title: Effect of organic acids on Escherichia coli O157:H7 and Staphylococcus aureus contaminated meat.
abstract: Appropriate and safe antibacterial agents able to decontaminate meat surfaces have long been big concern of meat industry. In an attempt to manage beef carcass contamination, spray wash treatments utilizing three concentrations (1, 1.5 and 2%) of acetic, lactic, propionic and formic acids were performed to evaluate their efficacy in reducing numbers of Escherichia coli O157:H7 and Staphylococcus aureus on meat tissues. The procured beef pieces of freshly slaughtered animals were decontaminated with hot water and then inoculated with E. coli O157:H7 and S. aureus individually which then were spray washed with organic acids separately. The total plate count of the treated samples showed that the populations of bacteria decreased after being exposed to organic acids. Spray wash of formic acid resulted in the highest reduction of both bacterial species on meat surface. Significantly, higher log reductions were obtained for S. aureus than E. coli O157:H7. It was concluded that organic acids are highly effective in decontaminating meat surfaces and organic acids are shown to be safe, simple, efficient, and cheap modality of meat decontamination which can be highly recommended for industrial scales.
authors.affiliation: Faculty of Food Science and Technology, Universiti Putra Malaysia, 43300, Serdang, Selangor, Malaysia.
authors.forename: M
authors.initials: M
authors.lastname: Raftari
authors.forename: F Azizi
authors.initials: FA
authors.lastname: Jalilian
authors.forename: A S
authors.initials: AS
authors.lastname: Abdulamir
authors.forename: R
authors.initials: R
authors.lastname: Son
authors.forename: Z
authors.initials: Z
authors.lastname: Sekawi
authors.forename: A B
authors.initials: AB
authors.lastname: Fatimah
references.citation: Appl Environ Microbiol. 2006 Jan;72(1):660-4
references.pmid: 16391104
references.citation: J Food Prot. 2004 Mar;67(3):579-82
references.pmid: 15035377
references.citation: Int J Food Microbiol. 1998 Nov 10;44(3):149-69
references.pmid: 9851597
references.citation: J Med Microbiol. 2002 Mar;51(3):201-206
references.pmid: 11871614
references.citation: Biotechnol Appl Biochem. 1988 Jun;10(3):203-31
references.pmid: 3293613
references.citation: Poult Sci. 2002 May;81(5):621-8
references.pmid: 12033410
references.citation: J Food Prot. 2001 Nov;64(11):1722-9
references.pmid: 11726150
references.citation: Poult Sci. 2003 Apr;82(4):632-9
references.pmid: 12710485
references.citation: J Food Prot. 2001 Jan;64(1):58-62
references.pmid: 11198442
references.citation: Meat Sci. 2004 Apr;66(4):817-21
references.pmid: 22061013
references.citation: J Appl Bacteriol. 1990 Jan;68(1):69-74
references.pmid: 1690200
references.citation: Appl Environ Microbiol. 1991 Jan;57(1):255-9
references.pmid: 2036013
references.citation: J Food Prot. 1994 Aug;57(8):665-670
references.pmid: 31121755