How Margarine and Shortenings are Made
- Vincent A. Demonbreun
- Nov 7, 2019
- 1 min read

Manufacturers start with the cheapest seed oils, extracted at high temperatures and pressures from corn, cottonseed, soybeans, safflower seeds, and canola
The last fraction of oil is removed with hexane, a toxic solvent
The oild, already rancid from the extraction process, are cleaned. This destroys the vitamins and antioxidants, but pesticides and solvents remain
The oils are mixed with a finely ground nickel catalyst
The oils are then put in a reactor where at high temperatures and pressures, they are flooded with hydrogen gas. The molecular structure is rearraged. What goes into the reactor is a liquid oil, what comes out is a smelly, lumpy, grey semi-solid
Soap-like emulsifiers are mixed in to remove all the lumps
The oil is steamed clean again to remove the odor of chemicals
The oil is bleached to get rid of the grey color
Synthetic vitamins and artificial flavors are mixed in
A natural yellow color is added to margarine because synthetic coloring is not allowed
The mixture is packaged in blocks or tubs and promoted to the public as a health food




















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