· Bioavailability of beta-cryptoxanthin
Compared the apparent absorption of beta-carotene, beta-cryptoxanthin, and alpha-carotene from typical diets.
Beta-cryptoxanthin is much more bioavailable from its major food sources than are beta-carotene or alpha-carotene, the other common vitamin A-forming carotenoids.
This would mean that mandarin oranges, oranges, and a variety of other orange fruits are better sources of vitamin A than has been assumed.
Investigating the absorption and metabolism of beta-cryptoxanthin, and how it forms vitamin A in humans, gerbils, and by chemical simulations.
· Testing biofortified cassava for vitamin A deficiency prevention
Will shortly begin
using biofortified cassava (developed by CIAT in collaboration with HarvestPlus).
These new varieties of cassava have been cultivated to contain high concentrations of beta-carotene.