@article{TippkoetterStueckmannKrolletal.2009,
  author    = {Tippk{\"o}tter, Nils and St{\"u}ckmann, Henning and Kroll, Stephen and Winkelmann, Gunda and Noack, Udo and Scheper, Thomas and Ulber, Roland},
  title     = {A semi-quantitative dipstick assay for microcystin},
  series = {Analytical and Bioanalytical Chemistry},
  volume    = {394},
  journal   = {Analytical and Bioanalytical Chemistry},
  number    = {3},
  publisher = {springer},
  address   = {Berlin},
  issn      = {1618-2650},
  doi       = {10.1007/s00216-009-2750-8},
  pages     = {863 -- 869},
  year      = {2009},
  abstract  = {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.},
  language  = {en}
}
@article{UlberTippkoetter2009,
  author    = {Ulber, Roland and Tippk{\"o}tter, Nils},
  title     = {Nitratfreie Molke},
  series = {Rundschau f{\"u}r Fleischhygiene und Lebensmittel{\"u}berwachung},
  journal   = {Rundschau f{\"u}r Fleischhygiene und Lebensmittel{\"u}berwachung},
  number    = {4},
  pages     = {150 -- 152},
  year      = {2009},
  language  = {de}
}
@inproceedings{EngelThieringerTippkoetter2016,
  author    = {Engel, M. and Thieringer, J. and Tippk{\"o}tter, Nils},
  title     = {Microbial electrosynthesis for sustainable biobutanol production},
  series = {New frontiers of biotech-processes (Himmelfahrtstagung) : 02-04 May 2016, Rhein-Mosel-Halle, Koblenz/Germany},
  booktitle = {New frontiers of biotech-processes (Himmelfahrtstagung) : 02-04 May 2016, Rhein-Mosel-Halle, Koblenz/Germany},
  publisher = {DECHEMA},
  address   = {Frankfurt am Main},
  pages     = {77 -- 78},
  year      = {2016},
  language  = {en}
}
@inproceedings{HeringUlberTippkoetter2016,
  author    = {Hering, T. and Ulber, Roland and Tippk{\"o}tter, Nils},
  title     = {Development of a screening system for antimicrobial surfaces},
  series = {New frontiers of biotech-processes (Himmelfahrtstagung) : 02-04 May 2016, Rhein-Mosel-Halle, Koblenz/Germany},
  booktitle = {New frontiers of biotech-processes (Himmelfahrtstagung) : 02-04 May 2016, Rhein-Mosel-Halle, Koblenz/Germany},
  publisher = {DECHEMA},
  address   = {Frankfurt am Main},
  pages     = {129},
  year      = {2016},
  language  = {en}
}
@inproceedings{RothMoehringTippkoetter2016,
  author    = {Roth, J. and M{\"o}hring, S. and Tippk{\"o}tter, Nils},
  title     = {Characterization and evaluation of lignocellulosic biomass 130 hydrolysates for ABE fermentation},
  series = {New frontiers of biotech-processes (Himmelfahrtstagung) : 02-04 May 2016, Rhein-Mosel-Halle, Koblenz/Germany},
  booktitle = {New frontiers of biotech-processes (Himmelfahrtstagung) : 02-04 May 2016, Rhein-Mosel-Halle, Koblenz/Germany},
  publisher = {DECHEMA},
  address   = {Frankfurt am Main},
  pages     = {130},
  year      = {2016},
  language  = {en}
}
@inproceedings{MoehringWulfhorstRothetal.2016,
  author    = {M{\"o}hring, S. and Wulfhorst, H. and Roth, J. and Tippk{\"o}tter, Nils},
  title     = {Pretreatment strategies for lignocellulosic biomass},
  series = {New frontiers of biotech-processes (Himmelfahrtstagung) : 02-04 May 2016, Rhein-Mosel-Halle, Koblenz/Germany},
  booktitle = {New frontiers of biotech-processes (Himmelfahrtstagung) : 02-04 May 2016, Rhein-Mosel-Halle, Koblenz/Germany},
  publisher = {DECHEMA},
  address   = {Frankfurt am Main},
  pages     = {131},
  year      = {2016},
  language  = {en}
}
@inproceedings{CapitainHeringTippkoetteretal.2016,
  author    = {Capitain, C. and Hering, T. and Tippk{\"o}tter, Nils and Ulber, R.},
  title     = {Enzymatic polymerization of lignin model compounds and solubilized lignin in an aqueous ethanol extract},
  series = {New frontiers of biotech-processes (Himmelfahrtstagung) : 02-04 May 2016, Rhein-Mosel-Halle, Koblenz/Germany},
  booktitle = {New frontiers of biotech-processes (Himmelfahrtstagung) : 02-04 May 2016, Rhein-Mosel-Halle, Koblenz/Germany},
  publisher = {DECHEMA},
  address   = {Frankfurt am Main},
  pages     = {151 -- 152},
  year      = {2016},
  language  = {en}
}
@inproceedings{WulfhorstDuweMoehringetal.2016,
  author    = {Wulfhorst, H. and Duwe, A. and M{\"o}hring, S. and Jurca, O. and Tippk{\"o}tter, Nils},
