Abstract
Rapid and sensitive detection techniques for foodborne pathogens are important to the food industry. However, traditional detection methods rely on bacterial culture in combination with biochemical tests, a process that typically takes 4–7 days to complete. In this study, we described a high-flux polymerase chain reaction (PCR) method for simultaneous detection of nine targeted genes (rfbE, stx1, stx2, invA, oprI, tlh, trh, tdh, and hlyA) with multiplex strains. The designed primers were highly specific for their respective target gene fragments. As the selected primers follow the principles of similar melting and annealing temperature, all the targeted genes could be detected for one strain with the same PCR program. Combining with 96-well PCR plate, by adding a single different gene to each well in each row, both the ATCC strains (E. coli, Salmonella spp., V. parahaemolyticus, L. monocytogenes, P. aeruginosa, S. aureus) and the clinical strains (E. coli, P. aeruginosa, S. aureus) were simultaneously detected to carry their specific and virulence genes. Therefore, using 96-well PCR plate for PCR amplification might be applied to high-flux sequencing of specific and virulence genes.
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Acknowledgements
This work was supported by the National Key R&D Program of China (no. 2016YFD0400203), YangFan Innovative and Entrepreneurial Research Team Project (No. 2014YT02S029), the National Key Research and Development Program of China (2016YFD04012021), Guangdong Special Support Program (2016TQ03N682), Pearl River S&T Nova Program of Guangzhou (201710010061), the Fundamental Research Funds for the Central Universities (Dr. Zhenbo Xu, D2191310), Collaborative Grant with AEIC (KEO-2019-0624-001-1), the 111 Project (B17018), and Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety (KL-2018-05, KL-2018-14, KL-2018-16).
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Author Yi Liang was employed by the company Guangdong Zhongqing Font Biochemical Science and Technology Co. Ltd. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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Li, Y., Qiu, Y., Ye, C. et al. High-flux simultaneous screening of common foodborne pathogens and their virulent factors . Bioprocess Biosyst Eng 43, 693–700 (2020). https://doi.org/10.1007/s00449-019-02267-7
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DOI: https://doi.org/10.1007/s00449-019-02267-7