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Date: | Sat, 22 Feb 2003 19:36:19 -0700 |
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From: "Phosphor" <[log in to unmask]>
> "[in] carrot juice there are large quantities of
microelements...b-carotene
> (vitamin A), vitamins B6 and B12)."
>
> this is wrong since there is no vitamin A or B12 in any plant substance.
> [except for some b12 in fermented plant foods derived from the bacteria].
From National Institute of Health article, found at:
http://www.cc.nih.gov/ccc/supplements/vita.html
> Vitamin A is a family of fat-soluble vitamins. Retinol is one of the
> most active, or usable, forms of vitamin A, and is found in animal foods
> such as liver and eggs and in some fortified food products.
>
> Retinol is often called preformed vitamin A. It can be converted to
> retinal and retinoic acid, other active forms of the vitamin A family
> (1-4).
>
> Some plant foods contain darkly colored pigments called provitamin A
> carotenoids that can be converted to vitamin A. In the U.S.,
> approximately 26% and 34% of vitamin A consumed by men and women is
> provided by provitamin A carotenoids (1).
>
> Beta-carotene is a provitamin A carotenoid that is more efficiently
> converted to retinol than other carotenoids (1-4).
>
> For example, alpha-carotene and b-cryptoxanthin are also converted to
> vitamin A, but only half as efficiently as beta-carotene (1).
and later:
> Provitamin A carotenoids are abundant in darkly colored fruits and
> vegetables.
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