Chrys O. Chikere
Electroanalytical determination of gallic acid in red and white wine samples using cobalt oxide nanoparticles-modified carbon-paste electrodes.
Chikere, Chrys O.; Hobben, Emma; Faisal, Nadimul Haque; Kong-Thoo-Lin, Paul; Fernandez, Carlos
Doctor Nadimul Faisal N.H.Faisal@rgu.ac.uk
Professor Paul Kong Thoo Lin email@example.com
Mr Carlos Fernandez firstname.lastname@example.org
Beverages like wines, have exhibited a high level of antioxidant capacity, specifically from compounds like Gallic acid (GA) and their derivatives. GA has shown great importance in the food industry and pharmaceutical industry as a food additive, anti-tumour, anti-viral, and anti-mutagenic agent. Red and white wines from the USA and Australia were electrochemically analysed for GA, using Cobalt oxide nanoparticles modified carbon paste electrode (CoO-NPs-CPE). The electrochemical studies demonstrated an efficient GA (10 mmol L-1) oxidation, with enhanced peak currents from 302 µA to about 405 µA (25 % increase). The limit of detection (LOD) of the modified electrode was 1.52 x 10-4 mmol L-1 within the concentration range of 1 x 10-4 to 1 x 10-3 mmol L-1. The CoO-NPs-CPE was successfully used, for the quantitative analysis of GA in red and white wine, showing average recoveries of 97% and 101% respectively. Hence our electrode can be applied for GA quantification in wine matrices.
CHIKERE, C.O., HOBBEN, E., FAISAL, N.H., KONG-THOO-LIN, P. and FERNANDEZ, C. 2021. Electroanalytical determination of gallic acid in red and white wine samples using cobalt oxide nanoparticles-modified carbon-paste electrodes. Microchemical journal [online], 160(part B), article ID 105668. Available from: https://doi.org/10.1016/j.microc.2020.105668
|Journal Article Type||Article|
|Acceptance Date||Oct 21, 2020|
|Online Publication Date||Oct 27, 2020|
|Publication Date||Jan 31, 2021|
|Deposit Date||Nov 5, 2020|
|Publicly Available Date||Oct 28, 2021|
|Peer Reviewed||Peer Reviewed|
|Keywords||Cobalt oxide nanoparticles; Carbon paste electrode; Phenolic acids; Gallic acid; Wine samples|
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