Colloids and Surfaces B: Biointerfaces 2013-01-01

Filtration, adsorption and immunodetection of virus using polyelectrolyte multilayer-modified paper.

Per A Larsson, Sushma G Puttaswamaiah, Christine Ly, Alois Vanerek, J Christopher Hall, François Drolet

文献索引：Colloids Surf. B Biointerfaces 101 , 205-9, (2013)

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摘要

A new method for detection of viruses has been developed. The entire assay can be performed within 2h, and consists of a polyelectrolyte-multilayer-modified cellulosic filter paper combined with immunodetection. The M13 bacteriophage was used as a model virus. A visual colour-based detection system, anti-M13 horseradish peroxidase (HRP) conjugate and 3,3',5,5'-tetramethylbenzidine (TMB), was selected to allow semi-quantitative assessment by human eye, or quantitative assessment using a digital scanner. By filtering a volume of 0.50 ml, it was possible to visually detect a concentration of 10(6) pfu/ml. The detection limit was improved to 5×10(4) pfu/ml by increasing the volume of the sample to 100ml. For comparison, it was only possible to detect a concentration of 10(7) pfu/ml using conventional sandwich enzyme-linked immunosorbent assay (ELISA) with the same detection system.Copyright © 2012 Elsevier B.V. All rights reserved.

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