Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 328510
Title On the potential of uneven heating in heterogeneous food media with dielectric heating
Author(s) Veen, M.E. van der; Goot, A.J. van der; Vriezinga, C.A.; Meester, J.W.G. de; Boom, R.M.
Source Journal of Food Engineering 63 (2004)4. - ISSN 0260-8774 - p. 403 - 412.
DOI https://doi.org/10.1016/j.jfoodeng.2003.08.011
Department(s) Food Process Engineering
Biophysics
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2004
Keyword(s) microorganisms - microwaves - catalysis
Abstract A dynamic model was developed describing dielectric heating dynamics of a heterogeneous material, in which the dispersed phase heats more quickly than the surrounding phase. The model includes effects of scattering by small particles, absorption and differences in thermal and conduction properties, as well as domain size. The model shows that the smallest domain sizes that can be heated selectively are determined by dielectric and thermal properties of both domains and the applied field strength. In the case of food products, it can be concluded that the minimal size at which significant temperature differences can occur is about 1 mm applying current available microwave technology. However, in the case of pulsed fields, the domains that can be heated selectively can be orders of magnitude smaller than with constant fields, without requiring higher overall energy inputs. (C) 2003 Elsevier Ltd. All rights reserved.
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