
EP  - 109
PB  - Taylor & Francis
CY  - London
ER  - 
TY  - JOUR
A1  - Stanley, Lesley A.
A1  - Horsburgh, Brian C.
A1  - Ross, Jillian
A1  - Scheer, Nico
A1  - Wolf, C. Roland
T1  - Drug transporters: Gatekeepers controlling access of xenobiotics to the cellular interior
JF  - Drug Metabolism Reviews
Y1  - 2009
U6  - https://doi.org/10.1080/03602530802605040
SN  - 1097-9883
VL  - 41
IS  - 1
SP  - 27
EP  - 65
PB  - Taylor & Francis
CY  - London
ER  - 
TY  - JOUR
A1  - Bäcker, Matthias
A1  - Beging, Stefan
A1  - Biselli, Manfred
A1  - Poghossian, Arshak
A1  - Wang, J.
A1  - Zang, Werner
A1  - Wagner, Patrick
A1  - Schöning, Michael Josef
T1  - Concept for a solid-state multi-parameter sensor system for cell-culture monitoring
JF  - Electrochimica Acta. 54 (2009), H. 25 Sp. Iss. SI
Y1  - 2009
SN  - 0013-4686
SP  - 6107
EP  - 6112
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Selmer, Thorsten
A1  - Pinkenburg, Olaf
T1  - Method of cloning at least one nucleic acid molecule of interest using type IIS restriction endonucleases, and corresponding cloning vectors, kits and system using type IIS restriction endonucleases / Selmer, Thorsten ; Pinkenburg, Olaf
Y1  - 2008
N1  - Patent No. WO 2008095927  	A1  	Aug 14, 2008
ER  - 
TY  - JOUR
A1  - Jeromin, Günter Erich
A1  - Zoor, Annegreth
T1  - A new irreversible enzyme-aided esterification method in organic solvents
JF  - Biotechnology letters. 30 (2008), H. 5
Y1  - 2008
SN  - 1573-6776
SP  - 925
EP  - 928
ER  - 
TY  - JOUR
A1  - Herold, Marco J.
A1  - Brandt, Jens van den
A1  - Seibler, Jost
A1  - Reichardt, Holger M.
T1  - Inducible and reversible gene silencing by stable integration of an shRNA-encoding lentivirus in transgenic rats
JF  - Proceedings of the National Academy of Sciences of the United States of America
Y1  - 2008
U6  - https://doi.org/10.1073/pnas.0806213105
SN  - 1091-6490
VL  - 105
IS  - 47
SP  - 18507
EP  - 18512
ER  - 
TY  - JOUR
A1  - Koch, Linda
A1  - Wunderlich, F. Thomas
A1  - Seibler, Jost
A1  - Könner, A. Christine
A1  - Hampel, Brigitte
A1  - Irlenbusch, Sigrid
A1  - Brabant, Georg
A1  - Kahn, C. Ronald
A1  - Schwenk, Frieder
A1  - Brüning, Jens C.
T1  - Central insulin action regulates peripheral glucose and fat metabolism in mice
JF  - The Journal of Clinical Investigation (JCI)
Y1  - 2008
U6  - https://doi.org/10.1172/JCI31073
SN  - 1558-8238
VL  - 118
IS  - 6
SP  - 2132
EP  - 2147
ER  - 
TY  - JOUR
A1  - Christoph, Thomas
A1  - Bahrenberg, Gregor
A1  - Vry, Jean de
A1  - Englberger, Werner
A1  - Erdmann, Volker A.
A1  - Frech, Moritz
A1  - Kögel, Babette
A1  - Röhl, Thomas
A1  - Schiene, Klaus
A1  - Schröder, Wolfgang
A1  - Seibler, Jost
A1  - Kurreck, Jens
T1  - Investigation of TRPV1 loss-of-function phenotypes in transgenic shRNA expressing and knockout mice
JF  - Molecular and Cellular Neuroscience
Y1  - 2008
U6  - https://doi.org/10.1016/j.mcn.2007.12.006
SN  - 1044-7431
VL  - 37
IS  - 3
SP  - 579
EP  - 589
ER  - 
TY  - JOUR
A1  - Scheer, Nico
A1  - Ross, Jillian
A1  - Rode, Anja
A1  - Zevnik, Branko
A1  - Niehaves, Sandra
A1  - Faust, Nicole
A1  - Wolf, C. Roland
T1  - A novel panel of mouse models to evaluate the role of human pregnane X receptor and constitutive androstane receptor in drug response
JF  - Journal of Clinical Investigation
Y1  - 2008
U6  - https://doi.org/https://doi.org/10.1172/JCI35483
SN  - 1558-8238
VL  - 118
IS  - 9
SP  - 3228
EP  - 3239
ER  - 
TY  - JOUR
A1  - Tippkötter, Nils
A1  - Roikaew, W.
A1  - Ulber, Roland
T1  - Nitrate removal from whey concentrate with biotechnological regeneration of the waste water
JF  - European dairy magazine : EDM
Y1  - 2008
SN  - 0936-6318
IS  - 1
SP  - 30
EP  - 32
ER  - 
TY  - JOUR
A1  - Tippkötter, Nils
A1  - Deterding, A.
