| Title | A comparative study of protein immobilization techniques for optical immunosensors |
|---|---|
| Publication Type | Articolo su Rivista peer-reviewed |
| Year of Publication | 1992 |
| Authors | Ahluwalia, A., De Rossi D., Ristori C., Schirone Antonio, and Serra G. |
| Journal | Biosensors and Bioelectronics |
| Volume | 7 |
| Pagination | 207-214 |
| ISSN | 09565663 |
| Keywords | Adsorption, Antibodies, article, Avidin, Biological, Biosensing Techniques, Biosensor, Biosensors, bovine, comparative study, Enzyme-Linked Immunosorbent Assay, Films - Langmuir-Blodgett, fluorescence, immunoglobulin G, immunology, Immunology - Sensors, Models, Non-U.S. Gov't, Optical Immunosensors, Optical variables measurement, Optics, priority journal, Prolactin, Protein Immobilization, Proteins, Proteins - Adsorption, Serum Albumin, Silanes, Support, Surface properties, Total Internal Reflection Fluorescence |
| Abstract | This paper presents the results of a study of a number of antibody immobilization techniques for application to optical immunosensors. In particular, well-known methods such as covalent binding and physical adsorption have been extended to the Langmuir-Blodgett method in an attempt to improve the density and possibly the uniformity of orientation of monoclonal antibodies on an optical surface. The surface density of active immobilized antibodies was determined from enzyme immunoassay and their thickness and refractive index were deduced from ellipsometry. It is shown that, although high surface densities (500ng/cm2) of antibody can be obtained, the major obstacle to the detection of low concentrations of antigens or haptens is the non-specific binding of foreign molecules to the sensing surface. © 1992. |
| Notes | cited By 69 |
| URL | https://www.scopus.com/inward/record.uri?eid=2-s2.0-0026552791&doi=10.1016%2f0956-5663%2892%2987017-J&partnerID=40&md5=aeccd394f73a2d788dcb8ba059fd3d36 |
| DOI | 10.1016/0956-5663(92)87017-J |
| Citation Key | Ahluwalia1992207 |
