Definition of Provitamin a
1. Noun. An orange isomer of an unsaturated hydrocarbon found in many plants; is converted into vitamin A in the liver.
Provitamin A Pictures
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Lexicographical Neighbors of Provitamin A
Literary usage of Provitamin a
Below you will find example usage of this term as found in modern and/or classical literature:
1. Lost Crops of Africa: Volume Ii: Vegetables by National Research Council (U. S.) (2006)
"To maintain a high level of provitamin A level in dried leaves, ... Leaves dried in the sun have only half the provitamin A levels of leaves dried in the ..."
2. Can Food-based Strategies Help Reduce Vitamin A and Iron Deficiencies?: A by Marie T. Ruel (2001)
"Foods rich in provitamin A carotenoids, such as fruits and vegetables, ... Effects of Cooking and Processing on the Retention of provitamin a provitamin a ..."
3. Rice Science: Innovations and Impact for Livelihood by T. W. Mew, International Rice Research Institute (2003)
"Vitamin-A deficiency in rice-depending populations is due to the fact that milled rice is totally devoid of any provitamin A, and that these people are too ..."
4. A Lifelong Passion: Nicholas and Alexandra: Their Own Story by Andrei Maylunas (2005)
"There were no overall significant associations between consumption of vitamin A from animal sources (retinol) and provitamin A from plant sources (carotene) ..."
5. Composition of Foods: Baked Products: Raw, Processed, Prepared (1994)
"The data for vitamin A include chemically determined preformed vitamin A (retinol) and provitamin-A carotenoids from plant products. ..."