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Institute of Applied Biosciences

Department of Food Chemistry and Phytochemistry

Adenauerring 20a, Building 50.41

76131 Karlsruhe

Phone: +49 721 608 44241

Fax: +49 721 608 47255



Institut für Angewandte Biowissenschaften

Abteilung für Lebensmittelchemie und Phytochemie

Adenauerring 20a, Gebäude 50.41

76131 Karlsruhe

Tel.: +49 721 608 44241

Fax: +49 721 608 47255



Jörg Gottmann, Frauke Herbi and Franziska Münkel started on their MSc theses, welcome to our group!

Lea Fels starts on her PhD studies, welcome to our group!

Lena Bitenc, Christina Decker, Hendrik Eichhöfer, Anja Fischer, Svenja Heizmann, Melinda Sattler and Sarah Schleicher finished their MSc theses, many congratulations!


Congratulations to Martin Waterstraat on successfully defending his PhD degree!


Congratulations to Felix Urbat on your wedding! Wishing you all the happiness in the world!

Lena Bitenc, Christina Decker, Hendrik Eichhöfer, Anja Fischer, Svenja Heizmann, Melinda Sattler and Sarah Schleicher started on their MSc theses - welcome to our Group!

Benjamin Bindereif, Lea Fels, David Kahl, Toni Steiniger and Antje Trabert finished their MSc theses, congratulations!

Dr. Daniel Wefers got married in June, many congratulations and we wish you all the best and love for the future!


Benjamin Bindereif, Lea Fels, David Kahl, Toni Steiniger and Antje Trabert started on their MSc theses - welcome to the group!

Mirjam-Anna Epp, Thomas Kauz and Johanna Mailänder finished their diploma theses, congratulations!

Rebecca Brendel, Sylvia Dreßler, Cora Hannes, Anna-Lena Hau, Philipp Schlumpberger and Karola Schrag finished their MSc theses, congratulations!


Congratulations to Rachel Schendel on successfully defending her PhD degree!


The XIII International Conference on the Applications of Magnetic Resonance in Food Science in Karlsruhe was a success (June 07-June 10, 2016)! The proceedings volume will be published by the end of 2016. For more information please visit: https://mrfood2016.gvt.org

Jan Steck starts on his PhD studies, welcome (back) to our group!

Rebecca Brendel, Sylvia Dreßler, Cora Hannes, Anna-Lena Hau, Philipp Schlumpberger, Karola Schrag and Kevin Schu start on their MSc theses - welcome to the group!

Matthias Breuer, Karin Jung and Hannah Renner finished their diploma theses, congratulations!


Congratulations to Judith Schäfer on successfully defending her PhD degree!


Daniel Wefers successfully defended his doctoral dissertation, many congratulations!

Mirjam-Anna Epp, Thomas Kauz and Johanna Mailänder started their diploma theses.


Natalie Britscho and Laura Gerster finished their diploma theses, while Matthias Breuer, Karin Jung and Hannah Renner started their diploma theses.


Andreas Becker is back in the group and starts on his PhD studies. Welcome back!





Our research is focused on the plant cell wall, its constituents and their functions in the plant, in plant-based foods, and in human nutrition. The plant cell wall determines size and shape of a cell, provides strengths, protects against pathogens and abiotic stresses, and controls transport processes. The plant cell wall as a whole is most important for the texture of plant-based foods such as fruits and vegetables. In addition, individual constituents determine food texture, e.g. arabinoxylans in bread, and/or can be used as thickening or gelling agents, e.g. pectins. Because cell walls are the main source of dietary fiber for most of the population, cell components, which belong to the dietary fiber complex and generate interest for their health benefits, e.g. non-starch polysaccharides and lignin, are among our target molecules. Besides food applications, cell walls and their constituents are in the focus as a source of biofuels. The physicochemical properties of the cell wall polymers are not only dependent on the chemical structures of the individual compounds but also on their interactions. Thus, our group also studies plant cell wall cross-links such as oligomeric hydroxycinnamic acids and their impact on the cell wall and plant foods. Besides cell wall polymers and their cross-links, we are interested in certain low-molecular weight phytochemicals, their formation as a response to different types of stress, their fate during food processing, and their potential physiological effects in animals and humans.



