Biosensors as a tool for the antioxidant status evaluation |
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Authors: | L.D. Mello |
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Affiliation: | Instituto de Química, UNICAMP, P.O. Box 6154, 13083-970 Campinas, SP, Brazil |
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Abstract: | Antioxidants are one of the main ingredients that protect food attributes by preventing oxidation that occurs during processing, distribution and end preparation of food. Physiological antioxidant protection involves a variety of chemical system of endogenous and exogenous origin in a multiplicity of pathways. Associate to this, researches have been directed in the development of methods as biosensors that can characterize antioxidants capable of removing harmful radicals in living organisms in an adequate way. Biosensors have represented a broad area of technology useful for environmental, food monitoring, clinical applications and can represent a good alternative method to evaluate the antioxidant status.The demonstration of the highlighted current application of biosensor as a potential tool to evaluate the antioxidant status is the main aim of this review. |
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Keywords: | AA, antioxidant activity AOD, ascorbate oxidase enzyme Aox, antioxidant AscH, ascorbic acid CA, caffeic acid CAT, catalase enzyme CFME, carbon fiber microelectrode CGA, chlorogenic acid CL, chemiluminescence CNT, carbon nanotube Conduct., conductometric CPE, carbon paste electrode Cys, cysteine Cyt. c, cytochrome c D.L., detection limit DHA, dehydroascorbic acid ECL, electrochemiluminescent Fluoresc., fluorescence transducer GAO, galactose oxidase enzyme GCE, glassy carbon electrode GSH-Px, glutathione peroxidase enzyme GSHR, glutathione reductase enzyme GSH-SOx, glutathione sulfhydryl oxidase enzyme GTE, graphite-teflon electrode HRP, horseradish peroxidase MB, methylene blue ME, modified electrode PGE, pyrolytic graphite electrode POD, peroxidase enzyme SAM, self assembly monolayer SGE, spectrographic graphite electrode SPE, screen-printed electrode SOD, superoxide dismutase enzyme tyr, tirosinase enzyme UOD, urate oxidase enzyme UR, uricase enzyme Voltam., voltammetric XOD, xanthine oxidase enzyme |
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