Reactivo Troxol

Reactive Oxygen Species

Species

Name

or

Superoxide radical

ho2-

Perhydroxyl

h2o2

Hydrogen peroxide

HO^

Hydroxyl radical

RO^

R-oxyl radical

ROO^

R-dioxyl radical

substances such as butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), and the water-soluble vitamin E derivative troxol (6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid) noted for their antioxidative activity. Different studies suspect the synthetic antioxidants to cause different diseases, so there has been much interest in the antioxidative activity of naturally occurring substances (Salehi et al., 2005).

To the group of enzymatic antioxidants belongs the manganese- or zinc-containing SOD, the selenium-containing glutathione peroxidase, and the iron-containing catalase. Their capacity is addicted to adequate trace elements and minerals (Schehl et al., 2004). Nonenzymatic antioxidants have to be admitted with food or substitution, for example, a-tocopherol, L-ascorbic acid, b-carotene, and secondary ingredients of plants. Repair enzymes delete damaged molecules and substitute them.

9.1.7 Test Methods

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