Partially hydrogenated soybean oil.
nick
dairy and meat, in larger amounts if the animals are allowed to eat
free-range style. From the evidence I've seen, you should be worried about
the soybean oil, not about how much of this oil has been hydrogenated. Read
some of my earlier posts for citations of studies, etc. that discuss how
dangerous unsaturated fats are. Only the highest quality olive oil (and
possibly macadamian oil) seem to be acceptable on a daily basis in more than
tiny amounts. If the oil is made into a trans form, it no longer can be
involved in free radical reactions, and fatty acid researcher/scientist had
the following to say: "Conversion [of substrate omega 3s to DHA/EPA] is
reduced by 40-50 percent in diets lacking in saturated fats and high in
omega-6 fatty acids from commercial vegetable oils (particularly soybean
oil)." That alone is enough reason for me to avoid it. See
http://www.mercola.com/2002/aug/14/con_ola1.htm or
http://www.mercola.com/2002/aug/17/con_ola2.htm
Quentin Grady
On Fri, 30 Aug 2002 17:32:37 -0400, "nick" <sp...@spam.net> wrote:
>That does sound deceptive, but remember that trans fat occurs naturally in
>dairy and meat, in larger amounts if the animals are allowed to eat
>free-range style.
The trans fat found in partially hydrogenated soybean oil is elaidic
acid. The trans fat in dairy products is vaccinic acid. Though they
are both trans fats it doesn't follow that humans have the same issues
with vaccinic acid as they do with elaidic acid.
In cultures where dairying has a long history it is reasonable to
assume mechanisms would have evolved to deal with any problems
associated with vaccinic acid. For what it is worth, the conjugated
linoleic acid, CLA which is thought to be beneficial to humans is
formed from trans fats.
IMHO no culture has had a long enough history to have evolved pathways
to deal with the elaidic acid found in partially hydrogenated
vegetable oils unless there is some naturally occurring source of
which I unaware.
--
Quentin Grady ^ ^ /
New Zealand, >#,#< [
/ \ /\
"... and the blind dog was leading."
Alex Brands
> This post not CC'd by email
> On Fri, 30 Aug 2002 17:32:37 -0400, "nick" <sp...@spam.net> wrote:
>
> >That does sound deceptive, but remember that trans fat occurs naturally in
> >dairy and meat, in larger amounts if the animals are allowed to eat
> >free-range style.
>
> The trans fat found in partially hydrogenated soybean oil is elaidic
> acid. The trans fat in dairy products is vaccinic acid.
Quentin,
I find it difficult to believe that all the trans fats found in partially
hydrogenated soybean oil are the same. Assuming any of the unsaturated
fatty acids could become trans fatty acids, and assuming that any of the
double bonds in the PUFAs could be switched to the trans configuration,
there are many different molecules that could be formed.
Does "elaidic acid" refer to several different molecules?
Alex
Quentin Grady
G'day G'day Alex,
I think it is a bit like called olive oil a mono-unsaturated oil
when we are all aware naturally occurring oils occur as mixtures.
It is my understanding that the most common trans fat in hydrogenated
vegetable oils is elaidic acid and in dairy fats is vaccinic.
As to the other question as to whether elaidic acid refers to one or
more configurations with different locations of the double bond, I
don't know. As I understand it elaidic acid is the trans equivalent
of oleic acid. Since oleic acid is called an omega-9 fatty acid and
has only one double bond I assume that is where the double bond is
situated with elaidic acid.
Of course assumption is the mother of most stuff ups.
Thank you for raising the question.
Perhaps someone knows the answer.
Does oleic acid have a unique position for its double bond?
Quentin Grady
<que...@paradise.net.nz> wrote:
>Since oleic acid is called an omega-9 fatty acid and
>has only one double bond I assume that is where the double bond is
>situated with elaidic acid.
A net search turned up this description of elaidic acid.
NAME elaidic acid
acide elaidique
Elaidinsaure
9-Octadecenoic acid, (E)-
(E)-9-Octadecenoic acid
(E)-Oleic acid
D9-trans-Octadecenoic acid
9-trans-Octadecenoic acid
trans-D9-Octadecenoic acid
trans-9-Octadecenoic acid
trans-Elaidic acid
trans-Oleic acid
FORMULA C18H34O2
Vaccinic acid appears to be a positional isomer with the double bond
at 11 instead of 9. There is a trans and cis vaccinic acid.