Abstract
In this study, antimicrobial activity of traditionally produced fig and mulberry vinegar was examined. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of vinegar samples against eight microorganisms including Bacillus subtilis, Enterococcus faecalis, Escherichia coli, Escherichia coli O157:H7, Listeria monocytogenes, Salmonella typhimurium, Staphylococcus aureus and Pediococcus acidilactici were determined. Both types of vinegar exhibited inhibitive effect on all test microorganisms. The MIC values of fig and mulberry vinegar were determined as ranging between 0.39-12.5% and 3.12-12.5% (v/v), respectively. The most sensitive bacteria to fig vinegar was B. subtilis while S. typhimurium was the most sensitive one to mulberry vinegar. After neutralization of vinegar, bactericidal effect was observed only in fig vinegar sample, which had higher total phenolic content than mulberry vinegar. These results indicated the potential of home-made vinegars as antimicrobial substance that could be used as functional food ingredients and as food supplements.
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