TY  - JOUR
A1  - Aboulnaga, E. H.
A1  - Pinkenburg, O.
A1  - Schiffels, Johannes
A1  - El-Refai, A.
A1  - Buckel, W.
A1  - Selmer, Thorsten
T1  - Butyrate production in Escherichia coli: Exploitation of an oxygen tolerant bifurcating butyryl-CoA dehydrogenase/electron transferring flavoprotein complex from Clostridium difficile
JF  - Journal of bacteriology. June 14, 2013
Y1  - 2013
SN  - 1098-5530 (E-Journal) ; 0021-9193 (Print)
SP  - Epub ahead of print
ER  - 
TY  - JOUR
A1  - Winckler, Silvia
A1  - Krueger, Rolf
A1  - Schnitzler, Thomas
A1  - Zang, Werner
A1  - Fischer, Rainer
A1  - Biselli, Manfred
T1  - A sensitive monitoring system for mammalian cell cultivation processes: a PAT approach
JF  - Bioprocess and biosystems engineering
N2  - Biopharmaceuticals such as antibodies are produced in cultivated mammalian cells, which must be monitored to comply with good manufacturing practice. We, therefore, developed a fully automated system comprising a specific exhaust gas analyzer, inline analytics and a corresponding algorithm to precisely determine the oxygen uptake rate, carbon dioxide evolution rate, carbon dioxide transfer rate, transfer quotient and respiratory quotient without interrupting the ongoing cultivation, in order to assess its reproducibility. The system was verified using chemical simulation experiments and was able to measure the respiratory activity of hybridoma cells and DG44 cells (derived from Chinese hamster ovary cells) with satisfactory results at a minimum viable cell density of ~2.0 × 10⁵ cells ml⁻¹. The system was suitable for both batch and fed-batch cultivations in bubble-aerated and membrane-aerated reactors, with and without the control of pH and dissolved oxygen.
Y1  - 2014
U6  - http://dx.doi.org/10.1007/s00449-013-1062-8
SN  - 1615-7591 (Print) 1615-7605 (Online)
VL  - 37
IS  - 5
SP  - 901
EP  - 912
PB  - Springer
CY  - Berlin, Heidelberg
ER  - 
TY  - JOUR
A1  - Meyer-Stork, L. Sebastian
A1  - Höcker, Hartwig
A1  - Berndt, Heinz
T1  - Syntheses and reactions of urethanes of cellobiose and cellulose-containing uretdione groups
JF  - Journal of applied polymer science
Y1  - 1992
SN  - 1097-4628
VL  - 44
IS  - 6
SP  - 1043
EP  - 1049
ER  - 
TY  - JOUR
A1  - Schnitzler, Thomas
T1  - Cultivation of hybridoma cell line CF-10H5 (DSMZ ACC477)
JF  - Application notes / Sartorius stedim biotech
Y1  - 2009
SP  - 1
EP  - 4
ER  - 
TY  - JOUR
A1  - Schnitzler, Thomas
T1  - Kultivierung der Hybridomazelllinie CF-10H5 (DSMZ ACC477)
JF  - Application notes / Sartorius stedim biotech
Y1  - 2009
PB  - Sartorius Stedim Biotec
CY  - Aubagne
ER  - 
TY  - JOUR
A1  - Schnitzler, Thomas
A1  - Biselli, Manfred
T1  - Cultivo de lineas celulares de hibridoma por CF-10H5 (DSMZ ACC477) en el BIOSTAT B plus
JF  - Noticias tecnicas del laboratorio
Y1  - 2005
VL  - 13
IS  - 3
SP  - 7
EP  - 8
ER  - 
TY  - JOUR
A1  - Hemmerling, H.-J.
A1  - Merschenz-Quack, Angelika
A1  - Wunderlich, H.
T1  - Crystal structures of indeno[1,2-d]imidazoles. XIth European Crystallographic Meeting, Vienna 1988
JF  - Zeitschrift für Kristallographie - Crystalline Materials
Y1  - 1988
SN  - 2196-7105 (E-Books); 2194-4946 (Print)
VL  - 185
IS  - H. 1-4
SP  - 256
ER  - 
TY  - JOUR
A1  - Mootz, D.
