- A
provitamin is a
substance that may be
converted within the body to a vitamin. The term
previtamin is a synonym. The term "
provitamin" is used when it...
-
eight isoprene units and thus
having 40 carbons.
Dietary β-carotene is a
provitamin A compound,
converting in the body to
retinol (vitamin A). In foods, it...
- same as in
common rice varieties,
except for the
intended high
levels of
provitamin A. In 2019,
golden rice was
approved for use as
human food and animal...
- is the
alcohol analog of
pantothenic acid (vitamin B5), and is thus a
provitamin of B5. In organisms, it is
quickly oxidized to
pantothenic acid. It is...
- the
action of
ultraviolet light (UV-B or UV-C) on ergosterol, a form of
provitamin D2. Like cholecalciferol,
ergocalciferol is
inactive by itself. It requires...
- Yellow-orange
paprika colors derive primarily from α-carotene and β-carotene (
provitamin A compounds), zeaxanthin,
lutein and β-cryptoxanthin,
whereas red colors...
-
photochemically converted to
vitamin D3 in the skin,
therefore functioning as
provitamin-D3. The
presence of this
compound in
human skin
enables humans to manufacture...
-
organic compounds that
includes retinol,
retinyl esters, and
several provitamin (precursor) carotenoids, most
notably β-carotene (beta-carotene). Vitamin...
-
important targets for drug discovery. In
human nutrition,
ergosterol is a
provitamin form of
vitamin D2;
exposure to
ultraviolet (UV)
light causes a chemical...
-
vitamin A
vitamers which include retinol, retinal,
retinoic acid, and
provitamin carotenoids such as beta-carotene
among others.
Vitamers often have subtly...
