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http://dx.doi.org/10.3746/jkfn.2012.41.7.1009

Effects of Opuntia ficus indica Extracts on Inactivation of Escherichia coli O157:H7 and Listeria monocytogenes on Fresh-cut Apples  

Seo, Young-Ho (Seoul Metropolitan Government Research Institute of Public Health and Environment)
Han, Chang-Ho (Seoul Metropolitan Government Research Institute of Public Health and Environment)
Lee, Jeong-Mi (Seoul Metropolitan Government Research Institute of Public Health and Environment)
Choi, Sung-Min (Seoul Metropolitan Government Research Institute of Public Health and Environment)
Moon, Kwang-Deog (Dept. of Food Science and Technology, Kyungpook National University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.41, no.7, 2012 , pp. 1009-1013 More about this Journal
Abstract
We investigated the antibacterial effects of Opuntia ficus indica extracts on foodborne pathogens, Escherichia coli O157:H7 and Listeria monocytogenes, on the medium of sliced apples. Pathogens were inoculated on sliced apples and immersed for 10 min in Opuntia ficus indica extracts. Each sample was packaged and stored at $4^{\circ}C$ and $21^{\circ}C$ for 8 days. The populations of E. coli O157:H7 and L. monocytogenes significantly decreased with increasing extract concentration (p<0.05). In particular, L. monocytogenes was reduced to non-detectable levels after 2 days in 50 mg/mL treatment at $4^{\circ}C$ and $21^{\circ}C$ Opuntia ficus indica extracts therefore have antibacterial effects on the two foodborne pathogens. Sensory evaluation results indicated that treated apples had better sensory characteristics than did the control. Therefore, the results suggest that Opuntia ficus indica extracts could be useful as a natural food preservative to improve microbial safety.
Keywords
Opuntia ficus indica; fresh-cut; apple; Escherichia coli O157:H7; Listeria monocytogenes;
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Times Cited By KSCI : 5  (Citation Analysis)
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