Quoted message said:Subject: food coloring made from coal tar?
From: [email hidden] (ziliath)
Date: 4/4/04 5:12 PM Eastern Daylight Time
Message-id: <[email hidden]>
Quoted message said:I'm always in search of the actual facts, not to be
confused with what the media tells me, and I recently read
in a handout from a health food store the following two
interesting claims:
Quoted message said:A. 6 out of 7 major food colors used in the USA are banned
outside of the USA
I cannot comment on this one since this is the first time I
have heard it.
It can very well be true, since the FDA does not do things
the way they are done in the rest of the world.
Quoted message said:B. most food coloring used in the USA is made from coal tar
This one I can comment upon.
Early dyes were made from coal tar chemicals. Today, most
are made from petroleum chemicals.
The key is the following chemical reaction: R-NH2 exposed
to nitrite, NO2, and an acid, usually HCL, hydrochloric
acid, undergoes a reaction to form a diazonium ion, N2+.
This diazonium will bond to an aromatic ring like benzene
or naphthalene, or anthracene, etc. to form a -N=N- bond.
This bond produces chemicals with intense colors, thus
"coal tar" dyes.
All the coal tar dyes have the -N=N- bond as a part of their
chemical structure.
The first azo dye identified as a possible human carcinogen
was "butter yellow". Originally, soy oil butter, was a
white, plastic material and you had to add the dye to it to
make it the color of butter. A Japanese researcher showed
that butter yellow caused liver cancer in rats. That dye was
then replaced with another dye, and today you do not have to
add the dye at all. One of the azo dyes that I produced in
my cancer research produced liver cancer and killed all the
test animals within 30 days.
Never believe that chemicals cannot induce cancer and kill
you within months, even if you are not a mouse or a rat.
Keep in mind that nitrites are added to our foods to prevent
spoilage, particularly pork products. In the stomach you
have the exact conditions set up to produce azo dyes that I
would use in the lab. You have the nitrite, you have the
HCl, you have an abundace of amines, and you have aromatic
rings to bind to.
I say get the nitrites out of our foods.
DrC PhD.