Investigation of some taste substances using a set of electrodes with lipid-modified membranes

A five-channel taste module based on ion-selective electrodes (ISE) with lipid-polymer membranes was constructed. Five different kinds of lipids or their derivatives were used inPVC membranes as substances transforming taste information into electric signals: benzylcetyldimethylammoniurn chloride mo...

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Bibliographic Details
Published in:Desalination 2004-03, Vol.163 (1-3), p.55-59
Main Authors: Szpakowska, M, Szwacki, J, Lisowska-Oleksiak, A
Format: Article
Language:English
Subjects:
Applied sciences
Conducting polymers
Exact sciences and technology
Ion-selective electrodes
Lipid-modified membranes
Pollution
Taste sensors
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Summary:A five-channel taste module based on ion-selective electrodes (ISE) with lipid-polymer membranes was constructed. Five different kinds of lipids or their derivatives were used inPVC membranes as substances transforming taste information into electric signals: benzylcetyldimethylammoniurn chloride monohydrate, hexadecylamine, elaidic acid, 1-dodecanol and oleic acid. The electrode potential in response to sour taste substances — citric, hydrochloric and acetic acids — was examined. It was found that sensitivity of the potential of electrodes containing elaidic acid, 1 -dodecanol or oleic acid in the membrane to citric and hydrochloric acid is very good. Lower sensitivity was observed in the case of acetic acid present in the system. New types of electrodes with conducting PEDT/PSS polymers and oleic acid were tested for sour taste. It was found that stability and reproducibility of electrodes used were very good. The obtained results show that lipid-polymer membranes can be successfully applied as sour taste sensors.
ISSN:0011-9164
1873-4464
DOI:10.1016/S0011-9164(04)90176-2