Dr. Jotam Bergfreund

Additional information

Curriculum Vitae

Jotam Bergfreund studied Food Science and Engineering at ETH Zürich in Switzerland and at Wageningen University and Research in the Netherlands. He received his Ph.D. in Food Processing and Engineering (Prof. Peter Fischer and Prof Erich J. Windhab) with a special focus on adsorption phenomena and rheology in emulsions and foams. Jotam collected a broad knowledge of the adsorption, network formation, and functionalities of surfactants, particles, and proteins to fluid interfaces. 

With one year of industry experience, Jotam returned to ETH Zürich as a Post-Doc, working on a collaborative project between the Laboratory of Exercise and Health (Prof. Katrien de Bock) and the Sustainable Food Processing Laboratory (Prof. Alexander Mathys). His current research involves extracting and refining plant proteins from food side streams to develop healthy plant-based dairy products, primarily focusing on oat and potato side streams.

Publications

 First author publications:

J. Bergfreund, C. Wobill, B. Hohermuth, F. M. Evers, and P. Fischer. Effect of micro-sized plastic debris on foams from breaking waves. (submitted), 2022

N. Nussbaum*, J. Bergfreund*, J. Vialetto, L. Isa, and P. Fischer. Microgels adsorption and rheology at different oil-water interfaces. Colloids and Surfaces B: Biointerfaces, 217:112595, 2022

J. Bergfreund, P. Bertsch, and P. Fischer. Effect of the hydrophobic phase on interfacial phenomena of surfactants, proteins, and particles at fluid interfaces. Current Opinion in Colloid & Interface Science, 56:101509, 2021

J. Bergfreund, S. Siegenthaler, V. Lutz-Bueno, P. Bertsch, and P. Fischer. Surfactant adsorption to different fluid interfaces. Langmuir, 37(22):6722–6727, 2021

J. Bergfreund, M. Diener, T. Geue, N. Nussbaum, N. Kummer, P. Bertsch, G. Nyström, and P. Fischer. Globular protein assembly and network formation at fluid interfaces: Effect of oil. Soft Matter, 17(6):1692–1700, 2021

J. Bergfreund, P. Bertsch, and P. Fischer. Adsorption of proteins to fluid interfaces: Role of the hydrophobic subphase. Journal of Colloid and Interface Science, 584:411–417, 2021

J. Bergfreund, Q. Sun, P. Fischer, and P. Bertsch. Adsorption of charged anisotropic nanoparticles at oil–water interfaces. Nanoscale Advances, 1(11):4308–4312, 2019

J. Bergfreund, P. Bertsch, S. Kuster, and P. Fischer. Effect of oil hydrophobicity onthe adsorption and rheology of β-lactoglobulin at oil–water interfaces. Langmuir, 34(16):4929–4936, 2018

 Co-authored publications:

J. Vialetto, N. Nussbaum, J. Bergfreund, P. Fischer, and L. Isa. Influence of the interfacial tension on the microstructural and mechanical properties of microgels at fluid interfaces. Journal of Colloid and Interface Science, 608:2584–2592, 2022

L. Grob, L. Zeneli, E. Ott, J. Vialetto, J. Bergfreund, Y. Takeda, and E. J. Windhab. Filter-less separation technique for micronized anthropogenic polymers from artificial seawater. Environmental Science: Water Research & Technology, 7:2372–2380, 2021

P. Bertsch, J. Bergfreund, E. J. Windhab, and P. Fischer. Physiological fluid interfaces: Functional microenvironments, drug delivery targets, and first line of defense. Acta Biomaterialia, 130:32–53, 2021

L. Böcker, P. Bertsch, D. Wenner, S. Teixeira, J. Bergfreund, S. Eder, P. Fischer, and A. Mathys. Effect of arthrospira platensis microalgae protein purification on emulsification mechanism and efficiency. Journal of Colloid and Interface Science, 584:344–353, 2021

P. A. Rühs, J. Bergfreund, P. Bertsch, S. Gstöhl, and P. Fischer. Complex fluids in animal survival strategies. Soft Matter, 17:3022–3036, 2021

J. S. Hong, J. Bergfreund, and P. Fischer. Complex emulsion stabilization behavior of clay particles and surfactants based on an interfacial rheological study. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 602:125121, 2020

K. Mishra, J. Bergfreund, P. Bertsch, P. Fischer, and E. J. Windhab. Crystallization induced network formation of tri-and monopalmitin at the mct oil/air interface. Langmuir, 26(36):7566–7572, 2020

M. Diener, J. Adamcik, J. Bergfreund, S. Catalini, P. Fischer, and R. Mezzenga. Rigid, fibrillar quaternary structures induced by divalent ions in a carboxylated linear polysaccharide. ACS Macro Letters, 9(1):115–121, 2020

L. Dai, J. Bergfreund, C. L. Reichert, P. Fischer, and J. Weiss. Shear rheological properties of acid hydrolyzed insoluble proteins from chlorella protothecoides at the oil-water interface. Journal of Colloid and Interface Science, 551:297–304, 2019

J. S. Hong, H. J. Kong, K. Hyun, J. Bergfreund, P. Fischer, and K. H. Ahn. Rheological analysis of oil–water emulsions stabilized with clay particles by laos and interfacial shear moduli measurements. Rheologica Acta, 58(8):453–466, 2019

P. Bertsch, A. Thoma, J. Bergfreund, T. Geue, and P. Fischer. Transient measurement and structure analysis of protein–polysaccharide multilayers at fluid interfaces. Soft Matter, 15(31):6362–6368, 2019

I. Martiel, N. Baumann, J. J. Vallooran, J. Bergfreund, L. Sagalowicz, and R. Mezzenga. Oil and drug control the release rate from lyotropic liquid crystals. Journal of Controlled Release, 204:78–84, 2015