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Food Science and Technology International
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Review: Application of Pulsed Electric Fields in Egg and Egg Derivatives

F. Sampedro

Instituto de Agroquímica y Tecnología de Alimentos, CSIC, Apartado postal 73, 46100 Burjassot, Valencia, Spain

D. Rodrigo

Instituto de Agroquímica y Tecnología de Alimentos, CSIC, Apartado postal 73, 46100 Burjassot, Valencia, Spain

A. Martínez

Instituto de Agroquímica y Tecnología de Alimentos, CSIC, Apartado postal 73, 46100 Burjassot, Valencia, Spain

G. V. Barbosa-Cánovas

Department of Biological Systems Engineering, Washington State University, Pullman, WA, 99164-6120, USA

M. Rodrigo

Instituto de Agroquímica y Tecnología de Alimentos, CSIC, Apartado postal 73, 46100 Burjassot, Valencia, Spain, mrodrigo{at}iata.csic.es

This work overviews works published on the application of pulsed electric fields (PEF) in egg and egg derivatives, grouped by subject, and arranged chronologically in terms of the factor studied (microorganisms, quality aspects, shelf life and structural changes in gel formation properties). The inactivation of microorganisms by PEF in egg is very considerable, 3.5 decimal reductions in egg white were achieved by PEF in Salmonella enteritidis, 5.5 log reductions of Listeria innocua by means of a synergistic effect of PEF and nisin in liquid whole egg, and 5.6 log reductions of Escherichia coli in beaten fresh liquid egg by PEF treatment applied continuously or discontinuously in five steps. The shelf life of PEF-treated fresh liquid egg was extended to 4 weeks in refrigeration, and quality (colour, viscosity and sensory attributes) was not affected by PEF treatment. PEF treatment did not cause notable changes in proteins in a solution of ovalbumin and dialysed fresh egg white. However, some structural changes and functional modifications were observed in fresh egg white as a result of PEF treatment. The texture and microstructure of gels were affected by the application of PEF, and therefore PEF treatment conditions in egg white must be optimised to minimise possible modifications.

Key Words: pulsed electric field • egg • microbial inactivation • preservation

Food Science and Technology International, Vol. 12, No. 5, 397-405 (2006)
DOI: 10.1177/1082013206070430
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