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Resistance Variation of Salmonella enterica Serovars to Pulsed Electric Fields Treatments
Author(s) -
ÁLvarez I.,
Mañas P.,
Condón S.,
Raso J.
Publication year - 2003
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.2003.tb05765.x
Subject(s) - serotype , salmonella , salmonella enterica , salmonella enteritidis , microbiology and biotechnology , population , biology , chemistry , food science , bacteria , medicine , genetics , environmental health
Inactivation of Salmonella serovar Enteritidis and Salmonella serovar Typhimurium by pulsed electric fields has been investigated. A tertiary model based on the Weibull distribution ( n = 0.262) and on a new parameter ( Z PEF ), accurately described the kinetics of inactivation of these microorganisms among 15 and 28 kV/cm. In the range of 19 to 28 kV/cm, this model also described previously published data of inactivation of serovar Senftenberg when the n value was set at 0.437. The Z PEF value for the 3 Salmonella serovars was 15.787 kV/cm. From 19 to 28 kV/cm, the time to inactivate 5 Log 10 cycles of the population of serovar Enteritidis was 2.06 and 2.66 times lower than that to inactivate serovar Typhimurium and serovar Senftenberg, respectively.