Let's take a closer look at the different types of fats:
Monounsaturated: These "good" fats are found mainly in plant sources, like nuts, avocados and olive, peanut and canola oils. They are liquid at room temperature.
Polyunsaturated: These fats, which include the healthy omega-3 fatty acids, are also found in plant oils such as safflower, sunflower, corn, flaxseed and canola oils, as well as in seafood.
Polyunsaturated fats are either liquid or soft at room temperature. Essential fatty acids — alpha-linolenic and linoleic acid — are also in the polyunsaturated group. These fats, which we need to get from the foods we eat, are necessary for the creation of cell walls and hormones in the body.
Saturated: These fats are found mostly in animal products. Red meat, poultry, cheese, butter and other dairy products are the main sources. Some plant products like palm, coconut and palm kernel oil are also saturated. These fats are solid at room temperature.
Trans-: This type of fat is formed when unsaturated vegetable oils are hydrogenated (or partially hydrogenated) to form solid, more stable fats. Hydrogen atoms are actually added to the oils. Trans-fats include margarine and shortening and are found in everything from crackers, cookies, doughnuts, frozen pie crusts, deep-fried foods, and foods with chocolate coatings.
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