Science glossary film: Antioxidant

Antioxidant

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A substance that can protect against damage caused by free radicals.

A substance that can protect against damage caused by free radicals. Free radicals are atoms or groups of atoms with an odd (unpaired) number of electrons. They are produced during normal metabolism, but are harmful oxidising molecules that can damage cells and tissues. Vitamin C and vitamin E are among the antioxidants that animals and plants use to minimise the negative effects of free radicals.

Free radicals are atoms or groups of atoms with an odd (unpaired) number of electrons. They are produced during normal metabolism, but are harmful oxidising molecules that can damage cells and tissues. Vitamin C and vitamin E are among the antioxidants that animals and plants use to minimise the negative effects of free radicals.

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