A1  - Merschenz-Quack, Angelika
T1  - Zur Kenntnis der höchsten Hydrate der Schwefelsäure: Bildung und Struktur von H2SO4·6,5 H2O und H2SO4·8H2O
JF  - Zeitschrift für Naturforschung B: Journal of chemical sciences
Y1  - 1987
SN  - 1865-7117 (E-Journal); 0932-0776 (Print)
VL  - 42
IS  - H. 10
SP  - 1231
EP  - 1236
ER  - 
TY  - JOUR
A1  - Merschenz-Quack, Angelika
T1  - Betriebsanweisungen beim Umgang mit Gefahrstoffen
JF  - Elektro-Praktiker : Fachzeitschrift für Handwerk und Industrie
Y1  - 1991
SN  - 0013-5569
VL  - Bd. 45
IS  - H. 10
SP  - 644
EP  - 649
ER  - 
TY  - JOUR
A1  - Gerigk, M.
A1  - Maaß, D.
A1  - Takors, Ralf
A1  - Kreutzer, A.
A1  - Wandrey, Christian
A1  - Bongaerts, Johannes
A1  - Wubbolts, Marcel
T1  - Fermentative Herstellung von L-Phenylalanin im Fed-Batch Verfahren mit E. coli unter Einbindung eines integrierten Aufarbeitungsverfahrens
JF  - Chemie-Ingenieur-Technik (CIT)
Y1  - 2000
SN  - 1522-2640 (E-Journal); 0009-286X (Print)
N1  - Printausg. in der Bibliothek vorhanden: 63 ZS 022
VL  - Vol. 72
IS  - Iss. 9
SP  - 926
EP  - 927
ER  - 
TY  - JOUR
A1  - Müller, Ulrike
A1  - Bongaerts, Johannes
A1  - Bovenberg, Roel
A1  - Jossek, Ralf
A1  - Krämer, Marco
A1  - Linnemann, J.
A1  - Müschen, S.
A1  - Ritterbecks, S.
A1  - Sprenger, G.
A1  - Wubbolts, Marcel
T1  - Metabolic engineering to produce fine chemicals in Escherichia coli
JF  - Mededelingen van de Faculteit Landbouwwetenschappen, Rijksuniversiteit Gent
Y1  - 2001
SN  - 0035-533x
VL  - 66 (3a)
SP  - 215
EP  - 217
ER  - 
TY  - JOUR
A1  - Jossek, Ralf
A1  - Bongaerts, Johannes
A1  - Sprenger, Georg A.
T1  - Characterization of a new feedback-resistant 3-deoxy-D-arabinoheptulosonate 7-phosphate synthase AroF of Escherichia coli
JF  - FEMS microbiology letters
Y1  - 2001
SN  - 1574-6968
VL  - Vol. 202
IS  - Iss. 1
SP  - 145
EP  - 148
ER  - 
TY  - JOUR
A1  - Bongaerts, Johannes
A1  - Krämer, Marco
A1  - Müller, Ulrike
A1  - Raeven, Leon
A1  - Wubbolts, Marcel
T1  - Metabolic engineering for microbial production of aromatic amino acids and derived compounds
JF  - Metabolic engineering
Y1  - 2001
SN  - 1096-7184 (E-Journal); 1096-7176 (Print)
VL  - Vol. 3
IS  - Iss. 4
SP  - 289
EP  - 300
ER  - 
TY  - JOUR
A1  - Schmitz, M.
A1  - Hirsch, E.
A1  - Bongaerts, Johannes
A1  - Takors, Ralf
T1  - Pulse experiments as a prerequisite for the quantification of in vivo enzyme kinetics in aromatic amino acid pathway of Eschericia coli
JF  - Biotechnology progress
Y1  - 2002
SN  - 1520-6033 (E-Journal); 8756-7938 (Print)
VL  - Vol. 18
IS  - Iss. 5
SP  - 935
EP  - 941
ER  - 
TY  - JOUR
A1  - Bongaerts, Johannes
A1  - Bovenberg, Roel
A1  - Krämer, Marco
A1  - Müller, Ulrike
A1  - Raeven, Leon
A1  - Wubbolts, Marcel
T1  - Metabolic engineering to produce fine chemicals in Escherichia coli
JF  - Chemie - Ingenieur - Technik (CIT)
Y1  - 2002
SN  - 1522-2640 (E-Journal); 0009-286X (Print)
N1  - Printausg. in der Bibliothek vorhanden: 63 ZS 022
VL  - Vol. 74
IS  - Iss. 5
SP  - 694
ER  - 
TY  - JOUR
A1  - Gerigk, M.
