Abstract
Bacillus cereus strains were inoculated into tryptic soy broth (TSB) and incubated (7–35°C). Exponential and stationary phase cells were subjected to TSB plus sodium hypochlorite (0–3.6%), hydrogen peroxide (0–0.28%), and acetic acid (0–1.5%). Populations were counted on tryptic soy agar. Linear regression was fitted to survival data to calculate death rates. Cell counts decreased at 7°C. Differences in growth patterns were observed at 10°C and 15°C. Exponential and stationary phase cells showed significant (p<0.05) differences in disinfectant resistance. Strains treated with different disinfectants showed differences in growth and disinfectant resistance during different growth phases.
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