Low incidence of foodborne pathogens of concern in raw milk utilized for farmstead cheese production

Journal of Food Protection
Dennis J D'AmicoCatherine W Donnelly

Abstract

Overall milk quality and prevalence of four target pathogens in raw milk destined for farmstead cheesemaking was examined. Raw milk samples were collected weekly from June to September 2006 from 11 farmstead cheese operations manufacturing raw milk cheese from cow's, goat's, and sheep's milk. Samples were screened for Listeria monocytogenes, Staphylococcus aureus, Salmonella, and Escherichia coli O157:H7 both quantitatively (direct plating) and qualitatively (PCR). Overall, 96.8% of samples had standard plate counts of < 100,000 CFU/ml, 42.7% of which were < 1,000 CFU/ml. Although no federal standards exist for coliforms in raw milk, 61% of samples tested conformed to pasteurized milk standards under the U.S. Pasteurized Milk Ordinance (PMO) at < 10 CFU/ml. All cow and sheep milk samples and 93.8% of goat milk samples were within the limits dictated by the PMO for somatic cell counts. Of the 11 farms, 8 (73%) produced samples that were positive for S. aureus, which was detected in 34.6% (46 of 133) of milk samples. L. monocytogenes was isolated from three milk samples (2.3%), two of which were from the same farm. E. coli O157:H7 was recovered from one sample of goat's milk for an overall incidence of 0.75%. Salmonella was not r...Continue Reading

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Citations

Aug 4, 2012·Journal of Food Protection·Stéphane D MiszczychaDelphine Thevenot-Sergentet
Jan 6, 2012·Foodborne Pathogens and Disease·Paulo de Souza Costa SobrinhoAline Silva Santos
Aug 4, 2012·Journal of Food Protection·Emily E JacksonRavinder M Reddy
Sep 10, 2009·Foodborne Pathogens and Disease·Stephen P OliverShelton E Murinda
Aug 26, 2015·Animal Science Journal = Nihon Chikusan Gakkaihō·Elisa CarloniFranco Tonucci
Oct 18, 2016·Frontiers in Microbiology·Nicole H MartinMartin Wiedmann
Jul 8, 2017·Critical Reviews in Food Science and Nutrition·Qianting OuZhenjiang Yao
Dec 2, 2011·Zoonoses and Public Health·M J LynchM Murphy
Apr 26, 2015·Applied and Environmental Microbiology·Elisabetta LambertiniAbani K Pradhan
Feb 5, 2013·Foodborne Pathogens and Disease·Marjo RuusunenMiia Lindström
Nov 21, 2017·Journal of Dairy Science·Stephanie Clark, María Bárbara Mora García
Oct 29, 2014·Tropical Animal Health and Production·Isoken Henrietta Igbinosa

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