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| - A type of unsaturated fat, primarily derived from plants, which is usually in a liquid state at room temperature and also when chilled. Polyunsaturated fat helps to lower the overall cholesterol level, but it also reduces HDL or good cholesterol. The main sources of polyunsaturated fats are seeds, nuts, grains, and vegetables. Safflower oil has the highest percentage of polyunsaturated fat of any edible oil.
- In nutrition, polyunsaturated fat, or polyunsaturated fatty acid, are fatty acids in which more than one double bond exists within the representative molecule. That is, the molecule has two or more points on its structure capable of supporting hydrogen atoms not currently part of the structure. Polyunsaturated fatty acids can assume a cis or trans conformation depending on the geometry of the double bond.
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abstract
| - In nutrition, polyunsaturated fat, or polyunsaturated fatty acid, are fatty acids in which more than one double bond exists within the representative molecule. That is, the molecule has two or more points on its structure capable of supporting hydrogen atoms not currently part of the structure. Polyunsaturated fatty acids can assume a cis or trans conformation depending on the geometry of the double bond. The lack of the extra hydrogen atoms on the molecule's surface typically reduces the strength of the compound's intermolecular forces, thus causing the melting point of the compound to be significantly lower. This property can be observed by comparing predominately unsaturated vegetable oils, which remain liquid even at relatively low temperatures, to much more saturated fats such as butter or lard which are mainly solid at room temperature. Trans fats are more similar to saturated fat than are cis fats in many respects, including the fact that they solidify at a higher temperature than cis fats.
- A type of unsaturated fat, primarily derived from plants, which is usually in a liquid state at room temperature and also when chilled. Polyunsaturated fat helps to lower the overall cholesterol level, but it also reduces HDL or good cholesterol. The main sources of polyunsaturated fats are seeds, nuts, grains, and vegetables. Safflower oil has the highest percentage of polyunsaturated fat of any edible oil.
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