  title     = {Analysis of pretreated biomass by differential scanning 132 calorimetry and multivariate data analysis},
  series = {New frontiers of biotech-processes (Himmelfahrtstagung) : 02-04 May 2016, Rhein-Mosel-Halle, Koblenz/Germany},
  booktitle = {New frontiers of biotech-processes (Himmelfahrtstagung) : 02-04 May 2016, Rhein-Mosel-Halle, Koblenz/Germany},
  publisher = {DECHEMA},
  address   = {Frankfurt am Main},
  pages     = {132},
  year      = {2016},
  language  = {en}
}
@inproceedings{DeterdingTippkoetterUlber2006,
  author    = {Deterding, A. and Tippk{\"o}tter, Nils and Ulber, R.},
  title     = {Online-Essigs{\"a}ureanalytik in Fermentationsbr{\"u}hen mittels Fließdiffusionstechnik (FDT)},
  series = {Technische Systeme f{\"u}r Biotechnologie und Umwelt : 13. Heiligenst{\"a}dter Kolloquium, Heilbad Heiligenstadt, 25.09. - 27.09.2006},
  booktitle = {Technische Systeme f{\"u}r Biotechnologie und Umwelt : 13. Heiligenst{\"a}dter Kolloquium, Heilbad Heiligenstadt, 25.09. - 27.09.2006},
  editor    = {Beckmann, Dieter},
  address   = {Heiligenstadt},
  organization    = {Institut f{\"u}r Bioprozeß- und Analysenmeßtechnik},
  isbn      = {978-3-00-018621-9},
  pages     = {273 -- 280},
  year      = {2006},
  language  = {de}
}
@inproceedings{TippkoetterSchuenemannChristmannetal.2008,
  author    = {Tippk{\"o}tter, Nils and Sch{\"u}nemann, V. and Christmann, R. and Pasteur, A. and Schweizer, J. and Ulber, R.},
  title     = {Bioaffinity Layering magnetisierbarer Mikro- und Nanopartikel},
  series = {Technische Systeme f{\"u}r die Lebenswissenschaften : 14. Heiligenst{\"a}dter Kolloquium, Heilbad Heiligenstadt, 22.09. - 24.09.2008},
  booktitle = {Technische Systeme f{\"u}r die Lebenswissenschaften : 14. Heiligenst{\"a}dter Kolloquium, Heilbad Heiligenstadt, 22.09. - 24.09.2008},
  editor    = {Beckmann, Dieter},
  address   = {Heiligenstadt},
  isbn      = {978-3-00-025695-0},
  pages     = {97 -- 98},
  year      = {2008},
  language  = {de}
}
@inproceedings{SiekerDuwePothetal.2012,
  author    = {Sieker, T. and Duwe, A. and Poth, S. and Tippk{\"o}tter, Nils and Ulber, R.},
  title     = {Herstellung von Itacons{\"a}ure aus Buchenholzhydrolysaten},
  series = {Kurzfassungsband / GVC-DECHEMA Vortrags- und Diskussionstagung Biopharmazeutische Produktion : 14. - 16. Mai 2012. Konzerthaus Freibung},
  booktitle = {Kurzfassungsband / GVC-DECHEMA Vortrags- und Diskussionstagung Biopharmazeutische Produktion : 14. - 16. Mai 2012. Konzerthaus Freibung},
  publisher = {DECHEMA},
  address   = {Frankfurt, M.},
  pages     = {57},
  year      = {2012},
  language  = {de}
}
@misc{AlKaidyTippkoetterUlber2014,
  author    = {Al-Kaidy, Huschyar and Tippk{\"o}tter, Nils and Ulber, Roland},
  title     = {Vorrichtung und Verfahren zur Bestimmung des Kontaktwinkels eines fl{\"u}ssigen oder mit Fl{\"u}ssigkeit gef{\"u}llten K{\"o}rpers [Offenlegungsschrift]},
  publisher = {Deutsches Patent- und Markenamt},
  address   = {M{\"u}nchen},
  pages     = {13 Seiten},
  year      = {2014},
  abstract  = {Die vorliegende Erfindung betrifft eine Vorrichtung und ein Verfahren zur Bestimmung des Kontaktwinkels eines fl{\"u}ssigen oder mit Fl{\"u}ssigkeit gef{\"u}llten K{\"o}rpers. Dieser besteht aus einem Tr{\"a}ger (1) und einer damit verbundenen, in einem Winkelbereich von mehr als 0° bis maximal 90° neigbaren Ebene (8) mit einer darin ausgebildeten Abrollbahn (9) f{\"u}r den fl{\"u}ssigen oder mit Fl{\"u}ssigkeit gef{\"u}llten K{\"o}rper. An der Ebene (8) sind mehrere Sensoren (11, 12) zur Erfassung der Rolldauer des K{\"o}rpers entlang der Rollstrecke angeordnet. Erfindungsgem{\"a}ß ist vorgesehen, dass die Einstellung des Neigungswinkels der Ebene (8) {\"u}ber ein Winkelmessger{\"a}t (10) erfolgt, wodurch ein Abrollwinkel erfassbar ist, bei dem der K{\"o}rper in Bewegung ger{\"a}t. Aus der Rolldauer, der Rollstrecke und dem Abrollwinkel wird der Kontaktwinkel des K{\"o}rpers ermittelt.},
  language  = {de}
}
@misc{AlKaidyTippkoetterUlber2013,
  author    = {Al-Kaidy, Huschyar and Tippk{\"o}tter, Nils and Ulber, Roland},
  title     = {A system and a method for the implementation of chemical, biological or physical reactions [Europ{\"a}ische Patentanmeldung]},
