Carotenoids are fat-soluble plant pigments, including the nature of which exhibit provitamin A
: [beta]-carotene, [alpha]-carotene and [beta]-cryptoxanthin.
[beta]-carotene, [beta]-cryptoxanthin and [alpha]-carotene are provitamin A
carotenoids or vitamin A precursors (Wurtzel et al., 2012).
AUSTRALIA -- Scientists in Australia have created golden orange bananas rich in provitamin A
that could save the lives of hundreds of thousands of children who die from a deficiency of this vitamin every year, according to Newsweek.
is best retained when the crops are boiled/steamed in water.
It covers nomenclature, structures, and physical and chemical properties; biosynthesis and metabolism; qualitative and quantitative analyses, including how to conduct each step and various errors; in vitro assays to assess bioaccessibility and antioxidant capacity; carotenoid compositions of foods and influencing factors; the effects of processing and storage on carotenoids; isomerization and oxidation; carotenoids as food colorants and precursors of aroma compounds; bioaccessibility and bioavailability; provitamin A
activity; and carotenoids and their association with reduced risk of chronic diseases.
ISLAMABAD -- A fresh avocado when added to a tomato sauce or raw carrot meal promotes conversion of provitamin A
(inactive vitamin form) to vitamin A (active vitamin form), says a study.
Washington, July 11( ANI ): A new study has revealed that consuming a whole fresh avocado with either an orange-colored tomato sauce or raw carrots significantly enhanced provitamin A
carotenoid (alpha- and beta-carotene) absorption and conversion of these carotenoids to an active form of vitamin A.
This means that both melons appear to be comparable sources of dietary provitamin A
for humans, on par with carrots, which are known to be a major source of provitamin A
The provitamin A
was calculated according to the new conversion factor (IOM, 2001), in which 12 [micro]g of [beta]-carotene and 24 [micro]g of [alpha]-carotene, [alpha]-cryptoxanthin and [beta]-cryptoxanthin correspond to 1 RAE (retinol activity equivalent).
A team of plant geneticists and crop scientists pioneers an economical approach to the selective breeding of corn that can boost levels of provitamin A
, the precursors that are converted to vitamin A upon consumption.
Made from sweet potatoes, the chips are high in beta carotene (provitamin A
) and also contain vitamin C and potassium.