@article{WiegandVoigtAlbrechtetal.2013, author = {Wiegand, Sandra and Voigt, Birgit and Albrecht, Dirk and Bongaerts, Johannes and Evers, Stefan and Hecker, Michael and Daniel, Rolf and Liesegang, Heiko}, title = {Fermentation stage-dependent adaptations of Bacillus licheniformis during enzyme production}, series = {Microbial Cell Factories}, volume = {12}, journal = {Microbial Cell Factories}, publisher = {Biomed Central}, address = {London}, issn = {1475-2859}, doi = {10.1186/1475-2859-12-120}, pages = {120}, year = {2013}, language = {en} } @article{GebeshuberKornauthDongetal.2013, author = {Gebeshuber, Christoph A. and Kornauth, Christoph and Dong, Lihua and Sierig, Ralph and Seibler, Jost and Reiss, Martina and Tauber, Stefanie and Bilban, Martin and Wang, Shijun and Kain, Renate and B{\"o}hmig, Georg A. and Moeller, Marcus J. and Gr{\"o}ne, Hermann-Josef and Englert, Christoph and Martinez, Javier and Kerjaschki, Dontscho}, title = {Focal segmental glomerulosclerosis is induced by microRNA-193a and its downregulation of WT1}, series = {Nature Medicine}, volume = {19}, journal = {Nature Medicine}, number = {4}, issn = {1078-8956}, doi = {10.1038/nm.3142}, pages = {481 -- 487}, year = {2013}, language = {en} } @article{TippkoetterAlKaidyWollnyetal.2013, author = {Tippk{\"o}tter, Nils and Al-Kaidy, Huschyar and Wollny, Steffen and Ulber, Roland}, title = {Functionalized magnetizable particles for downstream processing in single-use systems}, series = {Chemie Ingenieur Technik}, volume = {85}, journal = {Chemie Ingenieur Technik}, number = {1-2: Special Issue: Single-Use Technology}, publisher = {Wiley}, address = {Weinheim}, doi = {10.1002/cite.201200130}, pages = {76 -- 86}, year = {2013}, abstract = {Biotechnological downstream processing is usually an elaborate procedure, requiring a multitude of unit operations to isolate the target component. Besides the disadvantageous space-time yield, the risks of cross-contaminations and product loss grow fast with the complexity of the isolation procedure. A significant reduction of unit operations can be achieved by application of magnetic particles, especially if these are functionalized with affinity ligands. As magnetic susceptible materials are highly uncommon in biotechnological processes, target binding and selective separation of such particles from fermentation or reactions broths can be done in a single step. Since the magnetizable particles can be produced from iron salts and low priced polymers, a single-use implementation of these systems is highly conceivable. In this article, the principles of magnetizable particles, their synthesis and functionalization are explained. Furthermore, applications in the area of reaction engineering, microfluidics and downstream processing are discussed focusing on established single-use technologies and development potential.}, language = {en} } @article{ScheerSnaithWolfetal.2013, author = {Scheer, Nico and Snaith, Mike and Wolf, C. Roland and Seibler, Jost}, title = {Generation and utility of genetically humanized mouse models}, series = {Drug Discovery Today}, volume = {Vol 18}, journal = {Drug Discovery Today}, number = {23-24}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1359-6446}, doi = {10.1016/j.drudis.2013.07.007}, pages = {1200 -- 1211}, year = {2013}, language = {en} } @article{MartinezJakobTuetal.2013, author = {Martinez, Ronny and Jakob, Felix and Tu, Ran and Siegert, Petra and Maurer, Karl-Heinz and Schwaneberg, Ulrich}, title = {Increasing activity and thermal resistance of Bacillus gibsonii alkaline protease (BgAP) by directed evolution}, series = {Biotechnology and bioengineering}, volume = {Vol. 110}, journal = {Biotechnology and bioengineering}, number = {Iss. 3}, publisher = {Wiley}, address = {Weinheim}, issn = {1097-0290 (E-Journal); 0006-3592 (Print); 0368-1467 (Print)}, pages = {711 -- 720}, year = {2013}, language = {en} } @article{PaulssenLeLengkeeketal.2013, author = {Paulßen, Elisabeth and Le, Van So and Lengkeek, Nigel and Pellegrini, Paul and Jackson, Tim and Greguric, Ivan and Weiner, Ron}, title = {Influence of Metal Ions on the 68Ga-labeling of DOTATATE}, series = {Applied Radiation and Isotopes}, volume = {82}, journal = {Applied Radiation and Isotopes}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1872-9800}, doi = {10.1016/j.apradiso.2013.08.010}, pages = {232 -- 238}, year = {2013}, language = {en} } @article{HuckSchiffelsHerreraetal.2013, author = {Huck, Christina and Schiffels, Johannes and Herrera, Cony N. and Schelden, Maximilian and Selmer, Thorsten and Poghossian, Arshak and Baumann, Marcus and Wagner, Patrick and Sch{\"o}ning, Michael