Rapid quantitative detection of dominant bacteria during the fermentation process of pickled cabbage by qPCR
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WANG Dong-dong,
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SONG Ya-yi,
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CHEN Gong,
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LI Heng,
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SHEN Wen-xi,
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WU Ya-long,
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WANG Yong,
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TANG Yao,
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ZHANG Yu-dan,
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ZHANG Wei,
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ZHU Xiang,
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ZHANG Qi-sheng
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Abstract
Objective:In order to detect the change of dominant bacteria in pickled cabbage rapidly and accurately. Results:A rapid and quantitative method for the determination of Lactobacillus plantarum,Bacillus spp.,Staphylococcus spp. and Escherichia coli in pickled cabbage was established based on qPCR(Real-time PCR). Result:The results showed that correlation coefficient of the standard curve R2≥0.98,amplification efficiency 110%≥E≥90%,recoveries were in the range of 80% to 100%,meet the basic requirements of qPCR detection. Conclusion:This method was applicable to detect the change of Lactobacillus plantarum,Bacillus spp.,Staphylococcus spp. and Escherichia coli in pickled cabbage rapidly and accurately.
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