  publisher = {Europ{\"a}isches Patentamt},
  address   = {Den Hague},
  pages     = {16 Seiten},
  year      = {2013},
  abstract  = {The invention relates to a system for the implementation of chemical, biological or physical reactions, consisting of - one or more magnetic micro-reactors, each comprising a shell made of hydrophobic magnetic nanoparticles encapsulating an aqueous core, - a plane platform comprising a surface to receive the micro-reactors, - a source that generates a magnetic field above or underneath the platform for manipulating the one or more hydrophobic magnetic micro-reactors, or for moving them along the surface of the platform from one position to another position, characterized in that the aqueous core of the one or more magnetic micro-reactors contains a reaction solution or buffer, and wherein the magnetic field generated by the source correlates to a defined position on the surface of the platform.},
  language  = {en}
}
@misc{StadtmuellerTippkoetterUlber2013,
  author    = {Stadtm{\"u}ller, Ralf and Tippk{\"o}tter, Nils and Ulber, Roland},
  title     = {A method for production of single-stranded nucleic acids [Europ{\"a}ische Patentanmeldung]},
  publisher = {Europ{\"a}isches Patentamt},
  address   = {Den Hague},
  pages     = {14 Seiten},
  year      = {2013},
  language  = {en}
}
@article{TippkoetterRoikaewUlber2007,
  author    = {Tippk{\"o}tter, Nils and Roikaew, N. and Ulber, R.},
  title     = {Nitratentfernung aus Molkekonzentrat mit biotechnologischer Regeneration der Abw{\"a}sser},
  series = {Deutsche Milchwirtschaft},
  volume    = {58},
  journal   = {Deutsche Milchwirtschaft},
  number    = {15},
  issn      = {0012-0480},
  pages     = {540 -- 542},
  year      = {2007},
  language  = {de}
}
@article{TippkoetterRoikaewUlber2008,
  author    = {Tippk{\"o}tter, Nils and Roikaew, W. and Ulber, R.},
  title     = {Nitrate removal from whey concentrate with biotechnological regeneration of the waste water},
  series = {European dairy magazine : EDM},
  journal   = {European dairy magazine : EDM},
  number    = {1},
  isbn      = {0936-6318},
  pages     = {30 -- 32},
  year      = {2008},
  language  = {en}
}
@article{UlberTippkoetterBuchholzetal.2008,
  author    = {Ulber, R. and Tippk{\"o}tter, Nils and Buchholz, H. and Demmer, W. and Scheper, T.},
  title     = {Innovative Verfahren in der Molkeaufarbeitung zur Gewinnung neuer Produkte},
  series = {Deutsche Milchwirtschaft},
  volume    = {59},
  journal   = {Deutsche Milchwirtschaft},
  number    = {19},
  issn      = {0012-0480},
  pages     = {704 -- 706},
  year      = {2008},
  language  = {de}
}
@inproceedings{AlKaidyUlberTippkoetter2014,
  author    = {Al-Kaidy, H. and Ulber, R. and Tippk{\"o}tter, Nils},
  title     = {A platform technology for the automated reaction control in magnetizable micro-fluidic droplets},
  series = {Biomaterials - made in bioreactors : book of abstracts, May 26 - 28, 2014, Radisson Blu Park Hotel and Conference Dentre, Radebeul, Germany},
  booktitle = {Biomaterials - made in bioreactors : book of abstracts, May 26 - 28, 2014, Radisson Blu Park Hotel and Conference Dentre, Radebeul, Germany},
  publisher = {DECHEMA},
  address   = {Frankfurt am Main},
  pages     = {21 -- 22},
  year      = {2014},
  language  = {en}
}
@inproceedings{TippkoetterRoikaewUlber2008,
  author    = {Tippk{\"o}tter, Nils and Roikaew, W. and Ulber, R.},
  title     = {An automated pilot plant for the bioengineering processing of concentrated whey},
  series = {European BioPerspectives : in cooperation with BIOTECHNICA 2008 : 7 - 9 October 2008 Hannover, Germany ; book of abstracts ; abstracts, poster programme},
  booktitle = {European BioPerspectives : in cooperation with BIOTECHNICA 2008 : 7 - 9 October 2008 Hannover, Germany ; book of abstracts ; abstracts, poster programme},
  publisher = {Dechema},
  address   = {Frankfurt am Main},
  pages     = {98},
  year      = {2008},
  language  = {en}
}
@inproceedings{TippkoetterMoehringMaureretal.2013,
  author    = {Tippk{\"o}tter, Nils and M{\"o}hring, S. and Maurer, S. and Roth, J.},
