@article{TippkoetterWollnySucketal.2014,
  author    = {Tippk{\"o}tter, Nils and Wollny, Steffen and Suck, Kirstin and Sohling, Ulrich and Ruf, Friedrich and Ulber, Roland},
  title     = {Recycling of spent oil bleaching earth as source of glycerol for the anaerobic production of acetone, butanol, and ethanol with Clostridium diolis and lipolytic Clostridium lundense},
  series = {Engineering in Life Sciences},
  volume    = {14},
  journal   = {Engineering in Life Sciences},
  number    = {4},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {1618-2863},
  doi       = {10.1002/elsc.201300113},
  pages     = {425 -- 432},
  year      = {2014},
  abstract  = {A major part of edible oil is subjected to bleaching procedures, primarily with minerals applied as adsorbers. Their recycling is currently done either by regaining the oil via organic solvent extraction or by using the spent bleaching earth (SBE) as additive for animal feed, etc. As a new method, the reutilization of the by-product SBE for the microbiologic formation of acetone, butanol, and ethanol (ABE) is presented as proof-of-concept. The SBE was taken from a palm oil cleaning process. The recycling concept is based on the application of lipolytic clostridia strains. Due to considerably long fermentation times, co-fermentation with Candida rugosa and enzymatic hydrolyses of the bound oil with a subsequent clostridia fermentation are shown as alternative routes. Anaerobic fermentations under comparison of different clostridia strains were performed with glycerol media, enzymatically hydrolyzed palm oil and SBE. Solutes, side product compositions and productivities were quantified via HPLC. A successful production of ABE solutes from SBE has been done with a yield of 0.15 g butanol per gram of bound glycerol. Thus, the biotechnological recycling of the waste stream is possible in principle. Inhibition of the substrate suspension has been observed. A chromatographic ion-exchange of substrates increased the biomass concentration.},
  language  = {en}
}
@article{TixMollKrafftetal.2024,
  author    = {Tix, Julian and Moll, Fabian and Krafft, Simone and Betsch, Matthias and Tippk{\"o}tter, Nils},
  title     = {Hydrogen production from enzymatic pretreated organic waste with thermotoga neapolitana},
  series = {Energies},
  volume    = {17},
  journal   = {Energies},
  number    = {12},
  publisher = {MDPI},
  address   = {Basel},
  issn      = {1996-1073},
  doi       = {10.3390/en17122938},
  pages     = {20 Seiten},
  year      = {2024},
  abstract  = {Biomass from various types of organic waste was tested for possible use in hydrogen production. The composition consisted of lignified samples, green waste, and kitchen scraps such as fruit and vegetable peels and leftover food. For this purpose, the enzymatic pretreatment of organic waste with a combination of five different hydrolytic enzymes (cellulase, amylase, glucoamylase, pectinase and xylase) was investigated to determine its ability to produce hydrogen (H2) with the hydrolyzate produced here. In course, the anaerobic rod-shaped bacterium T. neapolitana was used for H2 production. First, the enzymes were investigated using different substrates in preliminary experiments. Subsequently, hydrolyses were carried out using different types of organic waste. In the hydrolysis carried out here for 48 h, an increase in glucose concentration of 481\% was measured for waste loads containing starch, corresponding to a glucose concentration at the end of hydrolysis of 7.5 g·L-1. In the subsequent set fermentation in serum bottles, a H2 yield of 1.26 mmol H2 was obtained in the overhead space when Terrific Broth Medium with glucose and yeast extract (TBGY medium) was used. When hydrolyzed organic waste was used, even a H2 yield of 1.37 mmol could be achieved in the overhead space. In addition, a dedicated reactor system for the anaerobic fermentation of T. neapolitana to produce H2 was developed. The bioreactor developed here can ferment anaerobically with a very low loss of produced gas. Here, after 24 h, a hydrogen concentration of 83\% could be measured in the overhead space.},