Recent Publications


Schäfer, J.; Bunzel, M.* Maturation related modifications of cell wall structures of kohlrabi (Brassica oleracea var. gongylodes). Eur. Food Res. Technol. 2017, in press.


Dhakarey, R.; Raorane, M.L.; Treumann, T.; Peethambaran, P.K.; Schendel, R.R.; Sahi, V.P.; Hause, B.; Bunzel, M.; Henry, A.; Kohli, A.; Riemann, M.* Functional and molecular analysis of the rice mutant cpm2 suggests a negative regulatory role of jasmonic acid in drought tolerance. Front. Plant Sci. 2017, in press.


Reichardt, N.; Vollmer, M.; Holtrop, G.; Farquharson, F.; Wefers, D.; Bunzel, M.; Duncan, S.H.; Drew, J.E.; Williams, L.; Milligan, G.; Preston, T.; Morrison, D.; Flint, H.J.; Louis, P.* Specific substrate-driven changes in human faecal microbiota composition contrast with functional redundancy in short-chain fatty acid production. ISME J. 2017, in press.


Fraunhofer, M.E.; Geissler, A.J.; Wefers, D.; Bunzel, M.; Jakob, F.*; Vogel, R.F. Characterization of β-glucan formation by Lactobacillus brevis TMW1.2112 isolated from slimy spoiled beer. Int. J. Biol. Macromolec. 2017, in press.


Brandt, J.U.; Jakob, F.*; Wefers, D.; Bunzel, M.; Vogel, R.F. Characterization of an acetan-like heteropolysaccharide produced by Kozakia baliensis NBRC 16680. Int. J. Biol. Macromolec. 2017, in press.


Wefers, D.*; Dong, J.; Abdel-Hamid, A.M.; Müller Paul, H.; Pereira, G.V.; Han, Y.; Dodd, D.; Baskaran, R.; Mayer, B.; Mackie, R.I.; Cann, I.* Enzymatic mechanism for arabinan degradation and transport in the thermophilic bacterium Caldanaerobius polysaccharolyticus. Appl. Environ. Microbiol. 2017, in press. 


Wefers, D.; Cavalcante, J.J.V.; Schendel, R.R.; Deveryshetty, J.; Wang, K.; Wawrzak, Z.; Mackie, R.I.; Koropatkin, N.M.; Cann, I.* Biochemical and structural analyses of two cryptic esterases in Bacteroides intestinalis and their synergistic activities with cognate xylanases. J. Mol. Biol. 2017, in press.


Beer, F.; Urbat, F.; Steck, J.; Huch, M.; Bunzel, D.*; Bunzel, M.; Kulling, S.E. Metabolism of food-borne heterocyclic aromatic amines by Lactobacillus reuteri DSM 20016. J. Agric. Food Chem. 2017, 65, 6797-6811.


Schäfer, J.; Trierweiler, B.; Bunzel, M.* Maturation-related changes of carrot lignins. J. Sci. Food Agric. 2017, in press.


Leiter, A.*; Mailänder, J.; Wefers, D.; Bunzel, M.; Gaukel, V. Influence of acid hydrolysis and dialysis of κ-carrageenan on its ice recrystallization inhibition activity. J. Food Eng. 2017, 209, 26-35.


Dilokpimol, A.; Mäkelä, M.R.; Mansouri, S.; Belova, O.; Waterstraat, M.; Bunzel, M.; de Vries, R.P.; Hilden, K.* Expanding the feruloyl esterase gene family of Aspergillus niger by characterization of a feruloyl esterase, FaeC. New Biotechnol. 2017, 37, 200-209.


Mack, C; Wefers, D.; Schuster, P.; Weinert, C.H.*; Egert, B.; Bliedung, S.; Trierweiler, B.; Muhle-Goll, C.; Bunzel, M.; Luy, B.; Kulling, S.E.;  Untargeted multi-platform analysis of the metabolome and the non-starch polysaccharides of kiwifruits during postharvest ripening. Postharvest Biol. Technol. 2017, 125, 65-76.


Grossmann, L.; Wefers, D.; Bunzel, M.; Weiss, J.; Zeeb, B.* Accessibility of transglutaminase to induce protein crosslinking in complex food matrices - Influence of network structure. LWT - Food. Sci. Technol. 2017, 75, 271-278.