  title     = {Dezentrale Vorbehandlung und Verarbeitung pflanzlicher Reststoffe f{\"u}r Bioraffinerien},
  series = {Kurzfassungen der Vortr{\"a}ge nach Sessions : Fr{\"u}hjahrstagung der Biotechnologen 2013, 4. - 5. M{\"a}rz 2013, Dechema-Haus, Frankfurt am Main},
  booktitle = {Kurzfassungen der Vortr{\"a}ge nach Sessions : Fr{\"u}hjahrstagung der Biotechnologen 2013, 4. - 5. M{\"a}rz 2013, Dechema-Haus, Frankfurt am Main},
  address   = {Frankfurt am Main},
  pages     = {5},
  year      = {2013},
  language  = {de}
}
@inproceedings{Tippkoetter2013,
  author    = {Tippk{\"o}tter, Nils},
  title     = {Biotechnologische Gewinnung von Wertstoffen aus Molke : BiobasedWorld - Innovation in food},
  series = {Biotechnica 2013 : European biotechnology science \& industry news},
  volume    = {12},
  booktitle = {Biotechnica 2013 : European biotechnology science \& industry news},
  number    = {9, special},
  pages     = {33 -- 50},
  year      = {2013},
  language  = {de}
}
@inproceedings{TippkoetterStueckmannWinkelmannetal.2007,
  author    = {Tippk{\"o}tter, Nils and St{\"u}ckmann, H. and Winkelmann, G. and Noack, U. and Beutel, S. and Scheper, T. and Ulber, R.},
  title     = {Optimisation of antibody-labelling of gold colloids for their application in an immunchromatographic assay for microcystin-LR},
  series = {European BioPerspectives : celebrating the 25th DECHEMA annual convention of biotechnologists ; 30 May - 1 June 2007, Cologne, Germany ; book of abstracts ; abstracts, poster programme},
  booktitle = {European BioPerspectives : celebrating the 25th DECHEMA annual convention of biotechnologists ; 30 May - 1 June 2007, Cologne, Germany ; book of abstracts ; abstracts, poster programme},
  publisher = {Dechema},
  address   = {Frankfurt am Main},
  pages     = {126},
  year      = {2007},
  language  = {en}
}
@incollection{WagemannTippkoetter2019,
  author    = {Wagemann, Kurt and Tippk{\"o}tter, Nils},
  title     = {Biorefineries: a short introduction},
  series = {Biorefineries},
  booktitle = {Biorefineries},
  publisher = {Springer},
  address   = {Cham},
  isbn      = {978-3-319-97117-9},
  doi       = {10.1007/10_2017_4},
  pages     = {1 -- 11},
  year      = {2019},
  abstract  = {The terms bioeconomy and biorefineries are used for a variety of processes and developments. This short introduction is intended to provide a delimitation and clarification of the terminology as well as a classification of current biorefinery concepts. The basic process diagrams of the most important biorefinery types are shown.},
  language  = {en}
}
@incollection{UlberMufflerTippkoetteretal.2011,
  author    = {Ulber, Roland and Muffler, Kai and Tippk{\"o}tter, Nils and Hirth, Thomas and Sell, Dieter},
  title     = {Introduction to Renewable Resources in the Chemical Industry},
  series = {Renewable raw materials : new feedstocks for the chemical industry},
  booktitle = {Renewable raw materials : new feedstocks for the chemical industry},
  editor    = {Ulber, Roland and Sell, Dieter and Hirth, Thomas},
  edition   = {1. Auflage},
  publisher = {Wiley-VCH-Verlag},
  address   = {Weinheim},
  isbn      = {978-3-527-32548-1},
  pages     = {1 -- 6},
  year      = {2011},
  language  = {de}
}
@article{TeumerCapitainRossJonesetal.2018,
  author    = {Teumer, T. and Capitain, C. and Ross-Jones, J. and Tippk{\"o}tter, Nils and R{\"a}dle, M. and Methner, F.-J.},
  title     = {In-line Haze Monitoring Using a Spectrally Resolved Back Scattering Sensor},
  series = {BrewingScience},
  volume    = {71},
  journal   = {BrewingScience},
  number    = {5/6},
  publisher = {Fachverlag Hans Carl},
  address   = {N{\"u}rnberg},
  issn      = {1613-2041},
  pages     = {49 -- 55},
  year      = {2018},
