Electrochemical Determination of Morin in Natural Food Using a Chitosan-Graphene Glassy Carbon Modified Electrode.
Edgar NaglesMonica BelloJohn J HurtadoPublished in: Sensors (Basel, Switzerland) (2022)
This report presents a new application for the chitosan-graphene glassy carbon electrode (Ch-G/GCE) system in the determination of the hydroxyflavonoid morin (MR), one of the flavonoids with the highest favorable activity for people, due to its natural properties by square-wave voltammetry (SWV). The anodic peak current for MR was observed at 0.50 V with an increase of 73% compared with the glassy carbon electrode unmodified. The surface areas of Ch-G/GCE, Ch/GCE and GCE evaluated by cyclic voltammetry were 0.140, 0.053 and 0.011 cm 2 , respectively. Additionally, an increase greater than 100% compared to the electrode without modification was observed. The detection limit was 0.30 µmol/L for MR, and the relative standard deviations (RSDs) were 1.8% ( n = 6). Possible interferences as quercetin, rutin, and applications in real samples were also evaluated with very acceptable results.
Keyphrases
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- ionic liquid
- gold nanoparticles
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- mass spectrometry
- climate change
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- high resolution
- simultaneous determination
- tandem mass spectrometry