Light butter: natural microbial population and potential growth of Listeria monocytogenes and Yersinia enterocolitica |
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| Authors: | Rosalba Lanciotti S. Massa Maria E. Guerzoni Giovanna Di Fabio |
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| Affiliation: | Dipartimento di Protezione e Valorizzazione Agroalimentare, Universita di Bologna, Via S. Giacomo 7, 40126 Bologna, Italy |
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| Abstract: | Yarrowia lipolytica, Bacillus polymyxa and Enterococcus faecium were the most frequent yeast and bacterial spoilage species associated with commercial light butter. Following inoculation and incubation at 4°C, strains of Y. enterocolitica and L. monocytogenes exhibited growth rates higher than those of the naturally occurring microflora. Listeria monocytogenes displayed a higher aptitude to proliferate in such food while the cell increment of Y. enterocolitica was limited. |
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