THERMAL-DENATURATION AND LOSS OF VIABILITY IN ESCHERICHIA-COLI AND BACILLUS-STEAROTHERMOPHILUS

被引：30
|
作者：
MACKEY, BM [1 ]
MILES, CA [1 ]
SEYMOUR, DA [1 ]
PARSONS, SE [1 ]
机构：
[1] UNIV BRISTOL, DEPT VET MED, MUSCLE & COLLAGEN GRP, BRISTOL BS18 7DY, ENGLAND
来源：
LETTERS IN APPLIED MICROBIOLOGY | 1993年 / 16卷 / 02期
关键词：
D O I：
10.1111/j.1472-765X.1993.tb00341.x
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：
When Escherichia coli was heated at 10-degrees-C/min in a differential scanning calorimeter, the onset of irreversible thermal denaturation occurred at 51-degrees-C, about 5-degrees-C above the maximum growth temperature. The temperature at which death rate was maximal (63-degrees-C) coincided with the thermogram peak caused by denaturation of the 30S ribosomal subunit. The maximum death rate in vegetative cells of Bacillus stearothermophilus occurred at the higher temperature of 71-degrees-C which also coincided with the leading edge of the main thermogram peak.
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页码：56 / 58
页数：3
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