Towards a reliable technology for antioxidant capacity and oxidative damage evaluation: Electrochemical (bio)sensors

  • Barroso M
  • de-los-Santos-álvarez N
  • Delerue-Matos C
 et al. 
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To counteract and prevent the deleterious effect of free radicals the living organisms have developed complex endogenous and exogenous antioxidant systems. Several analytical methodologies have been proposed in order to quantify antioxidants in food, beverages and biological fluids. This paper revises the electroanalytical approaches developed for the assessment of the total or individual antioxidant capacity. Four electrochemical sensing approaches have been identified, based on the direct electrochemical detection of antioxidant at bare or chemically modified electrodes, and using enzymatic and DNA-based biosensors. © 2011.

Author-supplied keywords

  • Antioxidants
  • Chemically modified electrode
  • DNA-based biosensor
  • Electrochemistry
  • Enzymatic biosensors
  • Free radicals

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  • José Alberto PereiraPolytechnic Institute of Bragança School of Agriculture

  • M. Fátima Barroso

  • N. de-los-Santos-álvarez

  • C. Delerue-Matos

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