  abstract  = {In the present work an optical sensor in combination with a spectrally resolved detection device for in-line particle-size-monitoring for quality control in beer production is presented. The principle relies on the size and wavelength dependent backscatter of growing particles in fluids. Measured interference structures of backscattered light are compared with calculated theoretical values, based on Mie-Theory, and fitted with a linear least square method to obtain particle size distributions. For this purpose, a broadband light source in combination with a process-CCD-spectrometer (charge ? coupled device spectrometer) and process adapted fiber optics are used. The goal is the development of an easy and flexible measurement device for in-line-monitoring of particle size. The presented device can be directly installed in product fill tubes or vessels, follows CIP- (cleaning in place) and removes the need of sample taking. A proof of concept and preliminary results, measuring protein precipitation, are presented.},
  language  = {en}
}
@incollection{TippkoetterMoehringRothetal.2019,
  author    = {Tippk{\"o}tter, Nils and M{\"o}hring, Sophie and Roth, Jasmine and Wulfhorst, Helene},
  title     = {Logistics of lignocellulosic feedstocks: preprocessing as a preferable option},
  series = {Biorefineries},
  booktitle = {Biorefineries},
  publisher = {Springer},
  address   = {Cham},
  isbn      = {978-3-319-97117-9},
  doi       = {10.1007/10_2017_58},
  pages     = {43 -- 68},
  year      = {2019},
  abstract  = {In comparison to crude oil, biorefinery raw materials are challenging in concerns of transport and storage. The plant raw materials are more voluminous, so that shredding and compacting usually are necessary before transport. These mechanical processes can have a negative influence on the subsequent biotechnological processing and shelf life of the raw materials. Various approaches and their effects on renewable raw materials are shown. In addition, aspects of decentralized pretreatment steps are discussed. Another important aspect of pretreatment is the varying composition of the raw materials depending on the growth conditions. This problem can be solved with advanced on-site spectrometric analysis of the material.},
  language  = {en}
}
@incollection{DuweTippkoetterUlber2018,
  author    = {Duwe, A. and Tippk{\"o}tter, Nils and Ulber, R.},
  title     = {Lignocellulose-Biorefinery: Ethanol-Focused},
  series = {Biorefineries},
  booktitle = {Biorefineries},
  publisher = {Springer},
  address   = {Cham},
  doi       = {10.1007/10_2016_72},
  pages     = {177 -- 215},
  year      = {2018},
  abstract  = {The development prospects of the world markets for petroleum and other liquid fuels are diverse and partly contradictory. However, comprehensive changes for the energy supply of the future are essential. Notwithstanding the fact that there are still very large deposits of energy resources from a geological point of view, the finite nature of conventional oil reserves is indisputable. To reduce our dependence on oil, the EU, the USA, and other major economic zones rely on energy diversification. For this purpose, alternative materials and technologies are being sought, and is most obvious in the transport sector. The objective is to progressively replace fossil fuels with renewable and more sustainable fuels. In this respect, biofuels have a pre-eminent position in terms of their capability of blending with fossil fuels and being usable in existing cars without substantial modification. Ethanol can be considered as the primary renewable liquid fuel. In this chapter enzymes, micro-organisms, and processes for ethanol production based on renewable resources are described.},
  language  = {en}
}
@techreport{Tippkoetter2018,
  author    = {Tippk{\"o}tter, Nils},
  title     = {Lokale Vorbehandlung nachwachsender Rohstoffe f{\"u}r Bioraffinerien (BioSats) : Schlussbericht zum Vorhaben : Laufzeit: 01.03.2012 bis 30.04.2017},
  organization    = {Technische Universit{\"a}t Kaiserslautern},
  doi       = {10.2314/GBV:1024204243},
  pages     = {191 Seiten},
  year      = {2018},
  language  = {de}
}
@article{EngelHoltmannUlberetal.2018,
  author    = {Engel, Mareike and Holtmann, Dirk and Ulber, Roland and Tippk{\"o}tter, Nils},
  title     = {Increased Biobutanol Production by Mediator-Less Electro-Fermentation},
  series = {Biotechnology Journal},
  journal   = {Biotechnology Journal},
  number    = {Volume 14, Issue 4},
  publisher = {Wiley-VCH},
  issn      = {1860-7314},
  doi       = {10.1002/biot.201800514},
  pages     = {Artikel 1800514},
  year      = {2018},
