Efficiency of pulse pressure treatment for inactivation of Escherichia coli and Listeria innocua in whole milk
Language
en
Article de revue
This item was published in
European Food Research and Technology. 2009, vol. 229, n° 1, p. 127-131
Springer Verlag (Germany)
English Abstract
Escherichia coli ATCC 11775 and Listeria innocua ATCC 33090 in whole milk were inactivated by single- and multi-pulsed (up to 10 pulses) high hydrostatic pressure (HHP) treatments. Both bacteria showed similar resistance ...Read more >
Escherichia coli ATCC 11775 and Listeria innocua ATCC 33090 in whole milk were inactivated by single- and multi-pulsed (up to 10 pulses) high hydrostatic pressure (HHP) treatments. Both bacteria showed similar resistance to single- and multi-pulsed 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 multi-pulsed pressure treatment instead of traditional single-pulsed 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 log-reduction of microorganisms compatible with industrial application.Read less <
English Keywords
High hydrostatic pressure
Pressure pulse
Milk
Escherichia coli
Listeria innocua
Origin
Hal imported