Electronic continuous growth follow-up of microbial cultures

Author

Madrid, Rossana E. ; Felice, Carmelo J. ; Valentinuzzi, Max E.

Author_Institution

Inst. de Bioeng., Univ. Nacional de Tucuman, Tucuman, Argentina

Volume

6

fYear

1997

fDate

30 Oct-2 Nov 1997

Firstpage

2575

Abstract

An apparatus for the measurement of bacterial growth is described. This instrument applies an alternate adequate current of two different frequencies through a pair of electrodes immersed in a cultured medium. It monitors, detects and quantifies the growth of microorganisms based on the measurement of the impedance across the two electrodes, from which medium conductivity and interface electrode impedance changes can be dissected out. The variation of these parameters are proportional to bacterial growth. They are processed by this computer controlled apparatus and displayed on a monitor showing bulk resistance and electrode impedance variations as time course events

Keywords

bioelectric phenomena; biological techniques; biomedical electronics; cellular biophysics; computerised instrumentation; electric impedance measurement; microorganisms; alternate adequate current; bacterial growth measurement apparatus; bulk resistance; computer controlled apparatus; cultured medium; electrode impedance variations; electronic continuous growth follow-up; immersed electrodes; interface electrode impedance changes; medium conductivity; microbial cultures; parameters variation; time course events; Computer displays; Conductivity; Electric variables measurement; Electrical resistance measurement; Electrodes; Frequency; Impedance measurement; Instruments; Microorganisms; Space technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE

Conference_Location

Chicago, IL

ISSN

1094-687X

Print_ISBN

0-7803-4262-3

Type

conf

DOI

10.1109/IEMBS.1997.756857

Filename

756857