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Dielectric properties of process cheese from 0.3 to 3 Ghz

Everard, C., Fagan, C. ORCID: https://orcid.org/0000-0002-2101-8694, O'Donnell, C., O'Callaghan, D. and Lyng, J. (2006) Dielectric properties of process cheese from 0.3 to 3 Ghz. Journal of Food Engineering, 75 (3). pp. 415-422. ISSN 0260-8774

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To link to this item DOI: 10.1016/j.jfoodeng.2005.04.027

Abstract/Summary

Dielectric properties of 16 process cheeses were determined over the frequency range 0.3-3 GHz. The effect of temperature on the dielectric properties of process cheeses were investigated at temperature intervals of 10 degrees C between 5 and 85 degrees C. Results showed that the dielectric constant decreased gradually as frequency increased, for all cheeses. The dielectric loss factor (epsilon") decreased from above 125 to below 12 as frequency increased. epsilon' was highest at 5 degrees C and generally decreased up to a temperature between 55 and 75 degrees C. epsilon" generally increased with increasing temperature for high and medium moisture/fat ratio cheeses. epsilon" decreased with temperature between 5 and 55 degrees C and then increased, for low moisture/fat ratio cheese. Partial least square regression models indicated that epsilon' and epsilon" could be used as a quality control screening application to measure moisture content and inorganic salt content of process cheese, respectively. (c) 2005 Elsevier Ltd. All rights reserved..

Item Type:Article
Refereed:Yes
Divisions:Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences
ID Code:24057
Publisher:Elsevier

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