Probabilistic Models to Predict Listeria monocytogenes Growth at Low Concentrations of NaNO2 and NaCI in Frankfurters
- Authors
- Gwak, Eunji; Oh, Mi-Hwa; Park, Beom-Young; Lee, Heeyoung; Lee, Soomin; Ha, Jimyeong; Lee, Jeeyeon; Kim, Sejeong; Choi, Kyoung-Hee; Yoon, Yohan
- Issue Date
- Dec-2015
- Publisher
- KOREAN SOC FOOD SCIENCE ANIMAL RESOURCES
- Keywords
- NaNO2; probabilistic model; L. monocytogenes; frankfurters
- Citation
- KOREAN JOURNAL FOR FOOD SCIENCE OF ANIMAL RESOURCES, v.35, no.6, pp 815 - 823
- Pages
- 9
- Journal Title
- KOREAN JOURNAL FOR FOOD SCIENCE OF ANIMAL RESOURCES
- Volume
- 35
- Number
- 6
- Start Page
- 815
- End Page
- 823
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/10164
- DOI
- 10.5851/kosfa.2015.35.6.815
- ISSN
- 1225-8563
- Abstract
- This study developed probabilistic models to describe Listeria monocytogenes growth responses in meat products with low concentrations of NaNO2 and NaCl. A five-strain mixture of L. monocytogenes was inoculated in NBYE (nutrient broth plus 0.6% yeast extract) supplemented with NaNO2 (0-141 ppm) and NaCl (0-1.75%). The inoculated samples were then stored under aerobic and anaerobic conditions at 4, 7, 10, 12, and 15 degrees C for up to 60 d. Growth response data [growth (1) or no growth (0)] for each combination were determined by turbidity. The growth response data were analyzed using logistic regression to predict the growth probability of L. monocytogenes as a function of NaNO2 and NaCl. The model performance was validated with the observed growth responses. The effect of an obvious NaNO2 and NaCl combination was not observed under aerobic storage condition, but the antimicrobial effect of NaNO2 on the inhibition of L. monocytogenes growth generally increased as NaCl concentration increased under anaerobic condition, especially at 7-10 degrees C. A single application of NaNO2 or NaCl significantly (p<0.05) inhibited L. monocytogenes growth at 4-15 degrees C, but the combination of NaNO2 or NaCl more effectively (p<0.05) inhibited L. monocytogenes growth than single application of either compound under anaerobic condition. Validation results showed 92% agreement between predicted and observed growth response data. These results indicate that the developed model is useful in predicting L. monocytogenes growth response at low concentrations of NaNO2 and NaCl, and the antilisterial effect of NaNO2 increased by NaCl under anaerobic condition.
- Files in This Item
-
Go to Link
- Appears in
Collections - 생활과학대학 > 식품영양학과 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.