Thermalstability of Polyclonal Antibody to Salmonella typhimurium on a Magnetostrictive Sensor Platform

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Thermalstability of polyclonal antibodies to Salmonella typhimurium was investigated by studying the effect of temperature on the binding activity to Salmonella typhimurium using a magnetostrictive platform. Antibodies were immobilized using the Langmuir-Blodgett (LB) technique. Then sensors were stored at temperatures of, 25°C (room temperature), 45°C and 65°C, respectively, and then the ability of these sensors to detect S. typhimurium was tested at a predetermined schedule. Changes in the fundamental resonance frequency of sensors after exposure to 1 ml of 1×109cfu/ml of S. typhimurium were recorded over the testing period. The shift in resonance frequency was attributed to the binding of bacteria to antibody immobilized sensor. The results showed that at each temperature, the binding ability of the antibody to S. typhimurium decreased gradually over the testing period, and the higher the temperature, the lower the longevity of the polyclonal antibody. The longevity of polyclonal antibody on the magnetostrictive sensor platform was about 30, 8 and 5 days at room temperature (25°C), 45°C and 65°C, respectively.

Info:

Periodical:

Advanced Materials Research (Volumes 284-286)

Main Theme:

Edited by:

Xiaoming Sang, Pengcheng Wang, Liqun Ai, Yungang Li and Jinglong Bu

Pages:

1724-1727

DOI:

10.4028/www.scientific.net/AMR.284-286.1724

Citation:

J. Hu et al., "Thermalstability of Polyclonal Antibody to Salmonella typhimurium on a Magnetostrictive Sensor Platform", Advanced Materials Research, Vols. 284-286, pp. 1724-1727, 2011

Online since:

July 2011

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Price:

$35.00

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