Inactivation of Staphylococcus aureus and Salmonella enteritidis in tryptic soy broth and caviar samples by high pressure processing

被引:18
|
作者
Fioretto, F [1 ]
Cruz, C
Largeteau, A
Sarli, TA
Demazeau, G
El Moueffak, A
机构
[1] Bordeaux IV, IUT Perigueux, ERAP, F-24019 Perigueux, France
[2] Inst Chim Mat Condensee Bordeaux, Grp Hautes Press, Pessac, France
[3] Ecole Natl Super Chim & Phys Bordeaux, Pessac, France
[4] Univ Naples Federico II, Dept Inspect Foods Anim Origin, Naples, Italy
关键词
high pressure processing; Staphylococcus aureus; Salmonella enteritidis; tryptic soy broth; caviar; pressure cycles;
D O I
10.1590/S0100-879X2005000800015
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
We studied the action of high pressure processing on the inactivation of two foodborne pathogens, Staphylococcus aureus ATCC 6538 and Salmonella enteritidis ATCC 13076, suspended in a culture medium and inoculated into caviar samples. The baroresistance of the two pathogens in a tryptic soy broth suspension at a concentration of 10(8)-10(9) colony-forming units/ml was tested for continuous and cycled pressurization in the 150- to 550-MPa range and for 15-min treatments at room temperature. The increase of cycle number permitted the reduction of the pressure level able to totally inactivate both microorganisms in the tryptic soy broth suspension, whereas the effect of different procedure times on complete inactivation of the microorganisms inoculated into caviar was similar.
引用
收藏
页码:1259 / 1265
页数:7
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