Journal
OPTICS COMMUNICATIONS
Volume 294, Issue -, Pages 420-426Publisher
ELSEVIER
DOI: 10.1016/j.optcom.2012.12.064
Keywords
SPR; Legionella pneumophila; Immunosensor
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Funding
- European Commission [NMP3-SL-2008-214107-Nanomagma]
- FIRB-Futuro in ricerca
- POR PUGLIA
- Italian project C.I.S.I.A. Conoscenze Integrate per Sostenibilita ed Innovazione del Made in Italy Agroalimentare.
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Detection of legionellae by water sampling is an important factor in epidemiological investigations of Legionnaires' disease and its prevention. To avoid labor-intensive problems with conventional methods, an alternative, highly sensitive and simple method is proposed for detecting L pneumophila in aqueous samples. A compact Surface Plasmon Resonance (SPR) instrumentation prototype, provided with proper microfluidics tools, is built. The developed immunosensor is capable of dynamically following the binding between antigens and the corresponding antibody molecules immobilized on the SPR sensor surface. A proper immobilization strategy is used in this work that makes use of an important efficient step aimed at the orientation of antibodies onto the sensor surface. The feasibility of the integration of SPR-based biosensing setups with microfluidic technologies, resulting in a low-cost and portable biosensor is demonstrated. (C) 2013 Elsevier B.V. All rights reserved.
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