A microsystem for growth inhibition test of Enterococcus faecalis based on impedance measurement

Research output: Journal contributionsJournal articlesResearchpeer-review

Authors

Bacterial tests such as growth inhibition tests are the only convenient investigation method to detect the impacts of toxic water soluble materials, e.g. antibiotics, on bacteria. The principle of these inhibition tests is the detection of cell numbers by measuring the optical density. With this time consuming cumbersome and complicate method only endpoint detection and no monitoring of cell growth is possible. In this paper we present a conductivity measurement system based on the theory of Maxwell-Fricke. The intention of this work was to reduce the sample volume and have a standard screening platform, therefore we choose the 1536 microtiter plate format without a bottom foil as screening system for the growth inhibition test. The equivalent circuit models of the electrode-electrolyte interface and their influence to biological species were discussed. The presented sensor system in this paper can distinguish living and death cells during the continuous biomass monitoring. © 2006 Elsevier B.V. All rights reserved.
Original languageEnglish
JournalSensors and Actuators B: Chemical
Volume118
Issue number1-2
Pages (from-to)182-191
Number of pages10
ISSN0925-4005
DOIs
Publication statusPublished - 25.10.2006
Externally publishedYes

    Research areas

  • Chemistry - Bioimpedance, Antibiotic testing, Conductivity measurement, Enterococcus faecalis

Recently viewed

Publications

  1. Using an adaptive memory strategy to improve a multistart heuristic for sequencing by hybridization
  2. High temperature deformation mechanisms and processing map for hot working of cast-homogenized Mg-3Sn-2Ca alloy
  3. Assessing pre-travel online destination experience values of destination websites
  4. Analysis of life cycle datasets for the material gold
  5. Using Long-Duration Static Stretch Training to Counteract Strength and Flexibility Deficits in Moderately Trained Participants
  6. Compression behavior of typical silicone rubbers for soft robotics applications at elevated temperatures
  7. Exploring intrinsic, instrumental and relational values for sustainable management of social-ecological systems
  8. Intra-firm Wage Compression and Cost Coverage of Training
  9. Using a Bivariate Polynomial in an EKF for State and Inductance Estimations in the Presence of Saturation Effects to Adaptively Control a PMSM
  10. Combination of a reduced order state observer and an Extended Kalman Filter for Peltier cells
  11. Improving Flood Forecasting in a Developing Country
  12. A transfer operator based numerical investigation of coherent structures in three-dimensional Southern ocean circulation
  13. Investigation of the Controllability of Inductive Power Transmission Systems based on Flexible Coils
  14. Confidence levels and likelihood terms in IPCC reports
  15. Optimal scheduling for Automated Guided Vehicles (AGV) in blocking job-shops
  16. Natural enemy diversity reduces temporal variability in wasp but not bee parasitism
  17. Unusual two‐bond 13C, 13C coupling constants in sulphones
  18. Elastomeric Prepregs for Soft Robotics Applications
  19. Predicting the future performance of soccer players
  20. Open Innovation in Schools
  21. Testing for a break in the persistence in yield spreads of EMU government bonds
  22. CubeQA—question answering on RDF data cubes
  23. Fluorometer controlled apparatus designed for long-duration algal-feeding experiments and environmental effect studies with mussels
  24. Careless responding detection revisited
  25. Selecting methods for ecosystem service assessment
  26. Integrated simulation method for investment decisions of micro production systems
  27. A duty-block network approach for an integrated driver rostering problem in public bus transport
  28. Diversity promotes temporal stability across levels of ecosystem organization in experimental grasslands
  29. Reduction of springback by use of deep drawing tools with locally and temporally varying stiffness