Strain variability of foodborne pathogens in microbiological risk assessment - a review.

Shihong Tian; Xiang Wang; Hongmei LI; Li Bai; Hong Liu; Xibin Zhang; Qingli Dong

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Strain variability of foodborne pathogens in microbiological risk assessment - a review.

Author: Shihong TIAN ¹ ; Xiang WANG ¹ ; Hongmei LI ¹ ; Li BAI ² ; Hong LIU ³ ; Xibin ZHANG ⁴ ; Qingli DONG ¹
Author Information

1. School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
2. China National Center for Food Safety Risk Assessment, Beijing 100021, China.
3. Shanghai Municipal Center for Disease Control & Prevention, Shanghai 200336, China.
4. New Hope Liuhe Co., Ltd, Beijing 100102, China.
Publication Type:Review
Keywords: foodborne pathogens; risk assessment; strain variability
MeSH: Food Microbiology; Listeria monocytogenes/genetics*; Risk Assessment; Salmonella/genetics*
From: Chinese Journal of Biotechnology 2020;36(11):2334-2344
CountryChina
Language:Chinese
Abstract: Strain variability is one of the most important factors to influence the accuracy of foodborne pathogens risk assessment, such as Listeria monocytogenes, Salmonella spp. Strain-to-strain variation is defined as the inherent differences among identically treated strains of the same microbial species. The differences cannot be eliminated by changing test methods or improving test protocols. This review addresses presently related studies of strain variability. Based on the effect of strain variability on the outcome of risk assessment, we summarize sources of variabilities in food chain, strain phenotypic variabilities and the methods to integrate strain variability in growth and inactivation into predictive modelling, and indicate the inadequacies in the study of strain variability. We suggest further study the mechanism of strain variability, expand the comparison of variability among different sources, and integrate the variability of gene expression, protein and cell metabolism into the predictive modelling.