Continuous turbidometric measurements of microbial cell density in bioreactors using a light-emitting diode and a photodiode

Autor:	Jens Kirk Thomsen, Mette Miller, Raymond P. Cox, Jørgen Bang Nielsen, Morten Nielsen
Rok vydání:	1989
Předmět:	Microbiology (medical) Light detector Materials science business.industry Analytical chemistry Microbiology Signal law.invention Photodiode law Cell density Bioreactor Optoelectronics Tube (fluid conveyance) business Molecular Biology Diode Light-emitting diode
Zdroj:	Journal of Microbiological Methods. 10:25-31
ISSN:	0167-7012
DOI:	10.1016/0167-7012(89)90043-2
Popis:	A simple device for optimal measurements of the concentration of microbial cells in a bioreactor is described. It consists of a green or red light-emitting diode as light source and a photodiode as light detector. The device can be used for continuous measurements on cell suspensions circulated through a measuring chamber comprised of a tube or viral. The diodes can also be mounted in glass tubes inside a bioreactor for continuous in situ measurements. The use of a biexponential calibration function allows the diode signal to be used to measure cell concentration over a range of more than a factor of 100.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::663248eb1da2e85c20a1f2b87d4901bb https://doi.org/10.1016/0167-7012(89)90043-2 Zobrazit plný text záznamu