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

Udgivelsesdato: 20.10 A potentiometric electronic tongue (ET) consisting of eight cross-sensitive chemical sensors and a standard pH electrode has been appliedfor 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.