Determination of Heat Resistance of Exponential Phase Enterococcal Cells
Abstract:
The heat resistance of exponential phase cells of environmental
barley isolates Enterococcus faecium BAR 1 and a hospital
isolate Enterococcus faecalis MI 2 grown at 37 or 45
was determined at 55, 60 and 62.5 ° C for 30 min. From the survival curves,
the decimal reduction times (D-values) were determined. Cells grown at 45° C
showed higher D-values. It was determined that the exponential phase cells grown
at 45 were more resistant to heat than the heat resistance of cells grown at
37° C. The cells of both isolates were found resistant to heat treatment at
55, 60 and 62.5 as compared with the control in which cells were grown at 37°
C and treated at 62.5° C.
How to cite this article
Mushtaq Ahmad, David G. Smith and S. Mahboob, 2003. Determination of Heat Resistance of Exponential Phase Enterococcal Cells. Journal of Biological Sciences, 3: 340-346.
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