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Abstract ▼ AI-Helper

The antimicrobial effects of ethanol and organic acids(acetic, citric, lactic. propionic, tartaric acid), either alone or in combination against four foodborne microorganisms (Listeria monocytogenes, Salmonella typhimurium, Staphylococcus aureus and Escherichia coli O157:H7) in tryptic soy broth wer...

The antimicrobial effects of ethanol and organic acids(acetic, citric, lactic. propionic, tartaric acid), either alone or in combination against four foodborne microorganisms (Listeria monocytogenes, Salmonella typhimurium, Staphylococcus aureus and Escherichia coli O157:H7) in tryptic soy broth were determined. Area under the growth curve, minimum generation time, maximum growth rate, and detection time were measured by using automated turbidometer Bioscreen(Labsystem, Finland), for 24 hr at $30^{\circ}C$. All microorganisms were not grown at 7% ethanol in the media. The 0.1% propionic acid showed the strongest inhibitory effects against S. aureus, L. monocytogenes and E. coli O157 : H7 compared with other organic acids, whereas 0.01% organic acids did not show significant inhibitory effect against microorganisms tested (p > 0.01) except S. aureus. The combination of 1% ethanol and 0.01% organic acids were significantly more effective than alone on growth of S. aureus and L. monocytogenes(p < 0.01).

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