TIME OF GROWTH-MODEL FOR PROTEOLYTIC CLOSTRIDIUM-BOTULINUM

被引：29

作者：

WHITING, RC

CALL, JE

机构：

[1] USDA-ARS, North Atlantic Area, Eastern Regional Research Center, Philadelphia, PA 19118

来源：

FOOD MICROBIOLOGY | 1993年 / 10卷 / 04期

关键词：

D O I：

10.1006/fmic.1993.1034

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：

A model was developed to predict the time for growth of 104 spores/tube of proteolytic strains of C. botulinum in sealed tubes of broth media with varying pH (5-7), NaCl levels (0-3%) and storage temperatures (15-37°C). The proportion of positive samples from a set of inoculated tubes of an individual treatment combination were fitted to a logistic function having parameters for the time to turbidity, the rate at which tubes become turbid and the proportion of positive tubes after 62 days. These three parameters were then fitted to multiple regression equations where pH, NaCl levels and temperature were the descriptive parameters. Sodium chloride (<3%) had little effect on the time for growth, but temperatures below 20°C and pH values below 5.5 greatly delayed growth. © 1993 Academic Press Limited.

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页码：295 / 301

页数：7

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