Graphite nanocomposites sensor for multiplex detection of antioxidants in food

Ng, K.L. and Tan, G.H. and Khor, S.M. (2017) Graphite nanocomposites sensor for multiplex detection of antioxidants in food. Food Chemistry, 237. pp. 912-920. ISSN 0308-8146, DOI DOI: 10.1016/j.foodchem.2017.06.029.

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Butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), and tert-butylhydroquinone (TBHQ) are synthetic antioxidants used in the food industry. Herein, we describe the development of a novel graphite nanocomposite-based electrochemical sensor for the multiplex detection and measurement of BHA, BHT, and TBHQ levels in complex food samples using a linear sweep voltammetry technique. Moreover, our newly established analytical method exhibited good sensitivity, limit of detection, limit of quantitation, and selectivity. The accuracy and reliability of analytical results were challenged by method validation and comparison with the results of the liquid chromatography method, where a linear correlation of more than 0.99 was achieved. The addition of sodium dodecyl sulfate as supporting additive further enhanced the LSV response (anodic peak current, Ipa) of BHA and BHT by 2- and 20-times, respectively.

Item Type: Article
Funders: University of Malaya post graduate grant (PPP) PG177-2014B, UMRG-Programme RP012C-14SUS, Fundamental Research Grant Scheme (FRGS) from the Ministry of Higher Education of Malaysia (MOHE) FP041-2016
Uncontrolled Keywords: Antioxidants; Butylated hydroxyanisole; Graphite; Liquid chromatography; Multiplexing; Nanocomposites; Sodium; Sodium dodecyl sulfate; Sodium sulfate; Voltammetry
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Department of Chemistry
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 20 Jul 2017 02:09
Last Modified: 20 Jul 2017 02:09

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