Investigation of Measurement Methods of Antioxidant Activity and Involved Mechanisms

Ardestani, S. Berenji; Sahari, Mohammad Ali

doi:10.2174/9789815040586122090008

Cited by 3 publications

(1 citation statement)

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“…[ 2 , 5 ] AA can also inhibit lipid peroxidation reacting with peroxyl radicals and oxo‐ferry complex. [6] It is also involved in several enzymatic reactions and in the organism‘s defense mechanisms against several pathologies. [7] …”

Section: Introductionmentioning

confidence: 99%

A Carbon Paste Electrode Modified by Bentonite and l‐Cysteine for Simultaneous Determination of Ascorbic and Uric Acids: Application in Biological Fluids

et al. 2023

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A novel modification of a paste carbon electrode by Bentonite (Bent) and l ‐Cysteine ( l ‐Cyst) was carried out for uric acid (UA) and ascorbic acid (AA) detection and quantification. Morphological and compositional characterization of the electrode surface were carried out using electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and energy dispersive X‐ray spectroscopic analysis (EDS). Cyclic voltammetry (CV) and square wave voltammetry (SWV) techniques were used to analyze UA and AA. The obtained sensor shows a good stability, sensibility, selectivity, and regeneration ability. Accordingly, the limit of detection (LOD) is found to be 0.031 μ m and 9.6 μ m for UA and AA, respectively. A good linearity in the range of 0.1 to 100 μ m for UA and 10 to 1000 μ m for AA was obtained. The peak‐to‐peak separation of UA‐AA (Δ E UA‐AA ) was determined to be 330 mV. In addition, the sensor is applied successfully to monitor UA and AA in serum samples.

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