A1  - Bujnicki, R.
A1  - Ganpo-Nkwenkwa, E.
A1  - Bongaerts, Johannes
A1  - Sprenger, G.
A1  - Takors, Ralf
T1  - Process control for enhanced L-phenylalanine production using different recombinant Escherichia coli strains
JF  - Biotechnology and bioengineering
Y1  - 2002
SN  - 1097-0290 (E-Journal); 0006-3592 (Print)
VL  - Vol. 80
IS  - Iss. 7
SP  - 746
EP  - 754
ER  - 
TY  - JOUR
A1  - Gerigk, M.
A1  - Maaß, D.
A1  - Kreutzer, A.
A1  - Sprenger, G.
A1  - Bongaerts, Johannes
A1  - Wubbolts, Marcel
A1  - Takors, Ralf
T1  - Enhanced pilot-scale fed-batch L-phenylalanine production with recombinant Escherichia coli by fully integrated reactive extraction
JF  - Bioprocess and biosystems engineering
Y1  - 2002
SN  - 1432-0797 (E-Journal); 1615-7605 (E-Journal); 0178-515X (Print); 1615-7591 (Print)
VL  - Vol. 25
IS  - Iss. 1
SP  - 43
EP  - 52
ER  - 
TY  - JOUR
A1  - Krämer, Marco
A1  - Bongaerts, Johannes
A1  - Bovenberg, Roel
A1  - Kremer, Susanne
A1  - Müller, Ulrike
A1  - Orf, Sonja
A1  - Wubbolts, Marcel
A1  - Raeven, Leon
T1  - Metabolic engineering for microbial production of shikimic acid
JF  - Metabolic engineering
Y1  - 2003
SN  - 1096-7184 (E-Journal); 1096-7176 (Print)
VL  - Vol. 5
IS  - Iss. 4
SP  - 277
EP  - 283
ER  - 
TY  - JOUR
A1  - Polen, T.
A1  - Krämer, Marco
A1  - Bongaerts, Johannes
A1  - Wubbolts, Marcel
A1  - Wendisch, V. F.
T1  - The global gene expression response of Escherichia coli to L-phenylalanine
JF  - Journal of biotechnology
Y1  - 2005
SN  - 1873-4863 (E-Journal); 0168-1656 (Print)
VL  - Vol. 115
IS  - Iss. 3
SP  - 221
EP  - 237
ER  - 
TY  - JOUR
A1  - Unden, G.
A1  - Becker, S.
A1  - Bongaerts, Johannes
A1  - Schirawski, J.
A1  - Six, S.
T1  - Oxygen regulated gene expression in facultatively anaerobic bacteria
JF  - Antonie van Leeuwenhoek
Y1  - 1994
SN  - 0003-6072 (Print) ; 1572-9699 (online)
VL  - Vol. 66
IS  - Iss. 1-3
SP  - 3
EP  - 22
ER  - 
TY  - JOUR
A1  - Bongaerts, Johannes
A1  - Zoschke, Sascha
A1  - Weidner, Uwe
A1  - Linden, Gottfried
T1  - Transcriptional regulation of the proton translocating NADH
JF  - Molecular microbiology
Y1  - 1995
SN  - 1365-2958 (E-Journal); 0950-382x (Print)
VL  - Vol. 16
IS  - Iss. 3
SP  - 521
EP  - 534
ER  - 
TY  - JOUR
A1  - Unden, G.
A1  - Becker, S.
A1  - Bongaerts, Johannes
A1  - Holighaus, G.
A1  - Schirawski, J.
A1  - Six, S.
T1  - O2-sensing and O2-dependent gene regulation in facultatively anaerobic bacteria
JF  - Archives of microbiology
Y1  - 1995
SN  - 1432-072X (E-Journal); 0003-9276 (Print); 0302-8933 (Print)
VL  - Vol. 164
IS  - Iss. 2
SP  - 81
EP  - 90
ER  - 
TY  - JOUR
A1  - Wissenbach, U.
