Detection of hepatitis A virus in shellfish and berries by digital polymerase chain reaction
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(1.China Medical University, Liaoning Shenyang 110004, China;2.Eastern Liaoning University, Liaoning Dandong 118000, China;3.Dalian Customs, Liaoning Dalian 116000, China;4.Zhuanghe Market Supervision Service Center, Liaoning Dalian 116400, China;5.Tianjin Customs, Tianjin 300000, China;6.Dandong Customs, Liaoning Dandong 118000, China)

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    Abstract:

    Objective To establish a digital polymerase chain reaction(PCR)method for hepatitis A virus (HAV) in shellfish and berry foods. Methods After sample enrichment by proteinase K digestion polyethylene glycol method, RNA was extracted by high purity virus nucleic acid kit, and then digital PCR was used to detect HAV. Results This method had typical amplification, good repeatability and stability for HAV. The sensitivity of HAV in strawberry, raspberry and shellfish samples was 25.30 CCID50/20 g, 6.32 CCID50/20 g and 12.54 CCID50/2 g respectively, which means that the detection sensitivity of HAV was high. Conclusion This method is rapid, accurate, sensitive, and is suitable for the determination of HAV in shellfish and berry foods.

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LIN Yingchi, WANG Dianfu, QU Fei, TIAN Zhuo, ZHU Jinyan, ZHANG Hongwei, MA Lidan. Detection of hepatitis A virus in shellfish and berries by digital polymerase chain reaction[J].中国食品卫生杂志,2020,32(4):379-385.

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  • Received:June 02,2020
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  • Online: August 30,2020
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