Antimicrobial Effect of Phytochemicals to Listeria monocytogenes Isolated from Slaughterhouses
2018
Kim, H., Sookmyung Women's University, Seoul, Republic of Korea | Oh, H., Sookmyung Women's University, Seoul, Republic of Korea | Lee, H., Sookmyung Women's University, Seoul, Republic of Korea | Kim, S., Sookmyung Women's University, Seoul, Republic of Korea | Ha, J., Sookmyung Women's University, Seoul, Republic of Korea | Lee, J., Sookmyung Women's University, Seoul, Republic of Korea | Choi, Y., Sookmyung Women's University, Seoul, Republic of Korea | Lee, Y., Sookmyung Women's University, Seoul, Republic of Korea | Kim, Y., Sookmyung Women's University, Seoul, Republic of Korea | Yoon, Y., Sookmyung Women's University, Seoul, Republic of Korea | Lee, S., Sookmyung Women's University, Seoul, Republic of Korea
The objective of this study was to investigate the inhibitory effect of natural antimicrobials on Listeria monocytogenes isolated from Korean slaughterhouses. A mixture of 15 strains of L. monocytogenes at low (3 Log CFU/mL) or high (7 Log CFU/mL) concentration was exposed to various extracts (grapefruit seed extract, citrus fruit extract, ginger extract, pear extract, Japanese apricot concentrate, balloon flower extract, jujube extract, and omija extract) at 0.001-4.0 μg/mL. Ginger extract, pear extract, Japanese apricot concentrate, balloon flower extract, jujube extract, or omija extract showed no antimicrobial effects on high-concentration of L. monocytogenes (7 Log CFU/mL). However, grapefruit seed extract and citrus fruit extract showed antibacterial effects against L. monocytogenes at 3 and 7 Log CFU/mL with MBCs of 0.001 and 0.002 μg/mL, respectively. These results indicate that grapefruit seed extract and citrus fruits extract can be used to control L. monocytogenes as natural antimicrobials.
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