Identification of phenolic constituents in commercial beverages by liquid chromatography with electrochemical detection

Roston, Daryl A.; Kissinger, Peter T.

doi:10.1021/ac00234a033

Cited by 119 publications

(44 citation statements)

References 9 publications

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“…The Coulochem II electrochemical detector with two coulometric detection cells in series was used for the HPLC analysis of phenolic compounds and flavonoids in beer with mobile phases containing formic acid [8,9] or acetic acid [7,15] in aqueous methanol or acetonitrile as the mobile phase.…”

Section: Introductionmentioning

confidence: 99%

RP‐HPLC analysis of phenolic compounds and flavonoids in beverages and plant extracts using a CoulArray detector

Jandera¹,

Škeříková²,

Řehová³

et al. 2005

J of Separation Science

109

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Methods were developed for the analysis of natural antioxidants including phenolic compounds and flavonoids in beverages and plant extracts using gradient HPLC with multi-channel electrochemical coulometric detection. Suitability of various reversed-phase columns for this purpose was compared; pH and mobile phase gradients were optimized with respect to the separation selectivity and sensitivity of detection. Because of different target compounds in various sample types, the overlapping resolution maps and the normalized resolution product approaches described earlier were used to select optimum columns and gradients to suit the analysis of the individual sample types. The methods were applied to the analysis of phenolic compounds and flavonoids in beer, wine, tea, and yacon extracts. 32 phenolic compounds were identified and determined, including derivatives of benzoic and cinnamic acids, flavones, and a few related glycosides. Eight-channel CoulArray detection offers high selectivity and sensitivity with limits of detection in the low microg L(-1) range, at least an order of magnitude lower than single-channel coulometric detection using the Coulochem detector. No special sample pretreatment is necessary and, because of the compatibility of the CoulArray detector with gradient elution, phenolic antioxidants of different polarities can be determined in a single run. In addition to the retention times, the ratios of the areas of the pre-dominant and post-dominant peaks to the area of the dominant peak can be used for improved identification of natural antioxidants.

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Section: Introductionmentioning

confidence: 99%

RP‐HPLC analysis of phenolic compounds and flavonoids in beverages and plant extracts using a CoulArray detector

Jandera¹,

Škeříková²,

Řehová³

et al. 2005

J of Separation Science

109

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show abstract

“…The principle of these detectors is based on an electron transfer reaction during the oxidation/reduction process of a target analyte, after its separation in a chromatography column, at a millimetric/centimetric solid electrode for the major part of the modern systems [2] and [3].…”

Section: Introductionmentioning

confidence: 99%

Boron doped diamond microelectrodes arrays for electrochemical detection in HPLC

Mahé

Devilliers

Dardoize

2015

Talanta

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To cite this version:Eric Mahé, Didier Devilliers, François Dardoize. Boron doped diamond microelectrodes arrays for electrochemical detection in HPLC. Talanta, Elsevier, 2015, 132, pp.641 -647 Highlights•Boron-doped diamond microelectrodes arrays have been used as sensors for HPLC.•These amperometric sensors have a good signal/noise ratio.•Spacing, disposition and number of the microelectrodes have been studied, as well as influence of flow velocity. AbstractBoron doped diamond microelectrodes arrays (MEA) have been prepared in order to be used as new

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“…Soil and surface water of areas around formal production and processing plants are often contaminated by phenol with risk to ground water resources. Moreover, the quality of foods is also related to the presence of phenol substance in its composition mainly in beverages and juice [1]. Hence, a selective and sensitive detection of phenol is very important for controlling its concentration.…”

Section: Introductionmentioning

confidence: 99%

Detection of Trace Phenol Based on Mesoporous Silica Derived Tyrosinase‐Peroxidase Biosensor

Dai

et al. 2005

Electroanalysis

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A novel electrochemical biosensor for phenol based on immobilization of tyrosinase-peroxidase on mesoporous silica is described. The enhanced sensitivity of the tyrosinase-horseradish peroxidase based biosensor to phenol was observed on comparing with tyrosinase or horseradish peroxidase monoenzyme modified electrodes. Two enzymes retained their enzymatic activities for phenol determination without any mediator. The preparation conditions of the biosensor are discussed. Optimization of the experimental parameters was performed with regard to pH and operating potential. The phenol sensor exhibited a fast response of less than 10 seconds. The sensitivity of the biosensor for phenol was 14 mA mM À1 cm À2 with a linear range from 2 Â 10 À7 to 2.3 Â 10 À4 M and a detection limit of 4.1 Â 10 À9 M. The biosensor showed a good stability and reproducibility.

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Identification of phenolic constituents in commercial beverages by liquid chromatography with electrochemical detection

Cited by 119 publications

References 9 publications

RP‐HPLC analysis of phenolic compounds and flavonoids in beverages and plant extracts using a CoulArray detector

RP‐HPLC analysis of phenolic compounds and flavonoids in beverages and plant extracts using a CoulArray detector

Boron doped diamond microelectrodes arrays for electrochemical detection in HPLC

Detection of Trace Phenol Based on Mesoporous Silica Derived Tyrosinase‐Peroxidase Biosensor

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