api/deki/files/5084/girl-160172__340.png" title="Boundless" />Contributed by BoundlessGeneral Microaltoalsimce.orglogy at Boundless

Glycerol and Fatty Acids

A fat molecule is composed of two key components: glycerol and also fatty acids. Glycerol is an alcohol with 3 carbons, five hydrogens, and three hydroxyl (OH) groups. Fat acids have a long chain that hydrocarbons v a carboxyl team attached and also may have 4-36 carbons; however, many of them have actually 12-18. In a fat molecule, the fatty acids are attached to every of the 3 carbons the the glycerol molecule through an ester bond through the oxygen atom. Throughout the ester link formation, three molecules space released. Due to the fact that fats consists of 3 fatty acids and also a glycerol, they are likewise called triacylglycerols or triglycerides.

You are watching: What kind of lipid forms when a glycerol combines with fatty acids through dehydration synthesis?

Figure: Triacylglycerols: Triacylglycerol is created by the joining of three fatty acids to a glycerol backbone in a dehydration reaction. 3 molecules the water are released in the process.

Saturated vs. Unsaturated fatty Acids

Fatty acids may be saturated or unsaturated. In a fatty acid chain, if there room only single bonds in between neighboring carbons in the hydrocarbon chain, the fatty acid is stated to be saturated. Saturated fat acids space saturated with hydrogen since solitary bonds increase the number of hydrogens on each carbon. Stearic acid and also palmitic acid, i m sorry are frequently found in meat, are instances of saturation fats.

When the hydrocarbon chain consists of a double bond, the fatty mountain is said to it is in unsaturated. Oleic mountain is an example of one unsaturated fat acid. Most unsaturated fats are liquid at room temperature and also are referred to as oils. If there is only one dual bond in the molecule, then it is known as a monounsaturated fat; e.g. Olive oil. If over there is an ext than one twin bond, then it is recognized as a polyunsaturated fat; e.g. Canola oil. Unsaturated fats assist to reduced blood cholesterol level whereas saturated fats add to plaque development in the arteries.

Unsaturated fat or oils are usually of plant origin and contain cis unsaturated fat acids. Cis and trans show the configuration of the molecule roughly the double bond. If hydrogens are existing in the very same plane, the is referred to as a cis fat; if the hydrogen atoms room on two different planes, the is described as a infectious diseases worldwide fat. The cis twin bond reasons a bend or a “kink” that stays clear of the fatty acids from pack tightly, keeping them liquid at room temperature.

See more: Sin 30 = 1/2 - Why Sin(30˚) Equals 1/2

Figure: Fatty Acids: Saturated fatty acids have hydrocarbon chains linked by solitary bonds only. Unsaturated fatty acids have one or more dual bonds. Each dual bond might be in a cis or infectious diseases worldwide configuration. In the cis configuration, both hydrogens room on the same side the the hydrocarbon chain. In the trans configuration, the hydrogens room on the opposite sides. A cis twin bond causes a kink in the chain.