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Determination of food grade antioxidants using microemulsion electrokinetic chromatography

Citation

Darji, V and Boyce, MC and Bennett, I and Breadmore, MC and Quirino, JP, Determination of food grade antioxidants using microemulsion electrokinetic chromatography, Electrophoresis, 31, (13) pp. 2267-2271. ISSN 0173-0835 (2010) [Refereed Article]


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The definitive published version is available online at: http://interscience.wiley.com

DOI: doi:10.1002/elps.201000050

Abstract

Seven food grade antioxidants were resolved by microemulsion electrokinetic chromatography. The antioxidants included propyl gallate, octyl gallate, dodecyl gallate, butylated hydroxyanisole, butylated hydroxytoluene, tert-butylhydroquinone and -tocopherol. They were resolved in 11 min using a low pH microemulsion containing 20% propan-2-ol. Theoretical plates in the range 39 000-95 000 per length of column (38.5 cm) were recorded for the antioxidants. The LODs were calculated to be in the range 9-44 g/mL (30 s hydrostatic injection and a 50 m id capillary column). The method can also be used to simultaneously analyse for the synthetic preservatives sorbic acid, benzoic acid, salicylic acid and the parabens. The method was successfully applied to noodles for the determination of butylated hydroxytoluene and propyl gallate and to pharmaceutical supplement tablets for -tocopherol. The in-capillary concentration of butylated hydroxytoluene by sweeping was also demonstrated.

Item Details

Item Type:Refereed Article
Keywords:Butylated hydroxytoluene Gallates Preservatives Synthetic antioxidants -Tocopherol
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Separation Science
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Breadmore, MC (Professor Michael Breadmore)
Author:Quirino, JP (Associate Professor Lito Quirino)
ID Code:64302
Year Published:2010
Funding Support:Australian Research Council (DP0984745)
Web of Science® Times Cited:12
Deposited By:Austn Centre for Research in Separation Science
Deposited On:2010-07-15
Last Modified:2011-05-04
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