A1  - Six, S.
A1  - Bongaerts, Johannes
A1  - Ternes, D.
A1  - Steinwachs, S.
A1  - Unden, G.
T1  - A third periplasmic transport system for l-arginine in Escherichia coli: molecular characterization of the artPIQMJ genes, arginine binding and transport
JF  - Molecular microbiology
Y1  - 1995
SN  - 1365-2958 (E-Journal); 0950-382x (Print)
VL  - Vol. 17
IS  - Iss. 4
SP  - 675
EP  - 686
ER  - 
TY  - JOUR
A1  - Tran, Quang Hon
A1  - Bongaerts, Johannes
A1  - Vlad, Dorina
A1  - Unden, Gottfried
T1  - Requirement for the proton-pumping NADH dehydrogenase I of Escherichia coli in respiration of NADH to fumarate and its bioenergetic implications
JF  - European journal of biochemistry
Y1  - 1997
SN  - 0014-2956
VL  - Vol. 244
IS  - Iss. 1
SP  - 155
EP  - 160
ER  - 
TY  - JOUR
A1  - Unden, Gottfried
A1  - Bongaerts, Johannes
T1  - Alternative respiratory pathways of Escherichia coli: energetics and transcriptional regulation in response to electron acceptors
JF  - Biochimica et biophysica acta (BBA) - Bioenergetics
Y1  - 1997
SN  - 1879-2650 (E-Journal); 0005-2728 (Print)
VL  - Vol. 1320
IS  - Iss. 3
SP  - 217
EP  - 234
ER  - 
TY  - JOUR
A1  - Zientz, Evelyn
A1  - Bongaerts, Johannes
A1  - Unden, Gottfried
T1  - Fumarate regulation of gene expression in Escherichia coli by the DcuSR (dcuSR genes) two-component regulatory system
JF  - Journal of bacteriology
Y1  - 1998
SN  - 1098-5530 (E-Journal); 0021-9193 (Print)
VL  - Vol. 180
IS  - No. 20
SP  - 5421
EP  - 5425
ER  - 
TY  - JOUR
A1  - Wackwitz, B.
A1  - Bongaerts, Johannes
A1  - Goodman, S. D.
A1  - Unden, Gottfried
T1  - Growth phase-dependent regulation of nuoA-N expression in Escherichia coli K-12 by the Fis protein: upstream binding sites and bioenergetic significance
JF  - Molecular and general genetics : MGG
Y1  - 1999
SN  - 1617-4623 (E-Journal); 1617-4615 (Print)
VL  - Vol. 262
IS  - Iss. 4 - 5
SP  - 876
EP  - 883
ER  - 
TY  - JOUR
A1  - Scheele, S.
A1  - Bongaerts, Johannes
A1  - Maurer, K.-H.
A1  - Freudl, R.
T1  - Sekretion einer Kofaktor-haltigen Oxidase durch Corynebacterium glutamicum
JF  - Chemie - Ingenieur - Technik (CIT)
Y1  - 2009
SN  - 1522-2640 (E-Journal); 0009-286X (Print)
VL  - Vol. 81
IS  - Iss. 8
SP  - 1309
ER  - 
TY  - JOUR
A1  - Deppe, Veronika Maria
A1  - Bongaerts, Johannes
A1  - O'Connell, Timothy
A1  - Maurer, Karl-Heinz
A1  - Meinhardt, Friedhelm
T1  - Enzymatic deglycation of Amadori products in bacteria
JF  - Applied microbiology and biotechnology
Y1  - 2011
SN  - 1432-0614 (E-Journal); 0171-1741 (Print); 0175-7598 (Print); 0340-2118 (Print)
VL  - Vol. 90
IS  - Iss. 2
SP  - 399
EP  - 406
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Deppe, Veronika Maria
A1  - Klatte, Stephanie
A1  - Bongaerts, Johannes
A1  - Maurer, Karl-Heinz
A1  - O'Connell, Timothy
A1  - Meinhardt, Friedhelm
T1  - Genetic control of Amadori product degradation in Bacillus subtilis via regulation of frlBONMD expression by FrlR
JF  - Applied and environmental microbiology
Y1  - 2011
SN  - 1098-5336 (E-Journal); 0003-6919 (Print); 0099-2240 (Print)
VL  - Vol. 77
IS  - No. 9
SP  - 2839
EP  - 2846
PB  - American Society of Mechanical Engineers (ASME)
CY  - New York
ER  - 
TY  - JOUR
A1  - Bongaerts, Johannes
A1  - Esser, Simon
A1  - Lorbach, Volker
A1  - Al-Momani, Lóay
A1  - Müller, Michael A.
