Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1431067 | Materials Science and Engineering: C | 2008 | 6 Pages |
Abstract
We report the use of ion-selective field effect transistor devices (ISFETs) with an integrated pseudo-reference electrode for on-line monitoring of bacterial metabolism by monitoring of the pH variation. As a model we tested the ability of Lactobacillus strains to ferment sugars, producing lactic acid, which results in a decrease in pH in the suspension medium. We have tested and compared sugar uptake by L. sakei and a L. curvatus strains. The results obtained show that it is possible to distinguish between both types of Lactobacillus strains through their pattern of ribose uptake. The use of ISFETs represents a non-invasive methodology that can be used to monitor biological activity in a wide variety of systems.
Related Topics
Physical Sciences and Engineering
Materials Science
Biomaterials
Authors
M. Castellarnau, N. Zine, J. Bausells, C. Madrid, A. Juárez, J. Samitier, A. Errachid,