Resistance of cold- and starvation-stressed Vibrio vulnificus to heat and freeze-thaw exposure

被引:28
作者
Bang, W
Drake, MA [1 ]
机构
[1] Mississippi State Univ, Dept Food Sci & Technol, Mississippi State, MS 39762 USA
[2] N Carolina State Univ, Dept Food Sci, Raleigh, NC 27695 USA
关键词
D O I
10.4315/0362-028X-65.6.975
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
The effects of cold storage and starvation on the subsequent heat resistance and freeze-thaw resistance of Vibrio vulnificus were studied. Three strains of V. vulnificus were evaluated. Cold stress had no effect on freeze-thaw resistance (P > 0.05). Starvation enhanced freeze-thaw resistance for one strain compared to controls (P < 0.05). V. vulnificus was not heat resistant; control populations were inactivated within 12 min at 47degreesC. Starvation increased heat tolerance for one strain, but differences were small from a processing perspective (P < 0.05). Cold stress had no effect on heat resistance (P > 0.05). Cold adaptation (holding 4 h at 15degreesC) enhanced cold temperature (5degreesC) tolerance. This information will be helpful in the development of methods to minimize V. vulnificus risk.
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页码:975 / 980
页数:6
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