Determination of Antidepressants Using Monoamine Oxidase Amperometric Biosensors Based on Screen-Printed Graphite Electrodes Modified with Multi-Walled Carbon Nanotubes
Novel amperometric biosensors based on screen-printed graphite electrodes modified with multi-walled carbon nanotubes (MWCNTs) dispersed in various solvents (chitosan, DMF) and immobilized monoamine oxidase (MAO) were developed for the determination of the antidepressants imipramine and afobazole. I...
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Published in | Pharmaceutical chemistry journal Vol. 48; no. 7; pp. 478 - 482 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Boston
Springer US
01.10.2014
Springer |
Subjects | |
Online Access | Get full text |
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Summary: | Novel amperometric biosensors based on screen-printed graphite electrodes modified with multi-walled carbon nanotubes (MWCNTs) dispersed in various solvents (chitosan, DMF) and immobilized monoamine oxidase (MAO) were developed for the determination of the antidepressants imipramine and afobazole. It was found that afobazole and imipramine inhibited MAO, which allowed these pharmaceuticals to be determined within the concentration range from 0.1 mM to 1 nM by recording the H
2
O
2
oxidation wave when dopamine and epinephrine were used as MAO substrates. The best analytical performance was observed for MAO biosensors modified by MWCNTs in chitosan solution, for which the lower detection limit was 3 – 9 nM. The main active ingredients in melipramine and afobazole preparations were quantified with an RSD of 0.08 using the MAO-based amperometric biosensors. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0091-150X 1573-9031 |
DOI: | 10.1007/s11094-014-1135-2 |