Rapid, specific and sensitive detection of in seafood by accelerated strand exchange amplification
Vibrio parahaemolyticus infectious diseases caused by seafood contamination may be life-threatening to people with weak immunity. The detection of the Vibrio parahaemolyticus pathogen in aquatic foods is critical for reducing the outbreak of human Vibrio parahaemolyticus -associated diseases. In thi...
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Published in | Analytical methods Vol. 15; no. 5; pp. 655 - 662 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Published |
02.02.2023
|
Online Access | Get full text |
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Summary: | Vibrio parahaemolyticus
infectious diseases caused by seafood contamination may be life-threatening to people with weak immunity. The detection of the
Vibrio parahaemolyticus
pathogen in aquatic foods is critical for reducing the outbreak of human
Vibrio parahaemolyticus
-associated diseases. In this study, a highly sensitive, specific, and time-saving real-time narrow thermal-cycling amplification detection method was developed based on accelerated strand exchange amplification (ASEA). It can detect cultured
Vibrio parahaemolyticus
at concentrations as low as 25 CFU mL
−1
. In addition, for artificially spiked scallop meat, the detection limit was 1.8 × 10
3
CFU g
−1
without pre-culture and 18 CFU g
−1
of initial inoculum after 3 h enrichment. The whole assay, starting from DNA extraction, can be completed within 20 min. The ASEA detection method established in this study is an effective tool for the rapid detection of
Vibrio parahaemolyticus
strains in a large number of seafood samples.
The total detection time from DNA preparation was about 20 min. The LOD of the ASEA method was 25 CFU mL
−1
of pure cultured
V. parahaemolyticus
. The enrichment time was significantly reduced to 3 h with a LOD of 18 CFU g
−1
of spiked scallop meat. |
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Bibliography: | https://doi.org/10.1039/d2ay01889f Electronic supplementary information (ESI) available. See DOI |
ISSN: | 1759-9660 1759-9679 |
DOI: | 10.1039/d2ay01889f |