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Occurrence of Bacillus cereus in raw milk and some dairy products in Egypt

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Title: Occurrence of Bacillus cereus in raw milk and some dairy products in Egypt
Authors: Mohamed, Asmaa S. Browse this author
Alnakip, Mohamed E. A. Browse this author
Aal, Salah F. Abd-El Browse this author
Keywords: Bacillus cereus
raw milk
dairy products
Issue Date: Apr-2016
Journal Title: Japanese Journal of Veterinary Research
Volume: 64
Issue: Supplement 2
Start Page: S95
End Page: S103
Abstract: A total of 160 samples (20 each of raw cow's milk and seven dairy products; pasteurized milk, small and large scales-manufactured ice cream, infant formulas, full-fat milk powder, rice pudding and yoghurt) were investigated for the presence of B. cereus. Biochemical tests followed by PCR were carried out to confirm the suspected B. cereus isolates. Overall 44 samples yielded Bacillus-like growth of which 34 were positive for B. cereus. The highest occurrence % of B. cereus was detected in raw cow's milk (60 %), and rice pudding (55 %). Non-B. cereus isolates were identified based on 16S rRNA GS and 7 isolates of B. licheniformis and 3 isolates of B. subtilis were obtained. No psychrotolerant B. cereus strains were detected in all samples. Evidence evolved from our results confirms the need for authorities and producers to adopt B. cereus as a reference in microbiological hazard control, particularly for dairy products.
Type: bulletin (article)
Appears in Collections:Japanese Journal of Veterinary Research > Volume 64 Supplement 2

Submitter: 獣医学部図書室

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