A1  - Franke, Dirk
A1  - Grondal, Christoph
A1  - Kurutsch, Anja
A1  - Bujnicki, Robert
A1  - Takors, Ralf
A1  - Raeven, Leon
A1  - Wubbolts, Marcel
A1  - Bovenberg, Roel
A1  - Nieger, Martin
A1  - Schürmann, Melanie
A1  - Trachtmann, Natalie
A1  - Kozak, Stefan
A1  - Sprenger, Georg A.
A1  - Müller, Michael
T1  - Diversity-oriented production of metabolites derived from chorismate and their use in organic synthesis
JF  - Angewandte Chemie International Edition
Y1  - 2011
SN  - 1521-3773 (E-Journal); 0570-0833 (Print); 1433-7851 (Print)
VL  - Vol. 50
IS  - Iss. 34
SP  - 7781
EP  - 7786
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Borgmeier, Claudia
A1  - Bongaerts, Johannes
A1  - Meinhardt, Friedhelm
T1  - Genetic analysis of the Bacillus licheniformis degSU operon and the impact of regulatory mutations on protease production
JF  - Journal of biotechnology
N2  - Disruption experiments targeted at the Bacillus licheniformis degSU operon and GFP-reporter analysis provided evidence for promoter activity immediately upstream of degU. pMutin mediated concomitant introduction of the degU32 allele – known to cause hypersecretion in Bacillus subtilis – resulted in a marked increase in protease activity. Application of 5-fluorouracil based counterselection through establishment of a phosphoribosyltransferase deficient Δupp strain eventually facilitated the marker-free introduction of degU32 leading to further protease enhancement achieving levels as for hypersecreting wild strains in which degU was overexpressed. Surprisingly, deletion of rapG – known to interfere with DegU DNA-binding in B. subtilis – did not enhance protease production neither in the wild type nor in the degU32 strain. The combination of degU32 and Δupp counterselection in the type strain is not only equally effective as in hypersecreting wild strains with respect to protease production but furthermore facilitates genetic strain improvement aiming at biological containment and effectiveness of biotechnological processes.
KW  - Marker-free mutagenesis
KW  - Extracellular enzymes
KW  - Uracil-phosphoribosyltransferase
KW  - Hypersecretion
Y1  - 2012
U6  - http://dx.doi.org/10.1016/j.jbiotec.2012.02.011
SN  - 1873-4863 (E-Journal); 0168-1656 (Print)
VL  - 159
IS  - 1-2
SP  - 12
EP  - 20
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Scheele, Sandra
A1  - Oertel, Dan
A1  - Bongaerts, Johannes
A1  - Evers, Stefan
A1  - Hellmuth, Hendrik
A1  - Maurer, Karl-Heinz
A1  - Bott, Michael
A1  - Freudl, Roland
T1  - Secretory production of an FAD cofactor-containing cytosolic enzyme (sorbitol–xylitol oxidase from Streptomyces coelicolor) using the twin-arginine translocation (Tat) pathway of Corynebacterium glutamicum
JF  - Microbial biotechnology
Y1  - 2013
SN  - 1751-7915
SP  - 202
EP  - 206
PB  - Wiley-Blackwell
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Wilming, Anja
A1  - Begemann, Jens
A1  - Kuhne, Stefan
A1  - Regestein, Lars
A1  - Bongaerts, Johannes
A1  - Evers, Stefan
A1  - Maurer, Karl-Heinz
A1  - Büchs, Jochen
T1  - Metabolic studies of γ-polyglutamic acid production in Bacillus licheniformis by small-scale continuous cultivations
JF  - Biochemical engineering journal
Y1  - 2013
SN  - 1873-295X (E-Journal); 1369-703X (Print)
VL  - Vol. 73
SP  - 29
EP  - 37
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Voigt, Birgit
A1  - Schroeter, Rebecca
A1  - Jürgen, Britta
A1  - Albrecht, Dirk
A1  - Evers, Stefan
A1  - Bongaerts, Johannes
A1  - Maurer, Karl-Heinz
A1  - Schweder, Thomas
A1  - Hecker, Michael
