Which of the following is/are a dietaryantioxidant(s)?
A. Vitamin C
B. Lipoic acid
C. Vitamin K
D. Beta-carotene
E. Vitamin E
A. Vitamin C
B. Lipoic acid
C. Vitamin K
D. Beta-carotene
E. Vitamin E
Ans. A,B,D,E
Dietary antioxidants include the
micronutrients vitamin C, vitamin E, beta-carotene and the polyphenols.
Beta-carotene and vitamins E and C have been well studied, possess strong
antioxidant activities and are well absorbed, with a relatively high
bioavailability. On the other hand, the polyphenols are a complex family of
molecules, ubiquitous in plants, and include the flavonoids and phenolic
acids.Commonly occurring flavonoids are quercetin derivatives (onion, apple),
catechins (tea), anthocyanins (berries) and hesperitin derivatives (citrus
fruits), while commonly occurring phenolic acids are caffeic acid, occurring in
many fruit and vegetable and chlorogenic acid (coffee).
