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KMID : 1134820160450071041
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Journal of the Korean Society of Food Science and Nutrition
2016 Volume.45 No. 7 p.1041 ~ p.1048
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Behavior of Campylobacter jejuni Biofilm Cells and Viable But Non-Culturable (VBNC) C. jejuni on Smoked Duck
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Jo Hye-Jin
Jeon Hye-Ri
Yoon Ki-Sun
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Abstract
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Biofilm cells and viable but non-culturable (VBNC) state may play a role in the survival of Campylobacter jejuni under unfavorable environmental conditions. The objective of this study was to investigate the behavior of C. jejuni biofilm cells and VBNC cells on smoked duck. The transfer of C. jejuni biofilm cells to smoked duck and its ability to resuscitate from biofilm and VBNC cells on smoked duck was investigated. Transfer experiments were conducted from C. jejuni biofilm cells to smoked duck after 5 min, 1 h, 3 h, and 24 h contact at room temperature, and the efficiency of transfer (EOT) was calculated. In addition, smoked duck was inoculated with C. jejuni biofilm and VBNC cells and then stored at 10, 24, 36, and 42°C to examine the cells' ability to resuscitate on smoked ducks. The 5 min contact time between C. jejuni biofilm cells and smoked duck showed a higher EOT (0.92) than the 24 h contact time (EOT=0.08), and the EOT decreased as contact time increased. Furthermore, C. jejuni biofilm cells on smoked duck were not recovered at 10, 24, and 36°C, and C. jejuni VBNC cells were not resuscitated at 42°C. Although the resuscitation of C. jejuni biofilm and VBNC cells was not observed on smoked duck, microbial criteria of C. jejuni is needed in poultry and processed poultry products due to risk of its survival and low infectious dose.
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KEYWORD
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C. jejuni, biofilm, viable but non-culturable (VBNC), smoked duck
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