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Structural and functional stabilization of phage particles in carbohydrate matrices for bacterial biosensing

Paper ID Volume ID Publish Year Pages File Format Full-Text
17180 42649 2013 15 PDF Available
Title
Structural and functional stabilization of phage particles in carbohydrate matrices for bacterial biosensing
Abstract

•Carbohydrate polymeric matrices were optimized for phage immobilization.•Phages were structurally and functionally stabilized in carbohydrate matrices.•Optimized hydrogels were successfully employed at lab-scale bacterial biosensing.

Infections associated with health care services are nowadays widespread and, associated to the progressive emergence of microorganisms resistant to conventional chemical antibiotics, are major causes of morbidity and mortality. One of the most representative microorganisms in this scenario is the bacterium Pseudomonas aeruginosa, which alone is responsible for ca. 13–15% of all nosocomial infections. Bacteriophages have been reported as a potentially useful tool in the diagnosis of bacterial diseases, since they specifically recognize and lyse bacterial isolates thus confirming the presence of viable cells. In the present research effort, immobilization of these biological (although metabolically inert) entities was achieved via entrapment within (optimized) porous (bio)polymeric matrices of alginate and agar, aiming at their full structural and functional stabilization. Such phage-impregnated polymeric matrices are intended for future use as chromogenic hydrogels sensitive to color changes evolving from reaction with (released) intracytoplasmatic moieties, as a detection kit for P. aeruginosa cells.

Keywords
Bacteriophage; Immobilization; Structural/functional stabilization; Bacterial detection; Biopolymeric matrix; Carbohydrate hydrogel
First Page Preview
Structural and functional stabilization of phage particles in carbohydrate matrices for bacterial biosensing
Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 53, Issue 1, 10 June 2013, Pages 55–69
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering