Abstract
Vibrio parahaemolyticus is an important human pathogen responsible for foodborne gastroenteritis worldwide. In this paper, a loop-mediated isothermal amplification (LAMP) method was developed for detection of V. parahaemolyticus in seafood. A set of four primers, two outer and two inner, was designed specifically to recognize the thermolabile hemolysin gene (tlh) of V. parahaemolyticus. The LAMP assay was capable of detecting a minimum of 900 fg test tube−1 for V. parahaemolyticus genomic DNA and 2.4 × 102 CFU mL−1 for pure cultures. The detection limit for the seeded seafood samples was 8.9 × 102 CFU g−1. In addition, 42 shares of natural seafood samples were tested and 8 samples were recorded positive for V. parahaemolyticus, while 6 were positive by conventional culture methods. In conclusion, the LAMP assay is an effective and low-cost method with high specificity and sensitivity for rapid detection and identification of V. parahaemolyticus both in culture isolates and seafood samples.
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Acknowledgement
This work was supported by Fok Ying Dong Education Foundation of China 114035 and Leading Academic Discipline Project of Shanghai Municipal Education Commission J50704.This work was also supported by the Maine Agricultural and Forest Experiment Station at the University of Maine with external publication number 3187.
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Sun, X., Xu, Q., Pan, Y. et al. A loop-mediated isothermal amplification method for rapid detection of Vibrio parahaemolyticus in seafood. Ann Microbiol 62, 263–271 (2012). https://doi.org/10.1007/s13213-011-0255-0
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DOI: https://doi.org/10.1007/s13213-011-0255-0