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Risk assessment of vibriosis by vibrio cholerae and vibrio vulnificus in whip-arm octopus consumption in South Korea

Authors
Oh, HyeminYoon, YohanHa, JimyeongLee, JeeyeonShin, Il-ShikKim, Young-MogPark, Kwon-SamKim, Sejeong
Issue Date
Jun-2021
Publisher
Korean Society of Fisheries and Aquatic Sciences
Keywords
Highly pathogenic Vibrio spp; Microbial risk assessment; Raw whip-arm octopus; Vibrio cholerae; Vibrio vulnificus
Citation
Fisheries and Aquatic Sciences, v.24, no.6, pp 207 - 218
Pages
12
Journal Title
Fisheries and Aquatic Sciences
Volume
24
Number
6
Start Page
207
End Page
218
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/146595
DOI
10.47853/FAS.2021.e21
ISSN
2234-1749
2234-1757
Abstract
This study evaluated the risk of foodborne illness from highly pathogenic Vibrio spp. (Vibrio vulnificus and V. cholerae) by raw whip-arm octopus (Octopus minor) consumption. In total 180 samples of raw whip-arm octopus were collected from markets and examined for the prevalence of V. vulnificus and V. cholerae. Predictive models describing the kinetic behavior of Vibrio spp. in raw whip-arm octopus were developed, and the data on amounts and frequency of raw whip-arm octopus consumption were collected. Using the collected data, a risk assessment simulation was conducted to estimate the probability of foodborne illness raw whip-arm octopus consumption using @RISK. Initial contamination levels of Vibrio spp. in raw whip-arm octopus were −3.9 Log colony-forming unit/g, as estimated by beta distribution fitting. The developed predictive models were appropriate to describe Vibrio spp. in raw whip-arm octopus during distribution and storage with R2 values of 0.946–0.964. The consumption frequency and daily consumption amounts of raw whip-arm octopus per person were 0.47% and 57.65 g, respectively. The probability of foodborne illness from raw whip-arm octopus consumption was estimated to be 8.71 × 10−15 for V. vulnificus and 7.08 × 10−13 for V. cholerae. These results suggest that the risk of Vibrio spp. infection from raw whip-arm octopus consumption is low in South Korea. © 2021 The Korean Society of Fisheries and Aquatic Science.
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