Review Article
Effect of Supplementation with Antioxidants on the Quality of Bovine Milk and Meat Production
Table 1
Antioxidant systems found in mammalian cells [
6].
| Component (location in cell) | Nutrients involved | Function |
| Superoxide dismutase (cytosol) | Cu and Zn | An enzyme that converts superoxide to hydrogen peroxide | Superoxide dismutase (mitochondria) | Mn and Zn | An enzyme that converts superoxide to hydrogen peroxide | Ceruloplasmin | Cu | An antioxidant protein may prevent copper from participating in oxidation reactions | Glutathione peroxidase (cytosol) | Se | An enzyme that converts hydrogen peroxide to water | Catalase (cytosol) | Fe | An enzyme (primarily in liver) that converts hydrogen peroxide to water | -Tocopherol (membranes) | Vitamin E | Breaks fatty acid peroxidation chain reactions | β-Carotene (membranes) | Vitamin A | Prevents initiation of fatty acid peroxidation chain reactions |
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