:: : The'provitamin'talk is nonsense, like the guys in star trek talking about the photontransmuter overload.
12.
The absorption of provitamins depends greatly on the amount of lipids ingested with the provitamin; lipids increase the uptake of the provitamin.
13.
The absorption of provitamins depends greatly on the amount of lipids ingested with the provitamin; lipids increase the uptake of the provitamin.
14.
The absorption of provitamins depends greatly on the amount of lipids ingested with the provitamin; lipids increase the uptake of the provitamin.
15.
:: Well, " provitamin " actually means a substance which is not a vitamin but which can be metabolically converted to one.
16.
Dried carrots have the highest amount of carotene of any food per 100 gram serving, measured in retinol activity equivalents ( provitamin A equivalents ).
17.
A primary vitamin A deficiency occurs among children and adults who do not consume an adequate intake of provitamin A carotenoids from fruits and vegetables or preformed vitamin A from animal and dairy products.
18.
The color of pumpkins derives from orange carotenoid pigments, including beta-cryptoxanthin, alpha and beta carotene, all of which are provitamin A compounds converted to vitamin A in the body.
19.
Because the conversion of retinol from provitamin carotenoids by the human body is actively regulated by the amount of retinol available to the body, the conversions apply strictly only for vitamin A-deficient humans.
20.
Each ?g RAE corresponds to 1 ?g retinol, 2 ?g of ?-carotene in oil, 12 ?g of " dietary " beta-carotene, or 24 ?g of the three other dietary provitamin-A carotenoids.
