...adipose tissue, and in the lipid surface and core of the lipoproteins. The term antioxidant is defined as any substance that, when present at low concentrations compared to those of oxidizable compounds, can delay or prevent the oxidation of that compound (Halliwell, 1996). The term...

...HO*. WHAT MAKES AN ANTIOXIDANT? A broad definition of an antioxidant has been provided by Halliwell; "an antioxidant is any substance that, when present at low concentrations compared with those of an oxidizable substrate, significantly delays or prevents oxidation of that substrate"...

...composed of specialized substances generally called antioxidants. An antioxidant may be defined as "any substance that, when present at low concentrations...significantly delays or inhibits oxidation of that substrate" (Halliwell and Gutteridge, l999, p. l06). A wider definition is "any compound that protects biological...

...definitions of an antioxidant. For example, Halliwell and Gutteridge (3) defined an antioxidant as "any substance that, when present at low concentrations...significantly delays or inhibits oxidation of that substrate." Another definition of an antioxidant (and the one I favor) is that of a metabolic antioxidant (4,5):...

...antioxidant defenses in the vascular wall in atherosclerosis. An antioxidant may be usefully characterized as any substance that, when present at low concentrations...of an oxidizable substrate, significantly delays or prevents oxidation of that substrate (2). It follows that vascular antioxidant defenses must be considered...

...processes in the cell or liquid tissues and thus affect the cell redox potential. Strictly speaking, "an antioxidant is any substance that, when present at low concentrations compared with those of an oxidizible substrate, significantly delays or prevents oxidation of that substrate"1'...

...vivo examination. According to Halliwell and Guneridge [ 19]. who proposed a practicable defmition. an antioxidant is "any substance that. when present...of an oxidizable substrate. significantly delays or prevents oxidation of that substrate," According to this principle. all antioxidant detection methods...

...Board's panel on Dietary Antioxidant and Related Compounds of the NAS has defined an antioxidant as "any substance that, when present at low concentrations compared to those of an oxidizable substrate (eg, proteins, lipids, carbohydrates, and nucleic acids), significantly delays or prevents oxidation...

...damage in vivo would be expected to have an anticancer effect t361. Hence. a broader definition t361 of an antioxidant is any substance that. when present at low concentrations compared with those of an oxidizable substrate. significantly delays or prevents oxidation of that substrate....

...oxidative damage and free radical accumulation. Throughout life we need antioxidants, or substances that when present at low concentrations compared to those of an oxidizable substrate significantly delay or prevent oxidation of that substrate (6). Antioxidants are not strictly required in the diet,...