Contamination of Beef Tissue Surfaces by Cattle Manure Inoculated with Salmonella typhimurium and Listeria monocytogenes
1991; Elsevier BV; Volume: 54; Issue: 2 Linguagem: Inglês
10.4315/0362-028x-54.2.102
ISSN1944-9097
AutoresJames S. Dickson, M. D. MacNeil,
Tópico(s)Listeria monocytogenes in Food Safety
ResumoContamination of beef lean and fat tissue surfaces by Salmonella typhimurium and Listeria monocytogenes was evaluated using phosphate buffer or sterilized manure as an inoculation menstruum. Immersion in inoculated phosphate buffer resulted in an increase in numbers of attached cells during the 120 min inoculation for both bacterial species. Tissue immersed in inoculated manure generally showed an increase in cell numbers up to 10 min of immersion with only slight increases in cell numbers from 10 to 120 min. Fewer cells attached to either tissue type from the manure inoculum (P<0.05), although actual numerical differences were small.
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