T1  - The response of Bacillus licheniformis to heat and ethanol stress and the role of the SigB regulon
JF  - Proteomics
Y1  - 2013
SN  - 1615-9861 (E-Journal); 1615-9853 (Print)
VL  - Vol. 13
IS  - Iss. 14
SP  - 2140
EP  - 2146
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Rachinger, Michael
A1  - Bauch, Melanie
A1  - Strittmatter, Axel
A1  - Bongaerts, Johannes
A1  - Evers, Stefan
A1  - Maurer, Karl-Heinz
A1  - Daniel, Rolf
A1  - Liebl, Wolfgang
A1  - Liesegang, Heiko
A1  - Ehrenreich, Armin
T1  - Size unlimited markerless deletions by a transconjugative plasmid-system in Bacillus licheniformis
JF  - Journal of biotechnology
Y1  - 2013
SN  - 1873-4863 (E-Journal); 0168-1656 (Print)
VL  - Vol. 164
IS  - Iss. 4
SP  - 365
EP  - 369
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Wiegand, Sandra
A1  - Dietrich, Sascha
A1  - Hertel, Robert
A1  - Bongaerts, Johannes
A1  - Evers, Stefan
A1  - Volland, Sonja
A1  - Daniel, Rolf
A1  - Liesegang, Heiko
T1  - RNA-Seq of Bacillus licheniformis: active regulatory RNA features expressed within a productive fermentation
JF  - BMC genomics
Y1  - 2013
SN  - 1471-2164
VL  - Vol. 14
SP  - 667
PB  - BioMed Central
CY  - London
ER  - 
TY  - JOUR
A1  - Kalbe, Jochen
A1  - Höcker, Hartwig
A1  - Berndt, Heinz
T1  - Design of enzyme reactors as chromatographic columns for racemic resolution of amino acid esters
JF  - Chromatographia
Y1  - 1989
SN  - 0009-5893
U6  - http://dx.doi.org/10.1007/BF02319646
VL  - 28
IS  - 3-4
SP  - 193
EP  - 196
ER  - 
TY  - JOUR
A1  - Kuropka, Rolf
A1  - Müller, Bettina
A1  - Höcker, Hartwig
A1  - Berndt, Heinz
T1  - Chiral stationary phases via hydrosilylation reaction of N-acryloylamino acids : I. Stationary phase with one chiral centre for high-performance liquid chromatography and development of a new derivatization pattern for amino acid enantiomers
JF  - Journal of chromatography A
Y1  - 1989
SN  - 0021-9673
IS  - 481
SP  - 380
EP  - 386
ER  - 
TY  - JOUR
A1  - Kalbe, Jochen
A1  - Kuropka, Rolf
A1  - Meyer-Stork, L. Sebastian
A1  - Berndt, Heinz
A1  - [u.a.], 
T1  - Isolation and characterization of high-molecular mass DNA from hair shafts
JF  - Biological chemistry
Y1  - 1988
SN  - 0177-3593
U6  - http://dx.doi.org/10.1515/bchm3.1988.369.1.413
VL  - 369
IS  - 1
SP  - 413
EP  - 416
ER  - 
TY  - JOUR
A1  - Heinze, Daniel
A1  - Mang, Thomas
A1  - Peter, Karin
A1  - Möller, Martin
A1  - Weichold, Oliver
T1  - Synthesis of low molecular weight poly(vinyl acetate) and its application as plasticizer
JF  - Journal of applied polymer science
N2  - Poly(vinyl acetate), PVAc, with a degree of polymerization Xn = 10 was prepared by chain-transfer radical polymerization using carbon tetrachloride and used as oligomeric plasticizer for commercial PVAc. However, the chlorinated chain ends cause a low thermal stability requiring mild Cl/H substitution. The product exhibits high thermal stability and excellent melt-compounding properties. Blends of oligomeric and commercial PVAc show single glass transition temperatures which decrease with higher oligomer content and exhibit small negative deviations from Fox' linear additivity rule. This indicates plasticization and miscibility being mainly due to entropic effects. Injection-moulded thick specimens show ductile behaviour at oligomer contents >10 wt %, while sheets with a thickness of 0.2–0.5 mm appear flexible already at 7.5 wt %. The oxygen permeability coefficients are an order of magnitude lower than those of low-density polyethylene. Due to the sum of their properties, the plasticized sheets present a promising alternative in the preparation of barrier materials.