A1  - Ulber, Roland
T1  - Determination of acetic acid in fermentation broth by gas-diffusion technique
JF  - Engineering in Life Sciences
N2  - Due to the interfering effects of acetic acid in many fermentation processes, a gas-diffusion technique was developed for the online determination of acetic acid. The measurements were accomplished with a flow diffusion analysis (FDA) unit from the TRACE Analytics GmbH, Braunschweig, Germany. The diffusion analysis is based on the UV-absorbance of acetic acid at 205 nm. The measurement was achieved by the separation of an acceptor and a carrier stream (acidified fermentation broth) using a gas permeable polytetrafluoroethylene (PTFE) membrane, whereby broth constituents that would otherwise disturb the UV-measurement of acetic acid, are held back efficiently. Merely, the fermentation by-products, e.g. formic acid, is capable of diffusing through the membrane. While formic acid can disturb the measurement, carbon dioxide does not absorb at 205 nm. The method operates with time-dependent sample enrichment. During the analysis, a small volume of the acceptor stream is stopped for a defined time interval in the acceptor chamber. During this period, the gaseous acetic acid diffuses through the membrane and is enriched in the acceptor chamber. Subsequently after the enrichment, the acceptor stream flows through a UV-detector. The intensity of the signal is proportional to the acetic acid concentration. Online measurements in bioreactors via a sterile filtration probe have been accomplished. A linear calibration in the range of 0.5–5.0 g/L acetic acid with a relative standard deviation of <5 % was obtained. A sampling rate of 8 samples per hour was possible. The system was applied for the determination of acetic acid in E. coli fermentation broth. The instrument is easy to clean, very user-friendly and does not require any toxic or expensive reagents.
Y1  - 2008
U6  - https://doi.org/10.1002/elsc.200820227
VL  - 8
IS  - 1, Special Issue: Technical Systems for the Use in Life Sciences
SP  - 62
EP  - 67
ER  - 
TY  - CHAP
A1  - Tippkötter, Nils
A1  - Roikaew, W.
A1  - Ulber, Roland
T1  - An automated pilot plant for the bioengineering processing of concentrated whey
T2  - European BioPerspectives : in cooperation with BIOTECHNICA 2008 : 7 - 9 October 2008 Hannover, Germany ; book of abstracts ; abstracts, poster programme
Y1  - 2008
SP  - 98
PB  - Dechema
CY  - Frankfurt am Main
ER  - 
TY  - JOUR
A1  - Wagner, Torsten
A1  - Molina, R.
A1  - Biselli, Manfred
A1  - Canzoneri, Michele
A1  - Schnitzler, Thomas
A1  - Yoshinobu, Tatsuo
A1  - Schöning, Michael Josef
T1  - A light-addressable potentiometric sensor system for fast, simultaneous and spatial detection of the metabolic activity of biological cells
JF  - Transducers '07 Eurosensors XXI : digest of technical papers ; the14th International Conference on Solid-State Sensors, Actuators and Microsystems, June 10-14, 2007, Lyon, France / Gilles Delapierre (Ed.)
Y1  - 2007
SN  - 1-4244-0841-5
N1  - Eurosensors 21, 2007, Lyon ; International Conference on Solid-State Sensors, Actuators and Microsystems 14, 2007, Lyon
SP  - 1107
EP  - 1110
PB  - IEEE
CY  - Piscataway
ER  - 
TY  - JOUR
A1  - Turek, Monika
A1  - Ketterer, Lothar
A1  - Claßen, Melanie
A1  - Berndt, Heinz
A1  - Elbers, Gereon
A1  - Krüger, Peter
A1  - Keusgen, Michael
A1  - Schöning, Michael Josef
T1  - Development and Electrochemical Investigations of an EIS-(Electrolyte-Insulator-Semiconductor) based Biosensor for Cyanide Detection
JF  - Sensors
Y1  - 2007
SN  - 1424-8220
VL  - 7
IS  - 8
SP  - 1415
EP  - 1426
ER  - 
TY  - JOUR
A1  - Wagner, Torsten
A1  - Molina, Roberto
A1  - Yoshinobu, Tatsuo
A1  - Kloock, Joachim P.
A1  - Biselli, Manfred
A1  - Canzoneri, Michele
A1  - Schnitzler, Thomas
A1  - Schöning, Michael Josef
T1  - Handheld multi-channel LAPS device as a transducer platform for possible biological and chemical multi-sensor applications
JF  - Electrochimica Acta. 53 (2007), H. 2
Y1  - 2007
SN  - 0013-4686
SP  - 305
EP  - 311
ER  - 
TY  - JOUR
A1  - Mang, Thomas
A1  - Kolz, J.
A1  - Hunger, K.
A1  - Rath, S.
T1  - Investigation of self-diffusion processes in ionic hydrogels with a single-sided sensor / Kolz, J. ; Hunger, K. ; Rath, S. ; Mang, T. ;  Blümich, B.
JF  - Magnetic Resonance Imaging. 25 (2007), H. 4
Y1  - 2007
SN  - 0730-725X
N1  - Proceedings of the Eighth International Bologna Conference on Magnetic Resonance in Porous Media
SP  - 566
EP  - 567
ER  - 
TY  - JOUR
A1  - Mang, Thomas
A1  - Kolz, J.
A1  - Goga, N.
A1  - Casanova, F.
T1  - Spatial localization with single-sided NMR sensors / Kolz, J. ; Goga, N. ; Casanova, F. ; Mang, T. ; Blümich, B.
JF  - Applied Magnetic Resonance. 32 (2007), H. 1-2
Y1  - 2007
SN  - 0937-9347
SP  - 171
EP  - 184
ER  - 
TY  - JOUR
A1  - Biselli, Manfred
A1  - Rechmann, Hanrik
A1  - Friedrich, Andrea
A1  - Forouzan, Dara
T1  - Characterization of photosynthetically active duckweed ( Wolffia australiana ) in vitro culture by Respiration Activity Monitoring System (RAMOS) / Henrik Rechmann, Andrea Friedrich, Dara Forouzan, Stefan Barth, Heide Schnabl, Manfred Biselli und Robert B
JF  - Biotechnology Letters. 29 (2007), H. 6
Y1  - 2007
SN  - 0141-5492
SP  - 971
EP  - 977
ER  -