Sensitive and Selective Determination of Riboflavin in Food and Pharmaceutical Samples Using Manganese (III) Tetraphenylporphyrin Modified Carbon Paste Electrode

Content Provider	Scilit
Author	Khaloo, Shokooh Sadat Mozaffari, Shahla Alimohammadi, Parisa Kargar, Hadi Ordookhanian, Joliet
Copyright Year	2016
Description	A chemically modified electrode was constructed by incorporating manganese (III) tetraphenyl porphyrine into a carbon paste matrix. The modified electrode was used as a sensitive electrochemical sensor for measuring of riboflavin. The constructed electrode exhibited catalytic properties for the electro-oxidation of riboflavin and lowered the over potential for the oxidation of this compound; consequently, the corresponding peak currents of riboflavin increased significantly. The modified electrode showed a near-Nernstian behavior for electro-oxidation of riboflavin hence, it could be a suitable voltammetric sensor for the fast and easy determination of riboflavin. A linear response in concentration range 1.0 × $10^{−8}$ – 1.0 × $10^{−5}$ M was obtained with a detection limit of 8.0 × $10^{−9}$ M (S /n = 3) for the determination of riboflavin. The electrode showed long-term stability and the standard deviation of the slope obtained after repeated calibration during a period of 3 months was 3.5% (n = 10). The modified electrode was used for differential pulse voltammetric determination of riboflavin in pharmaceutical and food samples.
Related Links	https://www.tandfonline.com/doi/pdf/10.1080/10942912.2015.1130054?needAccess=true
Ending Page	2283
Page Count	12
Starting Page	2272
ISSN	10942912
e-ISSN	15322386
DOI	10.1080/10942912.2015.1130054
Journal	International Journal of Food Properties
Issue Number	10
Volume Number	19
Language	English
Publisher	Informa UK Limited
Publisher Date	2016-10-02
Access Restriction	Open
Subject Keyword	Analytical Chemistry Riboflavin Sensor Electrochemical Carbon Paste Electrode Manganese Tetraphenylporphyrin
Content Type	Text
Resource Type	Article
Subject	Food Science