Josef}, title = {Metabolic responses of Escherichia coli upon glucose pulses captured by a capacitive field-effect sensor}, series = {Physica Status Solidi (A)}, volume = {210}, journal = {Physica Status Solidi (A)}, number = {5}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {0031-8965}, doi = {10.1002/pssa.201200900}, pages = {926 -- 931}, year = {2013}, abstract = {Living cells are complex biological systems transforming metabolites taken up from the surrounding medium. Monitoring the responses of such cells to certain substrate concentrations is a challenging task and offers possibilities to gain insight into the vitality of a community influenced by the growth environment. Cell-based sensors represent a promising platform for monitoring the metabolic activity and thus, the "welfare" of relevant organisms. In the present study, metabolic responses of the model bacterium Escherichia coli in suspension, layered onto a capacitive field-effect structure, were examined to pulses of glucose in the concentration range between 0.05 and 2 mM. It was found that acidification of the surrounding medium takes place immediately after glucose addition and follows Michaelis-Menten kinetic behavior as a function of the glucose concentration. In future, the presented setup can, therefore, be used to study substrate specificities on the enzymatic level and may as well be used to perform investigations of more complex metabolic responses. Conclusions and perspectives highlighting this system are discussed.}, language = {en} } @article{WilmingBegemannKuhneetal.2013, author = {Wilming, Anja and Begemann, Jens and Kuhne, Stefan and Regestein, Lars and Bongaerts, Johannes and Evers, Stefan and Maurer, Karl-Heinz and B{\"u}chs, Jochen}, title = {Metabolic studies of γ-polyglutamic acid production in Bacillus licheniformis by small-scale continuous cultivations}, series = {Biochemical engineering journal}, volume = {Vol. 73}, journal = {Biochemical engineering journal}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1873-295X (E-Journal); 1369-703X (Print)}, pages = {29 -- 37}, year = {2013}, language = {en} } @article{DuttaHartkopfFroederWitteetal.2013, author = {Dutta, Suryendu and Hartkopf-Fr{\"o}der, Christoph and Witte, Karin and Brocke, Rainer and Mann, Ulrich}, title = {Molecular characterization of fossil palynomorphs by transmission micro-FTIR spectroscopy: implications for hydrocarbon source evaluation}, series = {International journal of coal geology}, volume = {Vol. 115}, journal = {International journal of coal geology}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1872-7840 (E-Journal); 0166-5162 (Print)}, pages = {13 -- 23}, year = {2013}, language = {en} } @article{ThielTippkoetterSucketal.2013, author = {Thiel, Alexander and Tippk{\"o}tter, Nils and Suck, Kirstin and Sohling, Ulrich and Ruf, Friedrich and Ulber, Roland}, title = {New zeolite adsorbents for downstream processing of polyphenols from renewable resources}, series = {Engineering in Life Sciences}, volume = {13}, journal = {Engineering in Life Sciences}, number = {3}, publisher = {Wiley}, address = {Weinheim}, doi = {10.1002/elsc.201200188}, pages = {239 -- 246}, year = {2013}, abstract = {Commercial materials with polyvinylpolypyrrolidone and polymeric amberlites (XAD7HP, XAD16) are commonly used for the adsorptive downstream processing of polyphenols from renewable resources. In this study, beta-zeolite-based adsorbent systems were examined, and their properties were compared to organic resins. Batch adsorption experiments were conducted with synthetic solutions of major polyphenols. Adsorption isotherms and desorption characteristics of individual adsorbent were determined based on these results. Maximum adsorption capacities were calculated using the Langmuir model. For example, the zeolites had capacities up to 203.2 mg/g for ferulic acid. To extend these results to a complex system, additional experiments were performed on rapeseed meal and wheat seed extracts as representative renewable resources. HPLC analysis showed that with 7.5\% w/v, which is regarded as the optimum amount of zeolites, zeolites A and B could bind 100\% of the major polyphenols as well as release polyphenols at high yields. Additionally, regeneration experiments were performed with isopropyl alcohol at 99°C to evaluate how zeolites regenerate under mild conditions. The results showed only a negligible loss of adsorption capacity and no loss of desorption capacity. In summary, it was concluded that beta-zeolites were promising adsorbents for developing new processes to isolate polyphenols from renewable resources.}, language = {en} }