  abstract  = {A future bio-economy should not only be based on renewable raw materials but also in the raise of carbon yields of existing production routes. Microbial electrochemical technologies are gaining increased attention for this purpose. In this study, the electro-fermentative production of biobutanol with C. acetobutylicum without the use of exogenous mediators is investigated regarding the medium composition and the reactor design. It is shown that the use of an optimized synthetic culture medium allows higher product concentrations, increased biofilm formation, and higher conductivities compared to a synthetic medium supplemented with yeast extract. Moreover, the optimization of the reactor system results in a doubling of the maximum product concentrations for fermentation products. When a working electrode is polarized at -600 mV vs. Ag/AgCl, a shift from butyrate to acetone and butanol production is induced. This leads to an increased final solvent yield of Yᴀᴃᴇ = 0.202 gg⁻¹ (control 0.103 gg⁻¹), which is also reflected in a higher carbon efficiency of 37.6\% compared to 23.3\% (control) as well as a fourfold decrease in simplified E-factor to 0.43. The results are promising for further development of biobutanol production in bioelectrochemical systems in order to fulfil the principles of Green Chemistry.},
  language  = {en}
}
@book{WagemannTippkoetter2019,
  author    = {Wagemann, Kurt and Tippk{\"o}tter, Nils},
  title     = {Biorefineries / Kurt Wagemann, Nils Tippk{\"o}tter (editors)},
  series = {Advances in biochemical engineering/biotechnology book series (ABE)},
  journal   = {Advances in biochemical engineering/biotechnology book series (ABE)},
  publisher = {Springer},
  address   = {Cham (Switzerland)},
  isbn      = {978-3-319-97117-9},
  doi       = {10.1007/978-3-319-97119-3},
  pages     = {VI, 549 Seiten},
  year      = {2019},
  language  = {en}
}
@article{EngelGemuendeHoltmannetal.2019,
  author    = {Engel, Mareike and Gem{\"u}nde, Andre and Holtmann, Dirk and M{\"u}ller-Renno, Christine and Ziegler, Christiane and Tippk{\"o}tter, Nils and Ulber, Roland},
  title     = {Clostridium acetobutylicum's connecting world: cell appendage formation in bioelectrochemical systems},
  series = {ChemElectroChem},
  journal   = {ChemElectroChem},
  number    = {Accepted Article},
  publisher = {Wiley},
  address   = {Weinheim},
  issn      = {2196-0216},
  doi       = {10.1002/celc.201901656},
  year      = {2019},
  language  = {en}
}
@article{EngelBayerHoltmannetal.2019,
  author    = {Engel, Mareike and Bayer, Hendrik and Holtmann, Dirk and Tippk{\"o}tter, Nils and Ulber, Roland},
  title     = {Flavin secretion of Clostridium acetobutylicum in a bioelectrochemical system - Is an iron limitation involved?},
  series = {Bioelectrochemistry},
  journal   = {Bioelectrochemistry},
  number    = {In Press, Accepted Manuscript},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1567-5394},
  doi       = {10.1016/j.bioelechem.2019.05.014},
  year      = {2019},
  language  = {en}
}
@techreport{TippkoetterWagner2019,
  author    = {Tippk{\"o}tter, Nils and Wagner, Sebastian},
  title     = {Biomimetischer Klebstoff aus ligninhaltigen Pflanzenresten (Teilvorhaben 1 und 2) : Schlussbericht zum Vorhaben : Laufzeit: 01.01.2016 bis 31.03.2019},
  publisher = {FH Aachen},
  address   = {J{\"u}lich},
  doi       = {10.2314/KXP:169732777X},
  pages     = {109 S.},
  year      = {2019},
  language  = {de}
}
@inproceedings{WulfhorstMerseburgTippkoetter2015,
  author    = {Wulfhorst, Helene and Merseburg, Johannes and Tippk{\"o}tter, Nils},
  title     = {Analyse von Lignocellulose mittels dynamischer Differenzkalorimetrie und Infrarot - Spektrometrie},
  series = {12. Dresdner Sensor-Symposium 2015 2015-12-07 - 2015-12-09},
  booktitle = {12. Dresdner Sensor-Symposium 2015 2015-12-07 - 2015-12-09},
  isbn      = {978-3-9813484-9-1},
  doi       = {10.5162/12dss2015/P6.2},
  pages     = {210 -- 215},
  year      = {2015},
  language  = {de}
}
@misc{StadtmuellerTippkoetterUlber2015,
  author    = {Stadtm{\"u}ller, Ralf and Tippk{\"o}tter, Nils and Ulber, Roland},
