Electronic measurement of bacterial growth
- 1 June 1978
- journal article
- research article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 11 (6), 560-568
- https://doi.org/10.1088/0022-3735/11/6/017
Abstract
The growth and multiplication of bacterial cells in a nutrient medium can be monitored by measuring changes in the AC conductivity at constant temperature produced by charged metabolites; the method is faster, more accurate and requires less labour than traditional viable counting. Two instruments are described; one presents conductance changes directly on a chart recorder; the other can handle up to 128 samples at a time, and normally feeds the data to a computer for processing. Methods of obtaining bacteriological parameters (mean generation time, lag time, inoculum number, etc.) from conductivity measurements are briefly described.Keywords
This publication has 8 references indexed in Scilit:
- Extended Monod equation for batch cultures with multiple exponential phasesBiotechnology & Bioengineering, 1975
- Antibacterial Effects of Silver Electrodes with Weak Direct CurrentAntimicrobial Agents and Chemotherapy, 1974
- The design and some applications of sensitive capacitance micrometersJournal of Physics E: Scientific Instruments, 1973
- The Use of Semi-automatic Pipettes in the Viable Counting of BacteriaJournal of Applied Bacteriology, 1973
- Capacitor-fed parallel ‘chopper’ as a phase-sensitive demodulatorProceedings of the Institution of Electrical Engineers, 1971
- Alternating current electrode polarizationRadiation and Environmental Biophysics, 1966
- Convenient Plot for Exponential Functions with Unknown AsymptotesJournal of Applied Physics, 1959
- Radio-frequency Dielectric Properties of Dehydrated Carrots. Application to Moisture Determination by Electrical MethodsThe Journal of Physical Chemistry, 1945