  language  = {en}
}
@article{TranBongaertsVladetal.1997,
  author    = {Tran, Quang Hon and Bongaerts, Johannes and Vlad, Dorina and Unden, Gottfried},
  title     = {Requirement for the proton-pumping NADH dehydrogenase I of Escherichia coli in respiration of NADH to fumarate and its bioenergetic implications},
  series = {European journal of biochemistry},
  volume    = {Vol. 244},
  journal   = {European journal of biochemistry},
  number    = {Iss. 1},
  issn      = {0014-2956},
  pages     = {155 -- 160},
  year      = {1997},
  language  = {en}
}
@article{TrappLammersEngudaretal.2023,
  author    = {Trapp, Svenja and Lammers, Tom and Engudar, Gokce and Hoehr, Cornelia and Denkova, Antonia G. and Paulßen, Elisabeth and de Kruijff, Robin M.},
  title     = {Membrane-based microfluidic solvent extraction of Ga-68 from aqueous Zn solutions: towards an automated cyclotron production loop},
  series = {EJNMMI Radiopharmacy and Chemistry},
  volume    = {2023},
  journal   = {EJNMMI Radiopharmacy and Chemistry},
  number    = {8, Article number: 9},
  publisher = {Springer Nature},
  issn      = {2365-421X},
  doi       = {10.1186/s41181-023-00195-2},
  pages     = {1 -- 14},
  year      = {2023},
  language  = {en}
}
@article{TurekKettererClassenetal.2007,
  author    = {Turek, Monika and Ketterer, Lothar and Claßen, Melanie and Berndt, Heinz and Elbers, Gereon and Kr{\"u}ger, Peter and Keusgen, Michael and Sch{\"o}ning, Michael Josef},
  title     = {Development and Electrochemical Investigations of an EIS-(Electrolyte-Insulator-Semiconductor) based Biosensor for Cyanide Detection},
  series = {Sensors},
  volume    = {7},
  journal   = {Sensors},
  number    = {8},
  isbn      = {1424-8220},
  pages     = {1415 -- 1426},
  year      = {2007},
  language  = {en}
}
@article{TuegBaumann1994,
  author    = {T{\"u}g, Helmut and Baumann, Marcus},
  title     = {Problems of UV-B radiation measurements in biological research : critical remarks on current techniques and suggestions for improvements},
  series = {Geophysical research letters},
  volume    = {Vol. 21},
  journal   = {Geophysical research letters},
  number    = {Iss. 8},
  issn      = {1944-8007 (E-Journal); 0094-8276 (Print)},
  pages     = {689 -- 692},
  year      = {1994},
  language  = {en}
}
@article{TuegBaumann1995,
  author    = {T{\"u}g, Helmut and Baumann, Marcus},
  title     = {Reply to the comments by R.L. McKenzie and P.V. Johnston on our paper "Problems of UV-B radiation measurements in biological research: Critical Remarks on current techniques and suggestions for improvements"},
  series = {Geophysical research letters},
  volume    = {Vol. 22},
  journal   = {Geophysical research letters},
  number    = {Iss. 9},
  issn      = {1944-8007 (E-Journal); 0094-8276 (Print)},
  pages     = {1159 -- 1160},
  year      = {1995},
  language  = {en}
}
@article{UndenBeckerBongaertsetal.1995,
  author    = {Unden, G. and Becker, S. and Bongaerts, Johannes and Holighaus, G. and Schirawski, J. and Six, S.},
  title     = {O2-sensing and O2-dependent gene regulation in facultatively anaerobic bacteria},
  series = {Archives of microbiology},
  volume    = {Vol. 164},
  journal   = {Archives of microbiology},
  number    = {Iss. 2},
  issn      = {1432-072X (E-Journal); 0003-9276 (Print); 0302-8933 (Print)},
  pages     = {81 -- 90},
  year      = {1995},
  language  = {en}
}
@article{UndenBeckerBongaertsetal.1994,
  author    = {Unden, G. and Becker, S. and Bongaerts, Johannes and Schirawski, J. and Six, S.},
  title     = {Oxygen regulated gene expression in facultatively anaerobic bacteria},
  series = {Antonie van Leeuwenhoek},
  volume    = {Vol. 66},
  journal   = {Antonie van Leeuwenhoek},
  number    = {Iss. 1-3},
  issn      = {0003-6072 (Print) ; 1572-9699 (online)},
  pages     = {3 -- 22},
  year      = {1994},
  language  = {en}
}
@article{UndenBongaerts1997,
  author    = {Unden, Gottfried and Bongaerts, Johannes},
