Are antioxidants a part of nutrients?
Antioxidant action is also part of the role of vitamins C,E, folate and beta carotene and also the minerals selenium, manganese, copper and zinc. Much of the marketing of antioxidants concentrates on these nutrients. However, studies of antioxidant minerals and vitamins taken as supplements have been disappointing and it appears that the complex array of antioxidants present naturally in plants as well as those the body produces in reaction to stress may be more important.
Antioxidants and their sources in foodType of antioxidant | Major food sources |
Flavonoids | |
Flavones |
|
Isoflavones |
|
Flavanols (including catechins and proanthocyanidins) | Catechins
|
Flavanones |
|
Flavonols |
|
Anthocyanins |
|
Isothiocyanates | |
Sulphoraphane |
|
Phenolic acids | |
Caffeic acid, ferrulic acid |
|
Sulphides | |
Various allyl sulphides |
|
Vitamins | |
Vitamin C |
|
Folate |
|
Beta carotene |
|
Vitamin E |
|
Minerals | |
Selenium |
|