Dictionary » P » Provitamin a

Provitamin a

provitamin A

trivial name for carotenoids exhibiting qualitatively the biological activity of beta-carotene, i.e., vitamin A precursors (alpha-, beta-, and gamma-carotene and cryptoxanthin); contained in fish liver oils, spinach, carrots, egg yolk, milk products, and other green leaf or yellow vegetables and fruits.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Re:

... A's RDA, because it's soluble in fats and thus is not excreted from your body, but rather stored in your adipose tissues. And beta-caroten is provitamin A. By it's cleavage is the vit A produced. Thanks for the info Jackbean! That makes sense... I'm just wondering though, how do the manufacturers ...

See entire post
by billyboy
Fri Feb 11, 2011 7:28 pm
 
Forum: Microbiology
Topic: Is Spirulina really good for our health ?
Replies: 38
Views: 148151

Is Spirulina really good for our health ?

... A's RDA, because it's soluble in fats and thus is not excreted from your body, but rather stored in your adipose tissues. And beta-caroten is provitamin A. By it's cleavage is the vit A produced.

See entire post
by JackBean
Thu Feb 10, 2011 11:28 am
 
Forum: Microbiology
Topic: Is Spirulina really good for our health ?
Replies: 38
Views: 148151

Gene, Enzyme

... and is only expressed in the endosperm. phytoene synthase catalyzes the reaction that convertss two GGDP molecules to phytoene, the first step in provitamin - A synthesis." IS the gene Phytoene Synthase? is it both enzyme and a gene.

See entire post
by ngfok
Thu Mar 16, 2006 12:33 am
 
Forum: Genetics
Topic: Gene, Enzyme
Replies: 4
Views: 2604

Is Golden Rice dangerous ?

... of Vitamin A are not enough to meet the daily requirements unless more than 5 pounds is consumed EVERY DAY. There is also no evidence that the provitamin in the rice can be absorbed and used in the body. There are other crops (dark green leafy veggies) that can be used to meet the dietary needs. ...

See entire post
by eluned
Thu Jul 14, 2005 10:19 pm
 
Forum: Botany Discussion
Topic: Is Golden Rice dangerous ?
Replies: 17
Views: 9397


This page was last modified 21:16, 3 October 2005. This page has been accessed 625 times. 
What links here | Related changes | Permanent link