  title     = {Method for production of single-stranded macronucleotides},
  year      = {2015},
  abstract  = {The invention relates to a method for production of single-stranded macronucleotides by amplifying and ligating an extended monomeric single-stranded target nucleic acid sequence (targetss) into a repetitive cluster of double-stranded target nucleic acid sequences (targetds), and subsequently cloning the construct into a vector (aptagene vector). The aptagene vector is transformed into host cells for replication of the aptagene and isolated in order to optain single-stranded target sequences (targetss). The invention also relates to single-stranded nucleic acids, produced by a method of the invention.},
  language  = {en}
}
@misc{HuschyarTippkoetterUlber2015,
  author    = {Huschyar, Al-Kaidy and Tippk{\"o}tter, Nils and Ulber, Roland},
  title     = {System und Verfahren zur Durchf{\"u}hrung von chemischen, biologischen oder physikalischen Reaktionen},
  year      = {2015},
  language  = {de}
}
@misc{AlKaidyTippkoetterUlber2016,
  author    = {Al-Kaidy, Huschyar and Tippk{\"o}tter, Nils and Ulber, Roland},
  title     = {Vorrichtung und Verfahren zur Bestimmung des Kontaktwinkels eines Fl{\"u}ssigk{\"o}rpers mit einer Festk{\"o}rperoberfl{\"a}che},
  year      = {2016},
  abstract  = {Die vorliegende Erfindung betrifft eine Vorrichtung und ein Verfahren zur Bestimmung des Kontaktwinkels eines fl{\"u}ssigen oder mit Fl{\"u}ssigkeit gef{\"u}llten K{\"o}rpers. Dieser besteht aus einem Tr{\"a}ger (1) und einer damit verbundenen, in einem Winkelbereich von mehr als 0 ° bis maximal 90 ° neigbaren Ebene (8) mit einer darin ausgebildeten Abrollbahn (9) f{\"u}r den fl{\"u}ssigen oder mit Fl{\"u}ssigkeit gef{\"u}llten K{\"o}rper. An der Ebene (8) sind mehrere Sensoren (11,12) zur Erfassung der Rolldauer des K{\"o}rpers entlang der Rollstrecke angeordnet. Erfindungsgem{\"a}ß ist vorgesehen, dass die Einstellung des Neigungswinkels der Ebene (8) {\"u}ber ein Winkelmessger{\"a}t (10) erfolgt, wodurch ein Abrollwinkel erfassbar ist, bei dem der K{\"o}rper in Bewegung ger{\"a}t. Aus der Rolldauer, der Rollstrecke und dem Abrollwinkel wird der Kontaktwinkel des K{\"o}rpers ermittelt.},
  language  = {de}
}
@article{CapitainRossJonesMoehringetal.2020,
  author    = {Capitain, Charlotte and Ross-Jones, Jesse and M{\"o}hring, Sophie and Tippk{\"o}tter, Nils},
  title     = {Differential scanning calorimetry for quantification of polymer biodegradability in compost},
  series = {International Biodeterioration \& Biodegradation},
  volume    = {149},
  journal   = {International Biodeterioration \& Biodegradation},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0964-8305},
  doi       = {10.1016/j.ibiod.2020.104914},
  pages     = {In Press, Article number 104914},
  year      = {2020},
  abstract  = {The objective of this study is the establishment of a differential scanning calorimetry (DSC) based method for online analysis of the biodegradation of polymers in complex environments. Structural changes during biodegradation, such as an increase in brittleness or crystallinity, can be detected by carefully observing characteristic changes in DSC profiles. Until now, DSC profiles have not been used to draw quantitative conclusions about biodegradation. A new method is presented for quantifying the biodegradation using DSC data, whereby the results were validated using two reference methods. The proposed method is applied to evaluate the biodegradation of three polymeric biomaterials: polyhydroxybutyrate (PHB), cellulose acetate (CA) and Organosolv lignin. The method is suitable for the precise quantification of the biodegradability of PHB. For CA and lignin, conclusions regarding their biodegradation can be drawn with lower resolutions. The proposed method is also able to quantify the biodegradation of blends or composite materials, which differentiates it from commonly used degradation detection methods.},
  language  = {en}
}
@article{TippkoetterRoikaewUlberetal.2010,
  author    = {Tippk{\"o}tter, Nils and Roikaew, Wipa and Ulber, Roland and Hoffmann, Alexander and Denzler, Hans-J{\"o}rg and Buchholz, Heinrich},
