Authors: Sencer Buzrul Hami Alpas Alain Largeteau Gérard Demazeau
Publish Date: 2009/03/04
Volume: 229, Issue: 1, Pages: 127-131
Abstract
Escherichia coli ATCC 11775 and Listeria innocua ATCC 33090 in whole milk were inactivated by single and multipulsed up to 10 pulses high hydrostatic pressure HHP treatments Both bacteria showed similar resistance to single and multipulsed HHP The efficiency of pulsed pressure treatment depends on the combination of holding time of each pulse and number of pulses It was observed that multipulsed pressure treatment instead of traditional singlepulsed HHP could be used to pasteurize milk at a lower pressure level Nevertheless an optimization is necessary between the pulse holding time number of pulses and pressure levels to reach the desirable logreduction of microorganisms compatible with industrial applicationThis research work was developed in the scope of a thesis in cotutelle SB between the University Bordeaux 1 “Sciences and Technologies” and Middle East Technical University METU The French Embassy in Ankara Turkey is deeply acknowledged for this support This paper is dedicated in memory of Mr Pierre Tyndiuk technician of High Pressure Laboratory in University of Bordeaux
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