KMID : 0380619820140010011
|
|
Korean Journal of Food Science and Technology 1982 Volume.14 No. 1 p.11 ~ p.15
|
|
Growth Rate of Bacillus cereus and Heat Resistance of its Spores
|
|
|
|
Abstract
|
|
|
The growth rate and heat resistance of two types of Bacillus cereus isolated from cooked rice were observed. The FB-1 strain showed positive to haemolysis and negative to starch hydrolysis, but FB-2 strain positive to both reaction.
The cell number of B. cereus FB-1 reached to more than 107 cells/§¢ within 6 to 12 hours at 25¡35¡É when cultured on the medium of cooked rice homogenate (cooked rice 30g-phosphate buffer solution 80 §¢), but the numbers at its maximum growth were only 10©ù¡l0^6 cells/§¢ at 45¡55¡É. The specific growth rate of FB-1 strain were 0.82hr^(-1) at 20¡É, 1.76hr^(-1) at 30¡É, 2.21hr^(-1) at 35¡É and 1.84hr^(-1) at 40¡É, respectively. D-values of FB-1 and FB-2 spores at 70¡100¡É were in the range from 18 to 3.1 min and 23.5 to 3.7 min, respectively.
|
|
KEYWORD
|
|
|
|
FullTexts / Linksout information
|
|
|
|
Listed journal information
|
|
|