Imperial College London
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ProfessorMariaCharalambides

Faculty of Engineering, Department of Mechanical Engineering

Professor of the Mechanics of Materials
 
 
 
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Contact

 

+44 (0)20 7594 7246m.charalambides Website

 
 
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Location

 

516City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Skamniotis:2020:10.1016/j.ifset.2020.102510,
author = {Skamniotis, CG and Edwards, CH and Bakalis, S and Frost, G and Charalambides, MN},
doi = {10.1016/j.ifset.2020.102510},
journal = {Innovative Food Science & Emerging Technologies},
title = {Eulerian-Lagrangian finite element modelling of food flow-fracture in the stomach to engineer digestion},
url = {http://dx.doi.org/10.1016/j.ifset.2020.102510},
volume = {66},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Highly processed foods tend to form weak structures which breakdown rapidly in the gastrointestinal (GI) tract, often causing negative effects on human metabolism and health. Developing healthier foods has been limited by the lack of understanding of how foods are digested. Through computational modelling we reveal mechanical gastric food breakdown phenomena and relate food mechanical properties with performance during critical initial digestion stages. Our model relies strictly on a viscoplastic-damage constitutive law, calibrated via rheological experiments on an artificial biscuit bolus and validated by simulating cutting tests. Simulations suggest that bolus separation during bolus backward extrusion and/or indentation by peristaltic waves, and, bolus agglomeration due to hydrostatic compression near the pylorus, are two competing phenomena that can influence the bolus free surface to volume ratio. This showcases the importance of including mechanical aspects of breakdown when designing foods for controlled chemo-mechanical breakdown and associated nutrient release rates.
AU  - Skamniotis,CG
AU  - Edwards,CH
AU  - Bakalis,S
AU  - Frost,G
AU  - Charalambides,MN
DO  - 10.1016/j.ifset.2020.102510
PY  - 2020///
SN  - 1466-8564
TI  - Eulerian-Lagrangian finite element modelling of food flow-fracture in the stomach to engineer digestion
T2  - Innovative Food Science & Emerging Technologies
UR  - http://dx.doi.org/10.1016/j.ifset.2020.102510
UR  - http://hdl.handle.net/10044/1/85287
VL  - 66
ER  -
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