print small

Participating Countries:

Algeria

Argentina

Australia

Austria

Belgium

Bosnia and Herzegovina

Bulgaria

Croatia

Czech Republic

Denmark

Finland

France

FYR of Macedonia

Germany

Greece

Iceland

Ireland

Israel

Italy

Lithuania

Morocco

Netherlands

New Zealand

Poland

Portugal

Romania

Russian Federation

Serbia

Slovenia

Spain

Sweden

Switzerland

Turkey

Ukraine

United Kingdom

United States

Member area provided by LTFE
COST is supported by the EU Framework Programme Horizon 2020
This website is supported by COST
05/05/2014 (Added to site)
Author(s): Mahnič-Kalamiza, S.; Vorobiev, E.

Dual-porosity model of liquid extraction by pressing from biological tissue modified by electroporation

Journal: Journal of Food Engineering, 137/1 (2014), pp. 76-87
DOI: 10.1016/j.jfoodeng.2014.03.035
Request reprint  |  Tell your friend  | 

Abstract: The objective of this study is to provide insight into the phenomena related with juice expression from electroporated tissue. We propose an analytical model and study consolidation behaviour of a block of tissue during pressing; before and after electroporation. By the dual-porosity approach, we treat compressibility and hydraulic permeability of intracellular and extracellular space separately. Initial parameter estimations are based on previously published studies (for hydraulic permeability), or analysis of modelled data (for compressibility moduli). Good agreement between simulations and experiments performed is then obtained by optimization (i.e. fitting). Impact of electroporation on membrane permeability is theoretically estimated and elucidated via the extraction–consolidation model; results are compared with experimental kinetics for validation and evaluation of model performance. Permeability coefficient estimates from literature proved valuable as initial approximations, and the model results were able to fit experimental data with high accuracy, clearly demonstrating the power of the proposed approach.



Project Office

Working groups

Steering Committee

Founding members

DC Rapporteurs

Related sites: