RELATION BETWEEN THERMAL-RESISTANCE AND DPA CONTENT IN VARIANTS OF THE SAME STRAINS OF BACILLUS-STEAROTHERMOPHILUS SPORES

被引：4
|
作者：
FERNANDEZ, PS [1 ]
OCIO, MJ [1 ]
MARTINEZ, A [1 ]
机构：
[1] CSIC,CTR EDAFOL & BIOL APLICADA SEGURA,E-30080 MURCIA,SPAIN
来源：
LETTERS IN APPLIED MICROBIOLOGY | 1994年 / 19卷 / 02期
关键词：
D O I：
10.1111/j.1472-765X.1994.tb00920.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：
Rough and smooth variants of Bacillus stearothermophilus strains ATCC 12976 and 12980 were isolated. These variants showed morphologically different colonies. In both strains the rough variants were less heat-resistant than the smooth ones, and their activation occurred in a shorter time; on the other hand, their dipicolinic acid (DPA) content was higher. These results indicate that a relationship between higher DPA content and higher thermal resistance does not exist. Therefore, this evidence supports the hypothesis that DPA is not the determining factor in the degree of spore heat resistance but that it could, instead, have a role in maintaining thermal resistance obtained by other means.
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页码：118 / 120
页数：3
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