  title     = {Paracoccus denitrificans for the effluent recycling during continuous denitrification of liquid food},
  series = {Biotechnology Progress},
  volume    = {26},
  journal   = {Biotechnology Progress},
  number    = {3},
  publisher = {Wiley},
  address   = {Hoboken, NJ},
  issn      = {8756-7938},
  doi       = {10.1002/btpr.384},
  pages     = {756 -- 762},
  year      = {2010},
  abstract  = {Nitrate is an undesirable component of several foods. A typical case of contamination with high nitrate contents is whey concentrate, containing nitrate in concentrations up to 25 l. The microbiological removal of nitrate by Paracoccus denitrificans under formation of harmless nitrogen in combination with a cell retention reactor is described here. Focus lies on the resource-conserving design of a microbal denitrification process. Two methods are compared. The application of polyvinyl alcohol-immobilized cells, which can be applied several times in whey feed, is compared with the implementation of a two step denitrification system. First, the whey concentrate's nitrate is removed by ion exchange and subsequently the eluent regenerated by microorganisms under their retention by crossflow filtration. Nitrite and nitrate concentrations were determined by reflectometric color measurement with a commercially available Reflectoquant® device. Correction factors for these media had to be determined. During the pilot development, bioreactors from 4 to 250 mg·L-1 and crossflow units with membrane areas from 0.02 to 0.80 m2 were examined. Based on the results of the pilot plants, a scaling for the exemplary process of denitrifying 1,000 tons per day is discussed.},
  language  = {en}
}
@article{UlberPothMonzonetal.2010,
  author    = {Ulber, Roland and Poth, Sebastian and Monzon, Magaly and Tippk{\"o}tter, Nils},
  title     = {Prozessintegration von Hydrolyse und Fermentation von Cellulose- Faserstoff},
  series = {Chemie Ingenieur Technik},
  volume    = {82},
  journal   = {Chemie Ingenieur Technik},
  number    = {1-2},
  issn      = {1522-2640},
  doi       = {10.1002/cite.200900103},
  pages     = {135 -- 139},
  year      = {2010},
  abstract  = {Ein viel versprechender erneuerbarer Rohstoff f{\"u}r die Produktion von Chemikalien und Treibstoffen ist Lignocellulose aus pflanzlicher Biomasse. Die darin enthaltenen Zucker k{\"o}nnen mittels enzymatischer Hydrolyse freigesetzt und fermentativ zu Ethanol umgesetzt werden. Ein interessanter Ansatz ist dabei die simultane Verzuckerung und Fermentation. Hefen und Enzyme haben mit 30 °C bzw. 50 °C zwar unterschiedliche Temperaturoptima, es konnte aber gezeigt werden, dass auch bei den niedrigeren Temperaturen eine Umsetzung der Cellulose zu Glucose erfolgt, wenn auch langsamer als bei optimalen Bedingungen. Außerdem konnte in Vorversuchen gezeigt werden, dass Ethanol in den zu erwartenden Konzentrationen keinen Einfluss auf die enzymatische Umsetzung hat.},
  language  = {de}
}
@article{SiekerNeunerDimitrovaetal.2010,
  author    = {Sieker, Tim and Neuner, Andreas and Dimitrova, Darina and Tippk{\"o}tter, Nils and Bart, Hans-J{\"o}rg and Heinzle, Elmar and Ulber, Roland},
  title     = {Grassilage als Rohstoff f{\"u}r die chemische Industrie},
  series = {Chemie Ingenieur Technik},
  volume    = {82},
  journal   = {Chemie Ingenieur Technik},
  number    = {8, Special Issue: Industrielle Nutzung nachwachsender Rohstoffe},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {1522-2640},
  doi       = {10.1002/cite.201000088},
  pages     = {1153 -- 1159},
  year      = {2010},
  abstract  = {Grassilage stellt einen nachwachsenden Rohstoff mit großem Potenzial dar. Neben Cellulose und Hemicellulose enth{\"a}lt sie auch organische S{\"a}uren, insbesondere Milchs{\"a}ure. In einem Bioraffinerie-Projekt wird die Milchs{\"a}ure aus der Silage isoliert und mit gentechnisch optimierten St{\"a}mmen zu L-Lysin weiterverarbeitet. Die Lignocellulose wird hydrolysiert und zu Ethanol fermentiert. Ein besonderes Augenmerk liegt auf der Integration der unterschiedlichen Prozesse sowie der einzelnen Prozessschritte zu einem Gesamtprozess, der s{\"a}mtliche Inhaltsstoffe der Silage verwertet.},
  language  = {de}
}