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Título

Sensing bacteria but treating them well: Determination of optimal incubation and storage conditions

AutorBaldrich, Eva; Vigués Frantzen, Núria; Mas Gordi, Jordi; Muñoz Pascual, Francisco Javier
Palabras claveBacteria detection
ELISA assay
Biosensor development
Fecha de publicación12-ago-2008
EditorElsevier
CitaciónAnalytical Biochemistry 383(1): 68-75 (2008)
ResumenBacteria detection in real samples often involves long and tedious methodologies such as culture enrichment, biochemical screening, and serological confirmation. In this context, the development of biosensors and quick assays for bacteria detection appears as fast growing fields. However, a detailed study of reports in these areas reveals the existence of important differences in bacteria storage, handling, and detection conditions, indicating that authors do not take advantage of the well-established procedures existing for classical techniques such as enzyme-linked immunosorbent assay (ELISA). In the current work, we exploit standard ELISA methodology to identify and study diverse parameters that can be critical along the different steps of bacteria detection and sensing. Among others, we studied in detail the effect of the bacterial strain used and the presence of detergent and glycerol in assay performance, as well as the effects of heat inactivation or storing conditions, on bacteria integrity and thus detectability. Finally, we describe the use of “ready-to-use” frozen bacterial pellets as an excellent alternative to the use of daily prepared fresh cultures during assay optimization and preparation of calibration standards. The results presented are also supported by an extensive bibliography search, giving shape to an important compilation of information that will be useful to authors working in a variety of methodologies and sensing formats.
Descripción8 pages, 4 figures, 1 table.-- PMID: 18762161 [PubMed].-- Printed version published Dec 1, 2008.
Versión del editorhttp://dx.doi.org/10.1016/j.ab.2008.08.005
URIhttp://hdl.handle.net/10261/17781
DOI10.1016/j.ab.2008.08.005
ISSN0003-2697
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