[Chemiluminescent characteristics of ubiquinones].

The paper deals with peculiarities of antioxidative activity of natural antioxidants (exemplified by ubiquinones) which permit their participation in the control of peroxidation intensity of membrane lipids. Ability of different ubiquinone forms to react with peroxide radicals is evaluated by chemiluminescent method. It has been shown that only reduced forms with free hydroxyl groups are highly effective.