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Trans fat can be found in some of the same foods as saturated fat, such as vegetable shortenings, some margarines, crackers, candies, cookies, snack foods, the fat man fried foods, baked goods, and other processed foods made with partially hydrogenated vegetable oils. Trans fat is made when hydrogen is added to vegetable oil -- a process called hydrogenation. Hydrogenation increases the shelf life and flavor stability of foods containing these fats. Usually the hydrogen atoms at a double bond are positioned on the same the fat man side of the carbon chain. However, partial the fat man hydrogenation reconfigures some double bonds and the hydrogen atoms end up on different sides of the chain. This type of configuration is called "trans" (means "across" in Latin). The structure of a trans unsaturated chemical bond looks like the diagram below. Trans Fat (i.e., trans fatty acids) H | -C=C- | H Hydrogen atoms are on opposite sides of the chain of carbon atoms at the carbon-carbon double bond.
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