Question

Which of the following is the most effective form (for best absorption) of Vitamin A?

A) Dietary Retinol

B) Supplemental beta-carotene

C) Dietary beta-carotene

D) Dietary alpha-carotene

Answer 1

C) Dietry beta carotene is an important dietary source for vitamin Absorption of beta carotene from plant source ranges 5 to 65 % in human.

sources of beta carotene :- biofortified golden rice , biofortified maize

other sources of provitamin A carotenoids :- Dark green leafy vegetables,yellow vegetables,fruits such as mango ,

papaya ,carrot.

Absorption :- by passive diffusion through the brush border of enterocyte via unidentified energy dependent transporter.