Polyunsaturated

Question: What is a test that can distinguish the difference between saturated and polyunsaturated oil? You have two samples of oil and one contains saturated animal oil, while the other contains polyunsaturated oil. How could you test these to find which is which? You can use these chemicals: Calcium carbonate powder, bromine water, acidified sodium dichromate solution, acidified potassium permanganate, magnesium metal. danke!

Answer: If you use the magnesium metal you can test by immersing the Mg in the saturated oil for a long period of time (overnight) and also immerse another strip of Mg in the polyunsaturated oil. Since saturated oil just means it has only single carbon-carbon bonds and the other sites are filled with hydrogen, then the saturated oil has the capacity to react to the magnesium by the hydrogens attacking the magnesium. The polyunsaturated oil has double carbon-carbon bonds so has much less hydrogens available for bonding. So by looking at the magnesium and weighing the samples before immersion and after, the magnesium that lost the most mass will be the saturated oil ----------------- You can also do a test using no chemicals, and that test is just using heat. Saturated oils heat up much faster than polyunsaturated oils. So if you put a sample of each in a separate test tube, using identical mass amounts, and time each samples temperature rise (put a thermometer in the test tube) under a bunsen burner, the sample that rises quicker in temperature per unit of time is the saturated oil

Question: How would i draw a saturated fat, unsaturated fat, and polyunsaturated fat chemicly? I need this for biology were doing chemistry a bit.

Answer: SATURATED FAT = draw a normal triglyceride with NO DOUBLE BONDS (mono)UNSATURATED FAT = draw a normal triglyceride with 1 double bond. POLYUNSATURATED = draw a triglyceride with many double bonds.

Question: How are polyunsaturated fatty acids and partially hydrogenated fats related ?Examples? Healthiest ? Couldn't partially hydrogenated refer to polyunsaturated fats since the carbon chain isn't fully hydrogenated in either case ?

Answer: A lipid (fat) is called a triglyceride. The name comes from the fact that it is 3 fatty acids bonded to a glycerol molecule. The type of fat that you end up with depends on the fatty acids. Think of the acid as a chain, with bonding points on the sides. If all of the bonding points contain a hydrogen, the fatty acid is called "saturated". If one point is open, then its called "monounsaturated". If there are more than one open bonding points, then its called a "polyunsaturated" fatty acid. A few decades ago, scientists were trying to find a healthier alternative to butter. So they took a polyunsaturated fat and added hydrogens to them artificially. What they ended up making was a trans-fatty acid. These were recently found to be much, MUCH, worse for you than the saturated fats in butter. So the health factor for fats is as follows: Most healthy - polyunsaturated fat (which includes the Omega-3 and Omega 6 fatty acids.) Next most - Monounsaturated fat Next - Saturated fats Absolute Worst Fats For You - Trans fats Sources for these: Poly's- Many nut oils, cold-pressed oils such as extra virgin olive, linseed, and flax seed. Have a great flavor raw, but low smoke point. Mono's- Many frying oils, such as Peanut, Canola, Vegetable, Sunflower, Safflower, etc. Have a very neutral flavor and a high smoke point. Saturated- Butter, meat. Not nearly as bad for you as once thought. Almost always solid at room temperature, with a few exceptions. Trans fats- Partially hydrogenated oils, or fully hydrogenated oils. If the ingredients list either of these, its best to avoid when possible.

Question: what is the difference between saturated, unsaturated, and polyunsaturated fats? what is the difference between saturated, unsaturated, and polyunsaturated fats? Give me an example of a saturated, unsaturated, and polyunsaturated fat?

Answer: Saturated fats dont have any double bonds (think alkanes) unsaturated fats do have double bonds Polyunsaturated fats have many double bonds (more than one)

Question: Why are polyunsaturated fats better for you? I've learnt in chemistry this year that if a fat is unsaturated, then it contains some double bonds. Why is this beneficial? Is it so that the fat can bond with some undesireable element such as Chlorine or Astatine? Or is is simply that hydrogen is bad for the body?

Answer: http://en.wikipedia.org/wiki/Unsaturated_fat

Question: What will you see if you test a polyunsaturated margarine with iodine? It's a question for my chemistry project on Plant oils. I tried searching for it on Google it but I couldn't find it. Please help! thanks guys, that has helped loads! I'm in year 9 but we're doing GCSE Chemistry and I've got to do the exam next month. Thnaks again

Answer: The coloured halogens such as iodine and bromine are decoloured when mixed with an unsaturated compound. The halogen can very easily break the double bond between two carbon atoms, and form an addition compound. This removes the coloured halogen from the solution, which becomes courless. A simple schematic reaction would be: C=C + I2 → lC - Cl Note that the iodine has been added into the unsaturated molecule, removing it from solution. So, if you mix a polyunsaturated margarine with a dilute solution of iodine, the solution will lose its colour.

Question: what are two effets of polyunsaturated fats and what foods contain polyunsaturated fats? what are the benefits of sunflower oil?

