In the food industry, oils are artificially hydrogenated to make them semi-solid and of a consistency desirable for many processed food products. During this hydrogenation process, gas is bubbled through oils to solidify them, and the double bonds of the cis-conformation in the hydrocarbon chain may be converted to double bonds in the trans-conformation.
Margarine, some types of peanut butter, and shortening are examples of artificially-hydrogenated trans fats. Many fast food restaurants have recently banned the use of trans fats, and food labels are required to display the trans fat content. Essential fatty acids are fatty acids required for biological processes, but not synthesized by the human body. Consequently, they have to be supplemented through ingestion via the diet and are nutritionally very important.
Omega-3 fatty acid, or alpha-linoleic acid ALA , falls into this category and is one of only two fatty acids known to be essential for humans the other being omega-6 fatty acid, or linoleic acid. These polyunsaturated fatty acids are called omega-3 because the third carbon from the end of the hydrocarbon chain is connected to its neighboring carbon by a double bond.
Salmon, trout, and tuna are good sources of omega-3 fatty acids. Research indicates that omega-3 fatty acids reduce the risk of sudden death from heart attacks, reduce triglycerides in the blood, lower blood pressure, and prevent thrombosis by inhibiting blood clotting. They also reduce inflammation and may help reduce the risk of some cancers in animals. Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:.
Skip to main content. Search for:. Lipid Molecules. A typical fat or oil will, of course, be a mixture of different triacylglycerols, but the underlying principle is the same. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Learn more. Saturated vs unsaturated fats - Structure in relation to room temperature state? Ask Question. Asked 8 years, 9 months ago. Active 4 years, 7 months ago. Viewed k times. Improve this question. Add a comment. Active Oldest Votes. Improve this answer. Bitwise Bitwise 1 1 silver badge 3 3 bronze badges.
Community Bot 1. Micha, R. Mozaffarian, Saturated fat and cardiometabolic risk factors, coronary heart disease, stroke, and diabetes: a fresh look at the evidence. Lipids , Astrup, A. Riserus, U. Willett, and F. Hu, Dietary fats and prevention of type 2 diabetes. Prog Lipid Res , Am J Clin Nutr, Circulation, The contents of this website are for educational purposes and are not intended to offer personal medical advice. You should seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
Never disregard professional medical advice or delay in seeking it because of something you have read on this website. The Nutrition Source does not recommend or endorse any products. Skip to content The Nutrition Source. Harvard T. The Nutrition Source Menu. Search for:. Unsaturated fats Unsaturated fats, which are liquid at room temperature, are considered beneficial fats because they can improve blood cholesterol levels, ease inflammation, stabilize heart rhythms, and play a number of other beneficial roles.
Monounsaturated fats are found in high concentrations in: Olive, peanut, and canola oils Avocados Nuts such as almonds, hazelnuts, and pecans Seeds such as pumpkin and sesame seeds 2. An excellent way to get omega-3 fats is by eating fish times a week.
Good plant sources of omega-3 fats include flax seeds, walnuts, and canola or soybean oil. Higher blood omega-3 fats are associated with lower risk of premature death among older adults, according to a study by HSPH faculty.
0コメント