ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2013, Vol. 44 ›› Issue (6): 911-918.doi: 10.11843/j.issn.0366-6964.2013.06.012

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A Electrochemical Immunosensor Detection of Avian Influenza Virus (H5N1) Based on Nano Materials

HUANG Jiao-ling, XIE Zhi-xun*, LUO Si-si, XIE Zhi-qin, XIE Li-ji, LIU Jia-bo, PANG Yao-shan, FAN Qing   

  1. (Guangxi Key Laboratory of Animal Vaccines and Diagnostics, Guangxi VeterinaryResearch Institute, Nanning 530001, China)
  • Received:2012-12-26 Online:2013-06-23 Published:2013-06-23

Abstract:

A novel electrochemical immunosensor for sensitive detection of avian influenza virus (AIV) H5N1 was described. A graphene oxide (GO) carrying H5N1-polychonal antibodies (PAb-H5N1) and Bovine serum albumin (BSA) were used as signal amplification materials. On the basis of the signal amplification strategy of PAb-H5N1-GO-BSA nanocomposite, the developed immunosensor showed a 256-fold increase in detection limit compared to the immunosensor without PAb-H5N1-GO-BSA nanocomposite amplification. The developed method could detect 2-15 HA unit·50 μL-1 H5N1 with a linear calibration range from 2-15 to 2-8 HA unit·50 μL-1. This immunosensor has a good specificity and high sensitivity, and it is promising for rapid detection of pathogenic microorganisms.

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