Answer: Polyunsaturated fat can be found mostly in grain products, fish and sea food (herring, salmon, mackerel, halibut), soybeans, and fish oil. Foods like mayonnaise and soft margarine may also be good sources, but nutritional facts can vary by style and brand. There are a variety of health benefits associated with the consumption of sunflower oil. Sunflower oil is high in the essential vitamin E and low in saturated fat. The two most common types of sunflower oil are linoleic and high oleic Linoleic sunflower oil is a common cooking oil that has high levels of the essential fatty acids called polyunsaturated fat. It is also known for having a clean taste and low levels of trans fat. High oleic sunflower oils are classified as having monounsaturated levels of 80% and above. Newer versions of sunflower oil have been developed as a hybrid containing linoleic acid. They have monounsaturated levels lower than other oleic sunflower oils. The hybrid oil also has lower saturated fat levels than linoleic sunflower oil. Sunflower oil of any kind has been shown to have cardiovascular benefits as well. Diets combined with a low fat content and high levels of oleic acid have been suggested to lower cholesterol which, in turn, results in a smaller risk of heart disease. Sunflower oils fit this criteria. Studies of adults suggested that a balanced diet in which small quantities of saturated fats are replaced with sunflower oil has detectable cholesterol-reducing benefits. Research suggests that lower cholesterol levels can be caused by balances of polyunsaturated and monounsaturated fatty acids. Sunflower oil may help with this balance. Sunflower oil may also have suggested skin-health benefits. Sunflower oil, like other oils, can retain moisture in the skin. Check out the link below for 999 Foods Highest in Polyunsaturated Fat.

Question: How to state the meaning of polyunsaturated when applied to food products?

Answer: The meaning of polyunsaturated does not change due to the context which it is used in. At least with respect to chemistry. Food chemistry, or organic chemistry, the meaning remains the same. Therefore a sufficient definition would be that it describes a molecule which is some type of unsaturated polymer, or it is a polymer chain with at least one double bond that could be replaced such that the molecule would incorporate an additional hydrogen.

Question: What is the difference between a saturated fat, an unsaturated fat, and a polyunsaturated fat?

Answer: So, a "fat" is a long chain of carbon atoms. A saturated fat contains entirely single C-C bonds. An unsaturated fat has a single C=C double bond in the structure. A polyunsaturated fat has many C=C double bonds in the struature.

Question: If fish oil and polyunsaturated fats are so good for you, then why are they still called fats? The term fat has negative connatations so why is something thats good for you called fats?

Answer: Cause they are the healthy fats that our bodies need ie: fish oil

Question: Do you know where I can buy low fat polyunsaturated margarine? its used in a lot of weight watchers recipes but i can't find it anywhere! Could you tell me where to find it or give me a brand name?

Answer: All supermarkets sell it, have a look at the labels in the dairy counters.

Question: What is the difference between Trans Fat, Saturated fat, Polyunsaturated Fat, and Monounsatured fat? And are any of these the same thing but with different wording?

Answer: - Polyunsaturated fats and monounsaturated fats are the good fats that our body needs in order to live. They're are in good foods like avocados, nuts, peanut butter, etc. - Saturated fats are mostly bad. Too much can increase the risk of heart disease and things like that. Try not to go over 20 grams a day. They are not completely bad if kept in moderation. They are mostly in whole milk, meat, eggs, etc. (you need a little saturated fats a day) - Trans fats are what you should definetely try to avoid. This can clog arteries and increase risks of heart disease. They are worse than saturated fats. A little is okay, but this is the worst kind of fat. This is mostly in shortening, margerine, and things with partially hydrogenated oil.

Question: Does soy oil contain polyunsaturated fatty acids? If not then what kind of fatty acids does it contain?

Answer: yes i think it does omega 3 - unstaurated fatty acid alpha linolenic - polyunstaurated

Question: what is teh difference between a saturated, monounsaturated, and polyunsaturated triglyceride? ?

Answer: Monounsaturated fatty acid A fatty acid that is missing one pair of hydrogen atoms in the middle of the molecule. The gap is called an "unsaturation." Monounsaturated fatty acids are found mostly in plant and sea foods. Olive oil and canola oil are high in monounsaturated fatty acids. Monounsaturated fatty acids tend to lower levels of LDL-cholesterol in the blood. Polyunsaturated fatty acid A fatty acid that is missing more than one pair of hydrogen atoms. Polyunsaturated fatty acids are mostly found in plant and sea foods. Safflower oil and corn oil are high in polyunsaturated fatty acids. Polyunsaturated fatty acids tend to lower levels of both HDL-cholesterol and LDL-cholesterol in the blood. Saturated fatty acid A fatty acid that has the maximum possible number of hydrogen atoms attached to every carbon atom. It is said to be "saturated" with hydrogen atoms. Saturated fatty acids are mostly found in animal products such as meat and whole milk. Butter and lard are high in saturated fatty acids. Saturated fatty acids tend to raise levels of LDL-cholesterol ("bad" cholesterol) in the blood. Elevated levels of LDL-cholesterol are associated with heart disease. Triglyceride is another form in which fat is transported through the blood to the body tissues. Most of the body's stored fat is in the form of triglycerides. Another lipoprotein--very low-density lipoprotein, or VLDL--has the job of carrying triglycerides in the blood. NHLBI considers a triglyceride level below 200 mg/dl to be normal. It is not clear whether high levels of triglycerides alone increase an individual's risk of heart disease. However, they may be an important clue that someone is at risk of heart disease for other reasons. Many people who have elevated triglycerides also have high LDL-cholesterol or low HDL-cholesterol. People with diabetes or kidney disease--two conditions that increase the risk of heart disease--are also prone to high triglycerides.

Question: What is the difference between saturated, unsaturated and polyunsaturated fat?

Answer: If the chain of fat has no carbon-carbon double bonds, the fatty acid is saturated as all the carbon atoms are linked to the maximum possible number of hydrogen atoms (they are saturated with hydrogen atoms). Mono-unsaturated is a chain which contains a single double bond. Polyunsaturated is a chain with more than one double bond.

Question: How do i calculate the percent of saturated, polyunsaturated, monounsaturated fat?

Answer: Check the nutrition info on the label or an online food calculator.