Diarrhoeal enterotoxin production by psychrotrophic Baccillus cereus present in reconstituted milk-based infant formulae (MIF).

Abstract

One hundred reconstituted milk-based infant formulae (MIF) representative of 10 leading brands available in many European Economic Community countries were examined for psychrotrophic Bacillus cereus and for the presence of diarrhoeal enterotoxin. Of the 38 B. cereus isolates recovered from MIF, one, four and 16 strains grew at 4, 6 and 8 degrees C after 15 d. One (2.6%), two (5.3%) and six (15.8%) of the isolates were identified as potential psychrotrophic food poisoning strains as they were both enterotoxigenic and exhibited good growth at 4, 6 and 8 degrees C, respectively. Enterotoxin was not detected in MIF in which less than 5.36 log10 cfu of B. cereus ml-1 had grown. While psychrotrophic enterotoxigenic B. cereus strains occur occasionally in MIF, brief storage of reconstituted MIF at the recommended refrigeration temperature of 4 degrees C will allow this product to remain safe for consumption.

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@article{Rowan1998DiarrhoealEP, title={Diarrhoeal enterotoxin production by psychrotrophic Baccillus cereus present in reconstituted milk-based infant formulae (MIF).}, author={Neil J. Rowan and J . G . Anderson}, journal={Letters in applied microbiology}, year={1998}, volume={26 2}, pages={161-5} }