Answer: No.
Okay, let me embellish. There is no way that you can add,
switch, or remove one molecule that would make margarine turn into a plastic
bottle. That being said, there are a lot of common misconceptions regarding
margarine and how it measures up to butter.
The Origin of
Margarine
One mailing that circulated in 2005
had this particular preface regarding the origin of this butter imposter:
"Margarine was
originally manufactured to fatten turkeys. When it killed the turkeys, the
people who had put all the money into the research wanted a payback so they put
their heads together to figure out what to do with this product to get their
money back. It was a white substance with no food appeal so they added the
yellow coloring and sold it to people to use in place of butter."
This is not true, well, except for the part where "it was a
white substance with no food appeal." Margarine was created in 1869 for
Napoleon III who offered a prize to anyone who could create a realistic,
low-cost substitute to butter. Originally, it was created using beef fat, but
eventually it was replaced with vegetable oils.
By 1902, 32 U.S. states had prohibited the coloration of the
spread. But in 1950, President Truman repealed the requirement that margarine
be sold in white, which eventually led to the yellow margarine that we know
today.

Butter vs Margarine
Although both can be slathered on toast,
these condiments have some nutritional differences that make them distinct.
Since butter is an animal product, it contains cholesterol, whereas margarine
does not. One tablespoon of butter contains 10% of the recommended daily
allowance of cholesterol.
Some margarine brands contain trans fats, which has been
shown to contribute to diseases. A 1994 study at Harvard University reported
that people who consumed partially hydrogenated oils ran twice the risk of
getting a heart attack than people who ingested significantly lower amounts.
Which do you use: butter or margarine?
Editors Note: I didn't
pick this topic by myself. Thanks go to fellow blogger, frankd20, for
suggesting this blog topic.
Resources
Snopes
– The Butter Truth
MadSci
– Re: Any truth to margarine being close to plastic in molecular structure?
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