Y1  - 2014
U6  - http://dx.doi.org/10.1002/app.40226
SN  - 1097-4628 (E-Journal); 0021-8995 (Print)
VL  - 131
IS  - 9
SP  - Article No. 40226
PB  - Wiley
CY  - New York
ER  - 
TY  - JOUR
A1  - Dutta, Suryendu
A1  - Hartkopf-Fröder, Christoph
A1  - Witte, Karin
A1  - Brocke, Rainer
A1  - Mann, Ulrich
T1  - Molecular characterization of fossil palynomorphs by transmission micro-FTIR spectroscopy: implications for hydrocarbon source evaluation
JF  - International journal of coal geology
Y1  - 2013
SN  - 1872-7840 (E-Journal); 0166-5162 (Print)
VL  - Vol. 115
SP  - 13
EP  - 23
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Meyer-Stork, L. Sebastian
A1  - Kalbe, Jochen
A1  - Kuropka, Rolf
A1  - Sauter, S. L.
A1  - Höcker, Hartwig
A1  - Berndt, Heinz
T1  - Eindeutige Provenienzanalyse von Wolle und feinen Tierhaaren mit Hilfe der Erbsubstanz (DNS)
JF  - Textilveredlung : schweizerische Zeitschrift für Textilchemie, Textilveredlung und deren Randgebiete
Y1  - 1988
SN  - 0040-5310
VL  - 23
IS  - 9
SP  - 304
EP  - 307
ER  - 
TY  - JOUR
A1  - Krüger, Götz
A1  - Grötzinger, Joachim
A1  - Berndt, Heinz
T1  - Enantiomeric resolution of amino acid derivatives on chiral stationary phases by high-performance liquid chromatography
JF  - Journal of Chromatography A
Y1  - 1987
U6  - http://dx.doi.org/10.1016/S0021-9673(01)85005-6
SN  - 0021-9673
VL  - 1987
IS  - 397
SP  - 223
EP  - 232
ER  - 
TY  - JOUR
A1  - Berndt, Heinz
A1  - Klostermeyer, Henning
A1  - Zahn, Helmut
T1  - Zur Synthese monomerer cyclischer Cystinpeptidderivate, I : Synthese der Sequenz A 6–9 des Schafinsulins als Cyclocystinylderivat
JF  - Justus Liebigs Annalen der Chemie
N2  - Es wird die Synthese der Sequenz A 6–9 des Schafinsulins in der geschützten Form Boc-Cys-Cys-Ala-Gly-OBuᵗ (5) sowie das Verhalten dieses monomeren cyclischen Cystinpeptidderivates gegenüber den in der Peptidchemie gebräuchlichen Reagenzien Bortrifluorid/Eisessig, Triäthylamin und Hydrazinhydrat beschrieben.
