what are partilly hydrogenated fats?

Answer 1

Hydrogenated (or partially hydrogenated) oils have been chemically transformed from their normal liquid state (at room temperature) into solids.

Here's a site that explains it all:

http://www.epicurious.com/cooking/how_to/food_dictionary/entry?id=2484

Answer 2

A liquid oil is infused with hydrogen. This chemical change turns it into a solid. It has no effect on the taste. However it's very unhealthy. Partially Hydrogenated oil clogs up your arteries. It also blocks absorbtion of the healty fats that your body needs. Hydrogenated Oil can save food processors money by allowing them to purchase oil in larger quantities(it doesn't go rancid). McDonalds among others cook your fries in it(shame on Ronald McDonald). There main concern is profit not your health. They try to disguise it on the ingredient label by listing it as, margarine, vegetable shortening or vegetable fat. It is a slow metabolic poison.

Answer 3

Natural or unhydrogenated vegetable oils contain fatty acids that have one or more double bonds. Most vegetable oils are liquid, i.e. are fluid at room temperature. During hydrogenation, a vegetable oil is mixed with a catalyst and hydrogen at elevated temperature. During the process the double bond takes up hydrogen and is altered to a more saturated form. In the process the partially hydrogenated oil's physical properties are changed. It's melting point, for instance, is lowered, and the oil becomes more stable (more resistant to oxidative deterioration).