Distribution and Characteristics of Bacillus cereus Isolated from Rice in Taiwan

摘要

ABSTRACTSixty‐six strains ofBacillus cereuswere isolated from 12 kinds of rice samples collected in Taiwan by employing polymyxin pyruvate egg yolk mannitol bromothymol blue agar(PEMBA). It was found that in TaiwanB. cereuscould be detected in various rice samples (less than 200 CFU per gram). The isolates generally grew poorly under acidic conditions. Spore suspensions prepared from six isolates ofB. cereuswere used to detect their ability to resist heat. The D100°C‐andD92°C‐values for these six isolates in rice broth ranged from 4.2‐6.5 min and 16–36 min, respectively. Most of the isolates were sensitive to chloramphenicol (30 mcg), erythromycin (15 mcg), gentamicin (10 mcg) and streptomyc