  title     = {Alternative respiratory pathways of Escherichia coli: energetics and transcriptional regulation in response to electron acceptors},
  series = {Biochimica et biophysica acta (BBA) - Bioenergetics},
  volume    = {Vol. 1320},
  journal   = {Biochimica et biophysica acta (BBA) - Bioenergetics},
  number    = {Iss. 3},
  issn      = {1879-2650 (E-Journal); 0005-2728 (Print)},
  pages     = {217 -- 234},
  year      = {1997},
  language  = {en}
}
@misc{VarrialeKukaTippkoetteretal.2022,
  author    = {Varriale, Ludovica and Kuka, Katrin and Tippk{\"o}tter, Nils and Ulber, Roland},
  title     = {Use of a green biomass in a biorefinery platform},
  series = {Chemie Ingenieur Technik},
  volume    = {94},
  journal   = {Chemie Ingenieur Technik},
  number    = {9},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {0009-286X},
  doi       = {10.1002/cite.202255095},
  pages     = {1299},
  year      = {2022},
  abstract  = {The emerging environmental issues due to the use of fossil resources are encouraging the exploration of new renewable resources. Biomasses are attracting more interest due to the low environmental impacts, low costs, and high availability on earth. In this scenario, green biorefineries are a promising platform in which green biomasses are used as feedstock. Grasses are mainly composed of cellulose and hemicellulose, and lignin is available in a small amount. In this work, a perennial ryegrass was used as feedstock to develop a green bio-refinery platform. Firstly, the grass was mechanically pretreated, thus obtaining a press juice and a press cake fraction. The press juice has high nutritional values and can be employed as part of fermentation media. The press cake can be employed as a substrate either in enzymatic hydrolysis or in solid-state fermentation. The overall aim of this work was to demonstrate different applications of both the liquid and the solid fractions. For this purpose, the filamentous fungus A. niger and the yeast Y. lipolythica were selected for their ability to produce citric acid. Finally, the possibility was assessed to use the press juice as part of fermentation media to cultivate S. cerevisiae and lactic acid bacteria for ethanol and lactic acid fermentation.},
  language  = {en}
}
@article{VoigtAlbrechtSieversetal.2015,
  author    = {Voigt, Birgit and Albrecht, Dirk and Sievers, Susanne and Becher, D{\"o}rte and Bongaerts, Johannes and Evers, Stefan and Schweder, Thomas and Maurer, Karl-Heinz and Hecker, Michael},
  title     = {High-resolution proteome maps of Bacillus licheniformis cells growing in minimal medium},
  series = {Proteomics},
  volume    = {15},
  journal   = {Proteomics},
  number    = {15},
  publisher = {Wiley},
  address   = {Weinheim},
  issn      = {1615-9861},
  doi       = {10.1002/pmic.201400504},
  pages     = {2629 -- 2633},
  year      = {2015},
  language  = {en}
}
@article{VoigtSchroeterJuergenetal.2013,
  author    = {Voigt, Birgit and Schroeter, Rebecca and J{\"u}rgen, Britta and Albrecht, Dirk and Evers, Stefan and Bongaerts, Johannes and Maurer, Karl-Heinz and Schweder, Thomas and Hecker, Michael},
  title     = {The response of Bacillus licheniformis to heat and ethanol stress and the role of the SigB regulon},
  series = {Proteomics},
  volume    = {Vol. 13},
  journal   = {Proteomics},
  number    = {Iss. 14},
  publisher = {Wiley},
  address   = {Weinheim},
  issn      = {1615-9861 (E-Journal); 1615-9853 (Print)},
  pages     = {2140 -- 2146},
  year      = {2013},
  language  = {en}
}
@article{WackwitzBongaertsGoodmanetal.1999,
  author    = {Wackwitz, B. and Bongaerts, Johannes and Goodman, S. D. and Unden, Gottfried},
  title     = {Growth phase-dependent regulation of nuoA-N expression in Escherichia coli K-12 by the Fis protein: upstream binding sites and bioenergetic significance},
  series = {Molecular and general genetics : MGG},
  volume    = {Vol. 262},
  journal   = {Molecular and general genetics : MGG},
  number    = {Iss. 4 - 5},
  issn      = {1617-4623 (E-Journal); 1617-4615 (Print)},
