Table 2 |
|
|
Reactive species scavenged by ascorbic acid |
|
|
Chemical species |
Reaction rate (M-1s-1) |
|
|
|
|
Reactive oxygen species |
|
|
Hydroxyl radical |
1.1 × 1010 |
|
Alkoxyl radical |
1.6 × 109 |
|
Peroxy radical |
1.2 × 106 |
|
Superoxide anion/ hydroperoxy radical |
1.0 × 105 |
|
Reactive nitrogen species |
|
|
Dinitrogen trioxide/dinitrogen tetroxide |
1.2 × 109 |
|
Peroxynitrite/peroxynitrous acid |
235 |
|
Antioxidant derived radicals |
|
|
Alpha-tocopherol radical |
2 × 105 |
|
Urate radical |
1 × 106 |
|
Thiyl/sulphenyl radical |
6 × 108 |
|
|
|
|
Adapted from Carr and Frei [15] |
|
|
Naidu Nutrition Journal 2003 2:7 doi:10.1186/1475-2891-2-7 |
|
