Establishment of probabilistic model for Salmonella Enteritidis growth and inactivation under acid and osmotic pressure
The growth and survival characteristic of Salmonella Enteritidis under acidic and osmotic conditions were studied. Meanwhile, a probabilistic model based on the theory of cell division and mortality was established to predict the growth or inactivation of S. Enteritidis. The experimental results dem...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2017-12-01
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| Series: | Food Science and Human Wellness |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213453017301131 |
| _version_ | 1826829905753538560 |
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| author | Yujiao Shi Hong Liu Baozhang Luo Yangtai Liu Siyuan Yue Qing Liu Qingli Dong |
| author_facet | Yujiao Shi Hong Liu Baozhang Luo Yangtai Liu Siyuan Yue Qing Liu Qingli Dong |
| author_sort | Yujiao Shi |
| collection | DOAJ |
| description | The growth and survival characteristic of Salmonella Enteritidis under acidic and osmotic conditions were studied. Meanwhile, a probabilistic model based on the theory of cell division and mortality was established to predict the growth or inactivation of S. Enteritidis. The experimental results demonstrated that the growth curves of planktonic and detached cells showed a significant difference (p < 0.05) under four conditions, including pH5.0 + 0.0%NaCl, pH7.0 + 4.0%NaCl, pH6.0 + 4.0%NaCl, and pH5.0 + 4.0%NaCl. And the established primary and secondary models could describe the growth of S. enteritis well by estimating four mathematics evaluation indexes, including determination coefficient (R2), root mean square error (RMSE), accuracy factor (Af) and bias factor (Bf). Moreover, sequential treatment of 15% NaCl stress followed by pH 4.5 stress was the best condition to inactivate S. Enteritidis in 10 h at 25 °C. The probabilistic model with Logistical or Weibullian form could also predict the inactivation of S. Enteritidis well, thus realize the unification of predictive model to some extent or generalization of inactivation model. Furthermore, the primary 4-parameter probabilistic model or generalized inactivation model had slightly higher applicability and reliability to describe the growth or inactivation of S. Enteritidis than Baranyi model or exponential inactivation model within the experimental range in this study. Keywords: Acid, Osmotic pressure, Salmonella Enteritidis, Probabilistic model, Unification, Generalization |
| first_indexed | 2024-03-12T09:36:30Z |
| format | Article |
| id | doaj.art-d8f7869d6ee74454b0f368ded071875b |
| institution | Directory Open Access Journal |
| issn | 2213-4530 |
| language | English |
| last_indexed | 2025-02-16T09:21:36Z |
| publishDate | 2017-12-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Food Science and Human Wellness |
| spelling | doaj.art-d8f7869d6ee74454b0f368ded071875b2025-02-03T05:17:14ZengTsinghua University PressFood Science and Human Wellness2213-45302017-12-0164176186Establishment of probabilistic model for Salmonella Enteritidis growth and inactivation under acid and osmotic pressureYujiao Shi0Hong Liu1Baozhang Luo2Yangtai Liu3Siyuan Yue4Qing Liu5Qingli Dong6School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR ChinaDepartment of Food Hygiene, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, PR ChinaDepartment of Food Hygiene, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, PR ChinaSchool of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR ChinaSchool of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR ChinaSchool of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR ChinaSchool of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR China; Corresponding author.The growth and survival characteristic of Salmonella Enteritidis under acidic and osmotic conditions were studied. Meanwhile, a probabilistic model based on the theory of cell division and mortality was established to predict the growth or inactivation of S. Enteritidis. The experimental results demonstrated that the growth curves of planktonic and detached cells showed a significant difference (p < 0.05) under four conditions, including pH5.0 + 0.0%NaCl, pH7.0 + 4.0%NaCl, pH6.0 + 4.0%NaCl, and pH5.0 + 4.0%NaCl. And the established primary and secondary models could describe the growth of S. enteritis well by estimating four mathematics evaluation indexes, including determination coefficient (R2), root mean square error (RMSE), accuracy factor (Af) and bias factor (Bf). Moreover, sequential treatment of 15% NaCl stress followed by pH 4.5 stress was the best condition to inactivate S. Enteritidis in 10 h at 25 °C. The probabilistic model with Logistical or Weibullian form could also predict the inactivation of S. Enteritidis well, thus realize the unification of predictive model to some extent or generalization of inactivation model. Furthermore, the primary 4-parameter probabilistic model or generalized inactivation model had slightly higher applicability and reliability to describe the growth or inactivation of S. Enteritidis than Baranyi model or exponential inactivation model within the experimental range in this study. Keywords: Acid, Osmotic pressure, Salmonella Enteritidis, Probabilistic model, Unification, Generalizationhttp://www.sciencedirect.com/science/article/pii/S2213453017301131 |
| spellingShingle | Yujiao Shi Hong Liu Baozhang Luo Yangtai Liu Siyuan Yue Qing Liu Qingli Dong Establishment of probabilistic model for Salmonella Enteritidis growth and inactivation under acid and osmotic pressure Food Science and Human Wellness |
| title | Establishment of probabilistic model for Salmonella Enteritidis growth and inactivation under acid and osmotic pressure |
| title_full | Establishment of probabilistic model for Salmonella Enteritidis growth and inactivation under acid and osmotic pressure |
| title_fullStr | Establishment of probabilistic model for Salmonella Enteritidis growth and inactivation under acid and osmotic pressure |
| title_full_unstemmed | Establishment of probabilistic model for Salmonella Enteritidis growth and inactivation under acid and osmotic pressure |
| title_short | Establishment of probabilistic model for Salmonella Enteritidis growth and inactivation under acid and osmotic pressure |
| title_sort | establishment of probabilistic model for salmonella enteritidis growth and inactivation under acid and osmotic pressure |
| url | http://www.sciencedirect.com/science/article/pii/S2213453017301131 |
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