One of the main triglycerides in palm oil is tripalmitin. It contains three fatty acids with carbon designations of, [16:0]. Draw the structure of tripalmitin. Would you expect this molecule to be a solid or liquid at room temperature?

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Welcome back, everyone. A common triglyceride found in Cocoa butter is Tristan composed of three fatty acids with a shorthand notation 14 to 0. Through the structure of trimeris would trimeric be more likely to be a solid or a liquid at room temperature. So basically, we're looking at the structure of a triglyceride. Essentially, what we have to do is draw the structure of glycerol as usually. So we essentially draw a three member chain and three carbon oxygen bonds. And then for every carbon, we add an appropriate number of hydrogens, two followed by one, followed by two based on the valency of carbon instead of the hydrogen atoms. We want to replace those hydrogens with carbonyl. And that Carboni part comes from the acid. So that the we first carbon dad belongs to the acid. And in this case, our acid has 14 carbons and zero double bonds. If there are no double bonds, we're looking at a straight chain. So we're going to have C two units. And essentially, we want to understand how many of those seeds to units we will have. Of course, at the end of the chain, we are going to have a methyl. So we want to count the number of carbon atoms that we have. 123, 14 minus three, gives us 11 repeating sh two units. We have shown one of them to clearly show the carbon carbon bond. Of course, we can add pre season and state siege to 12. But sometimes this is more appropriate because only one siege to unit is bonded to carbonel carbon, right? So essentially what we want to do is basically repeat the same side chain for the remaining carbons C two, followed by 11 ch two units. And then the male group. Now we want to state if this structure would be a solid or a liquid at a room temperature. And essentially, we are going to state that it is more likely to be a solid due to the fact that it doesn't have kinks in its structure. Notice that it contains saturated side chains, those side chains do not have double bonds. We have to recall that double bonds can have cis or trans configuration. In this case, if the structure only contains straight chains, those straight chains allow close backing. And therefore, due to the possibility of a close backing, this structure is expected to be a solid and not a liquid. So we have our answers. Thank you for watching.

One of the main triglycerides in palm oil is tripalmitin. It contains three fatty acids with carbon designations of, [16:0]. Draw the structure of tripalmitin. Would you expect this molecule to be a solid or liquid at room temperature?

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Key Concepts

Triglycerides

Fatty Acid Structure

Physical State of Lipids