Thanks again, Marshall. In one study done way back in the 80's? it
was shown that toxins in plastic wrap migrate into the foods they are
storing. It also showed that polyethelene was the only one that had
much lesser rates of transmission. Original Saran Wrap was the only
commercially available plastic wrap that used poly, reynolds wrap used
pvc, I think.
Many people I know tin foil (aluminum wrap) instead for sandwiches, and
use glass for almost everything else.
In some other reading I did recently on transmission of heavy metals
from pan into food, it was shown that it was temperature dependent, and
of course longer times allowed more migration. That is also true of the
migration from plastics into food, so using plastic wrap in direct
contact with food in a microwave is a very big no-no. If we can
exptrapolate a little, then using plastic for cooking in general can be
unsafe, and perhaps even storing food in any kind of plastic is a bad
idea.
As you said, there are many estrogen mimics in these kinds of things,
and in addition, many of the toxins are fat soluble, so migration into
fatty foods at room temp is possible.
kathryn
On Oct 31, 2008, at 10:11 AM, Marshall Dudley wrote:
Melamine plastic is no different than any other plastic. They are
almost all formed from toxic monomers, catalysts, or give off toxic
compounds when curing. PVC is made from very toxic vinyl chloride,
acrylic from toxic methyl methacrylate, polyethylene from highly
poisonous ethylene, polystyrene from highly toxic styrene, polyester
from polyester resin, toxic styrene and methyl ethyl keytone peroxide
which is especially nasty. Then you have things like polyurethane
which is basically made from urine, but forms formaldehyde when it
cures and outgasses heavily. In addition many plastics, such as PVC
(but not melamine) have plasticizers in them that diffuse out and are
mimics of estrogen. Melamine and polyethylene are probably the least
problematical of these as far as having anything left over which might
diffuse out later, and Melamine probably has the least toxic monomer
of any of them. So I don't understand the criticism of melamine when
most of the other plastics are really much worse.
Marshall
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