Distribution of toxigenicBacillus cereusin rice samples marketed in Hong Kong
✍ Scribed by P. K. Lee; J. A. Buswell; K. Shinagawa
- Book ID
- 104739132
- Publisher
- Springer
- Year
- 1995
- Tongue
- English
- Weight
- 359 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1573-0972
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✦ Synopsis
Eleven of 16 samples of rice on sale in rice shops and supermarkets in Hong Kong contained Bacih cereus. Although B. cereus counts did not exceed 100 bacteria/g in most of the positive samples, a sample of Thai red rice and a poor quality rice originating from China contained between 300 to 1000 cells/g and IO4 to 2 X IO5 cells/g, respectively.
Nine strains produced an enterotoxin responsible for the diarrhoeal-type B. cereus food poisoning and seven of these strains also produced a haemolysin (haemolysin BL), a dermonecrotic vascular permeability factor which may be a virulence determinant in diarrhoeal illness caused by this bacterium.