HYDROGENATION AND MARGARINES

As stated above, an oil is unsaturated if the fatty acids contain double bonds. Liquid oils can be hydrogenated, using a nickel catalyst in the saturation process and turned into solid such as margarines. 

In the production of margarines, sunflower, corn, cotton, sesame, soybean and even fish oil can be used as a starting material. 

Margarines are less preferable than oils for good health. Since the melting points of margarines are higher than that of human body temperature, they may cause some coronary diseases. 

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