Effect of Variation of Sporulation Time and Temperature on Thermostability of Bacillus cereus Spores |
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Authors: | Lillian Lundgren |
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Affiliation: | Department of Plant Physiology, University of Göteborg, Sweden |
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Abstract: | The optimum temperature for sporulation of a strain of Bacillus cereus was estimated at 30°–35°C, where the maximum yield of spores was obtained between 18 and 24 hours’ incubation. Sporulation was more rapid, but less extensive at 40°C and did not occur at all at 45°C. The heat resistance of the spores increased with the sporulation temperature from 20° to 40°C. The spores appear to be more susceptible to heat destruction in the early stage of spore production than after further incubation. |
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