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Table 2 Reactive species scavenged by ascorbic acid

From: Vitamin C in human health and disease is still a mystery? An overview

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

  1. Adapted from Carr and Frei [15]