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Application of pulsed electric fields with square wave pulse to milk inoculated with E. coli, P. fluorescens, and B. stearothermophilus

Title
Application of pulsed electric fields with square wave pulse to milk inoculated with E. coli, P. fluorescens, and B. stearothermophilus
Authors
Shin J.-K.Jung K.-J.Pyun Y.-R.Chung M.-S.
Ewha Authors
정명수
SCOPUS Author ID
정명수scopus
Issue Date
2007
Journal Title
Food Science and Biotechnology
ISSN
1226-7708JCR Link
Citation
vol. 16, no. 6, pp. 1082 - 1084
Indexed
SCIE; SCOPUS; KCI WOS scopus
Abstract
Ultra-high temperature (UHT) processed full fat milk inoculated with Escherichia coli, Pseudomonas fluorescens, and Bacillus stearothermophilus was exposed to 30-60 kV/cm square wave pulsed electric field (PEF) with 1 μsec pulse width, and 26-210 μsec treatment time in a continuous PEF treatment system. Eight log reduction was obtained for E. coli and P fluorescens and 3 logs reduced for B. stearothermophilus under PEF treatment conditions of 210 μsec treatment time, 60 kV/cm pulse intensity at 50°C. There was no significant change in pH and titration acidity of milk after PEF treatment. The electrical energy required to achieve 8 log reduction for E.coli and P fluorescens was estimated to be about 0.74 kJ/L. © The Korean Society of Food Science and Technology.
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엘텍공과대학 > 식품공학전공 > Journal papers
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