Multicomponent analysis of fermentation growth media using the electronic tongue (ET)

A potentiometric electronic tongue (ET) consisting of eight cross-sensitive chemical sensors and a standard pH electrode has been applied for analysis of simulated fermentation solutions typical for fermentation processes with Aspergillus niger. The electronic tongue has been found capable of simult...

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Bibliographic Details
Published in:Talanta (Oxford) 2004-10, Vol.64 (3), p.766-772
Main Authors: Legin, A., Kirsanov, D., Rudnitskaya, A., Iversen, J.J.L., Seleznev, B., Esbensen, K.H., Mortensen, J., Houmøller, L.P., Vlasov, Yu
Format: Article
Language:English
Subjects:
Determination of organic acids
Electronic tongue
Fermentation monitoring
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Summary:A potentiometric electronic tongue (ET) consisting of eight cross-sensitive chemical sensors and a standard pH electrode has been applied for analysis of simulated fermentation solutions typical for fermentation processes with Aspergillus niger. The electronic tongue has been found capable of simultaneous determination of ammonium, citrate and oxalate in complex media with good precision (typical error within 8%). The system preserved high sensitivity to the targeted substances also in the presence of sodium azide, which is commonly used for suppressing microbial activity in real-world fermentation samples. Sensor performance was fast and reproducible which promises well for routine application of the electronic tongue for fermentation process monitoring.
ISSN:0039-9140
1873-3573
DOI:10.1016/j.talanta.2004.04.001