Model to Predict Growth/No Growth Interfaces of Enterococcus as A Function of NACl and NANO₂

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• 作者：Heeyoung Lee ; EunjI Gwak ; Soomin Lee ; Sejeong Kim ; Jeeyeon Lee ; Jimyeong Ha ; Mi-hwa Oh ; Beom-young Park ; Mihi Yang ; Kyoung-hee Choi and Yohan Yoon
• 刊名：Journal of Food Safety
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：36
• 期：4
• 页码：537-547
• 全文大小：692K
• ISSN：1745-4565

文摘

This study developed growth/no growth models to describe the effect of NaNO₂ and NaCl on Enterococcus growth. Enterococcus spp. were incubated in deMan, Rogosa and Sharpe broth formulated with NaNO₂ (0–210 ppm) and NaCl (0–1.75%) at 4–15C up to 1,080 h under aerobic and anaerobic conditions. Growth responses (growth: 1 or no growth: 0) for all the combinations were collected. The growth response data (NaNO₂ × NaCl × storage time) for each temperature and packaging condition were analyzed by logistic regression. The developed model showed that NaNO₂ and NaCl influenced Enterococcus growth, but a combination effect of NaNO₂ and NaCl was observed at 7C and 15C, and at 7C, 10C and 12C under aerobic and anaerobic conditions, respectively. Under the conditions at which a combination effect was observed, the antimicrobial effect of NaNO₂ increased as NaCl concentration increased. Validation showed a high concordance rate (90%). The results indicate that the developed models may be useful for describing the effect of NaNO₂ and NaCl on Enterococcus growth.