Determination of phenolic antioxidants by micellar electrokinetic capillary chromatography with electrochemical detection

Guan, Yueqing; Chu, Qingcui; Fu, Liang; Wu, Ting; Ye, Jiannong

doi:10.1016/j.foodchem.2005.01.015

Cited by 73 publications

(35 citation statements)

References 12 publications

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“…MEKC has recently been applied with different detection systems to determine the content of these compounds in foods. Simultaneous determination of propyl gallate (PG), tert-butylhydroquinone (TBHQ), butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) has been carried out by MEKC with electrochemical detection (ED) [51]. Effects of the potential of the working electrode, pH of the BGE, SDS concentration, injection time, and separation voltage on MEKC-ED were investigaded.…”

Section: Phenols Polyphenols and Pigmentsmentioning

confidence: 99%

Recent advances in the application of capillary electromigration methods for food analysis

Cifuentes¹

2006

Electrophoresis

150

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Section: Phenols Polyphenols and Pigmentsmentioning

confidence: 99%

Recent advances in the application of capillary electromigration methods for food analysis

Cifuentes¹

2006

Electrophoresis

150

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“…Various methods such as spectrophotometry (Prasad et al 1987), liquid chromatography (HPLC) coupled with different detection systems (Ruiz et al 1999;Tagliabue et al 2004), gas chromatography (González et al 1998), micellar electrokinetic capillary chromatography (Guan et al 2006) etc. have been reported in literature for the determination of BHA in oils and fats.…”

Section: Introductionmentioning

confidence: 99%

Study of kinetic parameters and development of a voltammetric sensor for the determination of butylated hydroxyanisole (BHA) in oil samples

et al. 2015

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Electrochemical behavior of artificial antioxidant, butylated hydroxyanisole (BHA), was investigated at a glassy carbon electrode modified with poly L-cysteine [poly (LCys/GCE)]. BHA exhibits a pair of well -defined redox peak on L-cysteine modified GCE with E pa =69 mV and E pc = 4 mV. The modified electrode showed good electrocatalytic activity towards the oxidation of BHA under optimal conditions and exhibited a linear response in the range from 1.0× 10 −5 to 1.0×10 −6 M with a correlation coefficient of 0.998. The limit of detection was found to be 4.1×10 −7 M. The kinetics parameters of the proposed sensor such as heterogeneous electron transfer rate, k s , and charge transfer coefficient, α, was calculated and found to be 1.20 s −1 and 0.575 respectively. The average surface concentration of BHA on the surface of poly (L-Cys/GCE) was calculated to be 3.18 × 10 −4 mol cm −2 . The analytical utility of the proposed sensor was evaluated by the successful determination of BHA in coconut oil and sesame oil samples.

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“…Gas chromatography with various detection methods [27][28][29][30] is an alternative available way for antioxidants determination. The GC-MS technique [31] or micellar electrokinetic capillary chromatography [32,33] was applied successfully. All the above-mentioned methods were developed in order to determine antioxidants in samples of foodstuffs, pharmaceuticals and cosmetics.…”

Section: Central European Journal Of Chemistrymentioning

confidence: 99%

Differentiation between phenol- and amino-substances in voltammetry determination of synthetic antioxidants in oils

et al. 2010

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Abstract:The paper describes a method of voltammetric determination of antioxidants in lubricating oils developed with the use of Linear Sweep Voltammetry (LSV) and Fast Scan Differential Pulse Voltammetry (FSDPV). Experimental conditions have been found for simultaneous determination of phenol-based antioxidants and amino-antioxidants: the phenols can be electrochemically oxidized using the polarisation of gold disc electrode (AuDE) in the potential range of 0-1400 mV in 0.2 M H 2 SO 4 in the presence of ethanol and acetonitrile at the ratio of 3:1. Secondary aromatic amines can be determined directly in this supporting electrolyte; the presence of phenolic antioxidants does not interfere with this analysis. On the other hand, secondary aromatic amines interfere with the determination of phenolic substances; therefore, the amines present have to be eliminated in a suitable way. A procedure for masking the aromatic amines using their reaction with nitrous acid has been suggested and optimised. The nitrosamines thus formed can be used for sensitive and selective determination of amino-antioxidants by means of cathodic reduction on the hanging mercury drop electrode (HMDE) using Fast Scan Differential Pulse Voltammetry. The method was applied in analysis of real samples of lubricating oils. © Versita Sp. z o.o.

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Determination of phenolic antioxidants by micellar electrokinetic capillary chromatography with electrochemical detection

Cited by 73 publications

References 12 publications

Recent advances in the application of capillary electromigration methods for food analysis

Recent advances in the application of capillary electromigration methods for food analysis

Study of kinetic parameters and development of a voltammetric sensor for the determination of butylated hydroxyanisole (BHA) in oil samples

Differentiation between phenol- and amino-substances in voltammetry determination of synthetic antioxidants in oils

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