Y1  - 1972
U6  - http://dx.doi.org/10.1002/jlac.19727590109
SN  - 1099-0690
VL  - 759
IS  - 1
SP  - 114
EP  - 120
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Schnabel, Eugen
A1  - Schnabel, Henning
A1  - Berndt, Heinz
T1  - Zur selektiven acidolytischen Abspaltbarkeit der tert.-Butyloxycarbonyl-Gruppe
JF  - Justus Liebigs Annalen der Chemie
N2  - Die tert.-Butyloxycarbonyl-Gruppe (Boc) läßt sich mittels reiner Trifluoressigsäure nicht selektiv neben dem Benzyloxycarbonyl-Rest (Z) abspalten. Das gelingt auch nicht mit Lösungen von Trifluoressigsäure bzw. Chlorwasserstoff in organischen Lösungsmitteln. Kern-substituierte Z-Gruppen wie Z(pCl), Z(mCl) oder Z(pNO₂) sind zwar stabiler, werden aber von den obengenannten Reagenzien ebenfalls angegriffen bzw. sind nicht mehr acidolytisch abspaltbar. – Mit 70proz. wäßriger Trifluoressigsäure gelingt die Abspaltung von Boc neben Z dagegen fast selektiv; dabei werden aber Benzylester, besonders Glutaminsäure-γ-benzylester, teilweise hydrolysiert, während Methyl- sowie Äthylester nahezu beständig sind. Die Brauchbarkeit des Abspaltungsverfahrens wird anhand der schrittweise durchgeführten Synthese zweier Heptapeptid-Derivate gezeigt. – Ähnlich spezifisch gelingt die Abspaltung von Boc mit Bortrifluorid-ätherat in Eisessig; Benzylester sind gegenüber diesem Reagenz stabiler als gegen wäßrige Trifluoressigsäure. Das Bortrifluorid-Verfahren eignet sich besonders für die Abspaltung von Boc-Gruppen neben säurelabilen Thiol-Schutzgruppen (Tetrahydropyranyl- bzw. Trityl-Rest) sowie neben dem Cyclocystinyl-Rest. Die Leistungsfähigkeit der Methode wird durch die Synthese zweier Peptid-Derivate mit S-Trityl-Schutzgruppen belegt. Als Nebenreaktion ist die Acetylierung von aliphatischen Hydroxylgruppen möglich. Sie läßt sich vermeiden, wenn man die Spaltung in anderen Lösungsmitteln durchführt. Die als Modellverbindungen für Stabilitätsuntersuchungen verwendeten Nε-acylierten Lysin-Derivate werden mit dem Aminosäureanalysator quantitativ neben Lysin bestimmt.
Y1  - 1971
U6  - http://dx.doi.org/10.1002/jlac.19717490111
SN  - 1099-0690
VL  - 749
IS  - 1
SP  - 90
EP  - 108
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Nokihara, Kiyoshi
A1  - Berndt, Heinz
T1  - Synthesis of hapten–polypeptide conjugates as antigen models for the N-terminal region of the α-2-chain of rabbit skin collagen
JF  - Journal of the Royal Society of Chemistry: Perkin Transactions 1
N2  - Synthesis of derivatives of the peptide sequence L-pyroglutamyl-L-phenylalanyl-L-aspartyl-glycyl-L-lysyl-glycyl-glycyl-glycine as the antigenic determinant representing the N-terminal non-helical region of the α-2-chain of rabbit skin collagen, and conjugation to two different polypeptide carriers, are described.
Y1  - 1978
U6  - http://dx.doi.org/10.1039/P19780000260
SN  - 1364-5463
SN  - 0300-922X
SN  - 1470-4358
VL  - 1978
IS  - 3
SP  - 260
EP  - 263
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Nokihara, Kiyoshi
A1  - Berndt, Heinz
T1  - Darstellung von Bis(S-methoxycarbonylthio)-B-Kette des Rinderinsulins
JF  - Hoppe-Seyler's Zeitschrift für physiologische Chemie
Y1  - 1979
U6  - http://dx.doi.org/10.1515/bchm2.1979.360.1.773
SN  - 1437-4315
SN  - 0018-4888
VL  - 360
IS  - 1
SP  - 773
EP  - 776
ER  - 
TY  - JOUR
A1  - Berndt, Heinz
T1  - Synthese der Sequenz 71—86 des Humanproinsulins, III : Synthese über die Fragmente 71—78 und 79—86
JF  - Hoppe-Seyler's Zeitschrift für physiologische Chemie
Y1  - 1979
U6  - http://dx.doi.org/10.1515/bchm2.1979.360.1.765
SN  - 1437-4315
SN  - 0018-4888
VL  - 360
IS  - 1
SP  - 765
EP  - 772
ER  - 
TY  - JOUR
A1  - Berndt, Heinz
T1  - Synthese der Sequenz 71—86 des Humanproinsulins, I : Synthese der Sequenz 71—86 als monomeres cyclisches Biscystinpeptidderivat und als Tetra-S-tritylderivat
JF  - Hoppe-Seyler's Zeitschrift für physiologische Chemie
Y1  - 1979
U6  - http://dx.doi.org/10.1515/bchm2.1979.360.1.747
SN  - 1437-4315
SN  - 0018-4888
VL  - 360
IS  - 1
SP  - 747
EP  - 760
ER  -