  pages     = {876 -- 883},
  year      = {1999},
  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}
}
@incollection{WagemannTippkoetter2018,
  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      = {2018},
  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}
}
@article{WagnerMolinaBisellietal.2007,
  author    = {Wagner, Torsten and Molina, R. and Biselli, Manfred and Canzoneri, Michele and Schnitzler, Thomas and Yoshinobu, Tatsuo and Sch{\"o}ning, Michael Josef},
  title     = {A light-addressable potentiometric sensor system for fast, simultaneous and spatial detection of the metabolic activity of biological cells},
  series = {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.)},
  journal   = {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.)},
  publisher = {IEEE},
  address   = {Piscataway},
  isbn      = {1-4244-0841-5},
  pages     = {1107 -- 1110},
  year      = {2007},
  language  = {en}
}
@article{WagnerMolinaYoshinobuetal.2007,
  author    = {Wagner, Torsten and Molina, Roberto and Yoshinobu, Tatsuo and Kloock, Joachim P. and Biselli, Manfred and Canzoneri, Michele and Schnitzler, Thomas and Sch{\"o}ning, Michael Josef},
  title     = {Handheld multi-channel LAPS device as a transducer platform for possible biological and chemical multi-sensor applications},
  series = {Electrochimica Acta. 53 (2007), H. 2},
  journal   = {Electrochimica Acta. 53 (2007), H. 2},
  isbn      = {0013-4686},
  pages     = {305 -- 311},
  year      = {2007},
  language  = {en}
}
@article{WallerBraunHojdisetal.2007,
  author    = {Waller, Mark P. and Braun, Heiko and Hojdis, Nils and B{\"u}hl, Michael},
  title     = {Geometries of Second-Row Transition-Metal Complexes from Density-Functional Theory},
  series = {Journal of Chemical Theory and Computation},
  volume    = {3},
  journal   = {Journal of Chemical Theory and Computation},
  number    = {6},
  issn      = {1549-9626},
  doi       = {10.1021/ct700178y},
  pages     = {2234 -- 2242},
  year      = {2007},
  language  = {en}
}
@article{WangDruckenmuellerElbersetal.2014,
  author    = {Wang, Ren-Qi and Druckenm{\"u}ller, Katharina and Elbers, Gereon and Guenther, Klaus and Crou{\´e}, Jean-Philippe},
  title     = {Analysis of aquatic-phase natural organic matter by optimized LDI-MS method},
  series = {Journal of mass spectrometry},
  volume    = {49},
  journal   = {Journal of mass spectrometry},
  number    = {2},
  publisher = {Wiley},
  address   = {Bognor Regis},
  issn      = {1096-9888},
  doi       = {10.1002/jms.3321},
  pages     = {154 -- 160},
  year      = {2014},
  abstract  = {The composition and physiochemical properties of aquatic-phase natural organic matter (NOM) are most important problems for both environmental studies and water industry. Laser desorption/ionization (LDI) mass spectrometry facilitated successful examinations of NOM, as humic and fulvic acids in NOM are readily ionized by the nitrogen laser. In this study, hydrophobic NOMs (HPO NOMs) from river, reservoir and waste water were characterized by this technique. The effect of analytical variables like concentration, solvent composition and laser energy was investigated. The exact masses of small molecular NOM moieties in the range of 200-1200 m/z were determined in reflectron mode. In addition, spectra of post-source-decay experiments in this range showed that some compounds from different natural NOMs had the same fragmental ions. In the large mass range of 1200-15 000 Da, macromolecules and their aggregates were found in HPO NOMs from natural waters. Highly humic HPO exhibited mass peaks larger than 8000 Da. On the other hand, the waste water and reservoir water mainly had relatively smaller molecules of about 2000 Da. The LDI-MS measurements indicated that highly humic river waters were able to form large aggregates and membrane foulants, while the HPO NOMs from waste water and reservoir water were unlikely to form large aggregates. Copyright © 2014 John Wiley \& Sons, Ltd.},
  language  = {en}
}