Schäfer, J.; Stanojlovic, L.; Trierweiler, B.; Bunzel, M.* Storage related changes of cell wall based dietary fiber components of broccoli (Brassica oleracea var. italica) stems. Food Res. Int. 2017, 93, 43-51.


Ackermann, S.; Dolsophon, K.; Monakhova, Y.B.; Steliopoulos, P.; Kuballa, T.; Reusch, H.; Thongpanchang, T.; Bunzel, M.; Lachenmeier, D.W.* Automated multicomponent analysis of soft drinks using 1D ¹H and 2D ¹H-¹H J-resolved NMR spectroscopy. Food Anal. Method. 2017, 10, 827-836.


Wefers, D.; Bunzel, M.* NMR-spectroscopic profiling of arabinan and galactan structural elements. J. Agric. Food Chem2016, 64, 9559-9568.


Soukup, S.T.; Kohn, B.N.; Pfeiffer, E.; Geisen, R.; Metzler, M.; Bunzel, M.; Kulling, S.E.; * Sulfoglucosides as novel modified forms of the mycotoxins alternariol and alternariol monomethyl ether. J. Agric. Food Chem. 2016, 64, 8892-8901.


Waterstraat, M.; Hildebrand, A.; Rosler, M.; Bunzel, M.* Development of a QuEChERS-based stable-isotope dilution LC-MS/MS method to quantitate ferulic acid and its main microbial and hepatic metabolites in milk. J. Agric. Food Chem. 2016, 64, 8667-8677.


Schäfer, J.; Brett, A.; Trierweiler, B.; Bunzel, M.* Characterization of cell wall composition of radish (Raphanus sativus L. var. sativus) and maturation related changes. J. Agric. Food Chem. 2016, 64, 8625-8632.


Schendel, R.R.; Puchbauer, A.-K., Bunzel, M.* Glycoside hydrolase family 51 α-L-arabinofuranosidases from Clostridium thermocellum and Cellvibrio japonicas release O–5-feruloylated arabinose. Cereal Chem. 2016, 93, 650-653.


Waterstraat, M.; Bunzel, D.; Bunzel, M.* Identification of 8-O-4/8-5(cyclic)- and 8-8(cyclic)/5-5-coupled dehydrotriferulic acids, naturally occurring in cell walls of mono- and dicotyledonous plants. J. Agric. Food Chem. 2016, 64, 7244-7250.


Schendel, R.R.; Puchbauer, A.-K.; Britscho, N.; Bunzel, M.* Feruloylated wheat bran arabinoxylans: Isolation and characterization of acetylated and O–2-monosubstituted structures. Cereal Chem. 2016, 93, 493-501.


Wefers, D.; Bunzel, M.* Arabinan and galactan oligosaccharide profiling by high-performance anion-exchange chromatography with pulsed amperometric detection (HPAEC-PAD). J. Agric. Food Chem. 2016, 64, 4656-4664.


Nieter, A.; Kelle, S.; Takenberg, M.; Linke, D.; Bunzel, M.; Popper, L.; Berger, R.G. * A chlorogenic acid esterase from Ustilago maydis with a potential use in baking. Food Chem. 2016, 209, 1-9.


Kantar, M.; Tyl, C.; Dorn, K.; Zhang, X.; Jungers, J.; Kaser, J.; Schendel, R.; Eckberg, J.; Runck, B.; Bunzel, M.; Jordan, N.; Stupar, R.; Marks, D.; Anderson, J.; Johnson, G.; Sheaffer, C.; Schoenfuss, T.; Ismail, B.; Heimpel, G.; Wyse, D. * Perennial grain and oliseed crops. Annu. Rev. Plant Biol. 2016, 67, 703-729.


Schäfer, J.; Wagner, S.; Trierweiler, B.; Bunzel, M.* Characterization of cell wall components and their modifications during post-harvest storage of Asparagus officinalis L. demonstrates storage-related changes in dietary fiber composition. J. Agric. Food Chem. 2016, 64, 478-486.


Schendel R.R; Meyer, M.R.; Bunzel, M.* Quantitative profiling of feruloylated arabinoxylan side chains from graminaceous cell walls. Front. Plant Sci. 2016, 6, 1249 (11 pages).