Effect of nisin and perilla oil combination against Listeria monocytogenes and Staphylococcus aureus in milk
2016
Zhao, Xingchen | Shi, Ce | Meng, Rizeng | Liu, Zonghui | Huang, Yanjun | Zhao, Ziwen | Guo, Na
In the present study, in vitro interaction of nisin and perilla oil (PO) against 20 food-borne isolates of L. monocytogenes and S. aureus were assessed using a checkerboard microdilution method. Synergism was observed in tested strains with the fractional inhibitory concentration indexs (FICIs) ranges from 0.125–0.25 and 0.19–0.375, respectively. Scanning electron microscopy was carried out to investigate the effect of nisin and PO on the integrity of cell wall and membrane of L. monocytogenes and S. aureus. The results showed that nisin and PO were more effective in damaging cell wall and membrane in combination.
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