Colorimetric viral detection based on sialic acid stabilized gold nanoparticles.

Colorimetric viral detection based on sialic acid stabilized gold nanoparticles.
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DOI:
10.1016/j.bios.2012.10.067
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发表时间:
2013-04-15
影响因子:
12.6
通讯作者:
Zhang P
Zhang P
中科院分区:
工程技术1区
文献类型:
--
作者:
Lee C;Gaston MA;Weiss AA;Zhang P

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Sialic acid reduced and stabilized gold nanoparticles (d=20.1±1.8 nm) were synthesized by a simple one-pot, green method without chemically modifying sialic acid for colorimetric detection of influenza virus. The gold nanoparticles showed target-specific aggregation with viral particles via hemagglutinin–sialic acid binding. A linear correlation was observed between the change in optical density and dilution of chemically inactivated influenza B/Victoria and influenza B/Yamagata. Virus dilution (hemagglutination assay titer, 512) of 0.156 vol% was readily detected. The upper limit of the linearity can be extended with the use of more sialic acid–gold nanoparticles.
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