| 光谱学与光谱分析 |
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| Study of Regeneration Based on SERS Labelled Immunoassay |
| GE Ming1, 2, YAO Jian-lin1, SUN Ru1, GU Ren-ao1* |
1. College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
2. College of Chemistry and Chemical Engineering, Nantong University, Nantong 226001, China |
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Abstract Labelled immunoassay by surface enhanced Raman scattering(SERS) has great research and application value. It combines SERS which has the high sensitivity and high selectivity with specific adsorption in immunology. The present paper mainly studies the regeneration about SERS labelled immunoassay, striving to develop the recycling value of it. The authors used glycine-HCl eluent for the sandwich structure including solid matrix antibody, antigen and labelled immuno-gold colloids, then the authors had got expected result. The complex of antibody and antigen would be separated by changing the pH scale. It could elute the most antigen and the labelled immuno-gold colloids. Also the authors could assemble it again and distinguish the characteristic SERS spectrum of the reporter molecules. Under this condition, we researched the stability and reusing of this technology. The authors found that it has better stability and it retained activity after 10 recycles of applications.
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Received: 2009-09-02
Accepted: 2009-12-06
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Corresponding Authors:
GU Ren-ao
E-mail: ragu@suda.edu.cn
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