Aspartame, the artificial sweetener marketed under the name...

Name: Problem 93, Chapter 21: Chemical Principle
Uploaded: 2020-08-12T01:05:10-08:00
Duration: 2 min 10 s
Channel: Madeline Currie
Description: Aspartame, the artificial sweetener marketed under the name NutraSweet, is a methyl ester of a dipeptide. The structure of aspartame is (EQUATION CAN'T COPY) a. What two amino acids are used to prepare aspartame? b. There is concern that methanol may be produced by the decomposition of aspartame. From what portion of the molecule can methanol be produced? Write an equation for this reaction.

Aspartame, the artificial sweetener marketed under the name NutraSweet, is a methyl ester of a dipeptide. The structure of aspartame is (EQUATION CAN'T COPY) a. What two amino acids are used to prepare aspartame? b. There is concern that methanol may be produced by the decomposition of aspartame. From what portion of the molecule can methanol be produced? Write an equation for this reaction.

Aspartame, the artificial sweetener marketed under the name NutraSweet, is a methyl ester of a dipeptide. The structure of aspartame is (EQUATION CAN'T COPY)
a. What two amino acids are used to prepare aspartame?
b. There is concern that methanol may be produced by the decomposition of aspartame. From what portion of the molecule can methanol be produced? Write an equation for this reaction.

Key Concepts

Chemical Decomposition and Methanol Production

Chemical decomposition refers to the breakdown of a compound into simpler compounds or elements, often under specific conditions. In the case of aspartame, the methyl group of the ester can be cleaved off under certain conditions, leading to the formation of methanol. Understanding such decomposition reactions is important in food chemistry and toxicology.

Methyl Ester

A methyl ester is a chemical compound derived from the reaction between a carboxylic acid and methanol, in which the hydroxyl group (–OH) of the acid is replaced by a methoxy group (–OCH3). This transformation alters the physical and chemical properties of the molecule, and in the context of aspartame, the methyl ester group is a key structural feature that can undergo decomposition.

Dipeptide Formation

A dipeptide is formed when two amino acids are chemically bonded together via a peptide bond. The peptide bond forms between the carboxyl group of one amino acid and the amino group of the second amino acid, resulting in a molecule with distinct biochemical properties based on its amino acid composition.

Amino Acids

Amino acids are the fundamental building blocks of proteins and peptides. They contain both an amino group and a carboxyl group and can link together in various sequences to produce a vast array of biological molecules. In peptide chemistry, selecting the appropriate amino acids is key to imparting desired properties to the resulting molecule.

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