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Applied and Environmental Microbiology, June 2004, p. 3781-3784, Vol. 70, No. 6
0099-2240/04/$08.00+0     DOI: 10.1128/AEM.70.6.3781-3784.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

Short-Duration Low-Direct-Current Electrical Field Treatment Is a Practical Tool for Considerably Reducing Counts of Gram-Negative Bacteria Entrapped in Gel Beads

R. Zvitov, C. Zohar-Perez, and A. Nussinovitch*

Institute of Biochemistry, Food Science and Nutrition, Faculty of Agricultural, Food and Environmental Quality Sciences, The Hebrew University of Jerusalem, Rehovot 76100, Israel

Received 22 August 2003/ Accepted 8 March 2004

Application of a direct-current electrical field for very short times can serve as a practical nonthermal procedure to reduce or modify the microbial distribution in gel beads. The viability of Escherichia coli and Serratia marcescens entrapped in alginate and agarose beads decreases as the field intensity and duration of electrical field increase.

* Corresponding author. Mailing address: Institute of Biochemistry, Food Science and Nutrition, Faculty of Agricultural, Food and Environmental Quality Sciences, The Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel. Phone: 972-8-948-9016. Fax: 972-8-936-3208. E mail: nussi{at}agri.huji.ac.il.

Applied and Environmental Microbiology, June 2004, p. 3781-3784, Vol. 70, No. 6
0099-2240/04/$08.00+0     DOI: 10.1128/AEM.70.6.3781-3784.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.





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