The MRI-Food team aims to increase our understanding of the structure of natural and processed agricultural and agri-food products (bioproducts) at different scales.
The purpose of the research is to improve understanding and model structural changes along with transfers of matter and energy with the aim of optimizing and improving the product quality as well as processes within the agri-food industry.
The team is therefore developing low field Nuclear Magnetic Resonance (NMR) and MRI methods that they are then adapting with customized devices to recreate typical processing currently used in the industry. The purpose of this approach is to develop thorough metrological expertise in the type of information acquired (chemical, biological and physical) and scales studied (from molecular to macroscopic) while remaining as close as possible to the scale of naturally occurring matrices within the agricultural and agri-food industries (without sampling.)
Examples of research
Selected publications by the team
RONDEAU MOURO, C., GODFRIN, C., CAMBERT, M., ROUILLAC, J., DIASCORN, Y., LUCAS, T., GRENIER, D. – 2019. Characterization of gluten free bread crumb baked at atmospheric and reduced pressures using TD NMR. Magnetic Resonance in Chemistry, Special issue, p. 1-12
COLLEWET, G., MOUSSAOUI, S., DELIGNY, C., LUCAS,T., IDIER, J. - 2018. Multi-tissue partial volume quantification in multi-contrast MRI using an optimised spectral unmixing approach. Magnetic Resonance Imaging, vol. 49, p. 39-46
LUCAS, T., COLLEWET, G., BOUSQUIERES, J., DELIGNY, C. - 2018. The size of eye-shaped bubbles in Danish pastry in relation to the size of fat fragments; a reverse engineering approach of the alveolar structure. Journal of Food Engineering, vol. 237, p. 194-203
SORIN, C., MARIETTE, F., MUSSE, M., LEPORT, L, CRUZ, F., YVIN, J. - 2018. Leaf development monitoring and early detection of water deficiency by low field nuclear magnetic resonance relaxation in Nicotiana tabacum Plants. Applied Sciences-Basel, vol. 8, n° 6
The team’s research is currently unique in Europe and its use of partnerships and transfers has naturally led it
to contribute to the establishment of the PRISM national technological platform (Rennes Platform for Imaging and Structural and Metabolic Spectroscopy).
Nuclear Magnetic Resonance is a powerful tool that allows access to molecular and macroscopic information, making it possible to characterize and monitor physical and chemical phenomena that exist across a wide range of length and time scales. They provide information on structures and dynamics of structures at the molecular and micronic level (fusion, crystallization, coagulation, gelification, location and interaction of water with solutes and macromolecules, etc.). MRI imaging gives access to the structural heterogeneity of products on a millimetric scale (tissue distribution, water or fat crystallization, etc.) and to the concentration, speed and temperature profiles of products undergoing processing.
The MRI-Food research team conducts research as part of an ISO 9001 : v. 2015 certified quality management system.
Recent PhD dissertations
"Development of new NMR methods for the quantitative and multiscale measurement of water transfer in starch-based matrices" supported by Ruzica Kovrlija. This work has proposed two new methodologies to study the transfer of water and matter over a wide range of time and distance. The first was to implement new 2D NMR signal acquisition and processing methods and the second uses new methods in micro-imaging.
"Subcellular organization and metabolic remobilization during senescence in rapeseed: effects of abiotic stress" supported by Clément Sorin. This thesis, conducted in collaboration with the UMR IGEPP (Alain Bouchereau & Laurent Leport) demonstrates the potential of NMR for the study and characterization of the senescence of rapeseed leaves. To consult the dedicated page "Laboratory RMN Mobile to "Mobile Laboratory RMN to follow the development of the colza in field"
"Characterization of the spatial microstructure of the apple in relation to its mechanical properties by quantitative methods of MRI" this thesis subject supported by Guillaume Winisdorffer. This thesis was done in collaboration with the UR BIA in Nantes (Marc Lahaye). This work presents new magnetic resonance imaging methods for the quantification of the watery conditions of apples in relation to the mechanical properties of tissues.
"Modeling and visualization of bubble growth in an evolutionary and heterogeneous viscoelastic medium" supported by Yannick Laridon. This work, carried out in collaboration with the company Bel, allowed us to characterize, model and prioritize the mechanisms involved in the growth of bubbles in a pressed cheese at the scale of the bubble.
Facilities and equipment
Christian El Hajj*