Question

Which of the following functional groups is NOT present in Aspartame?

• A. Ester
• B. Amide
• C. Carboxylic acid
• D. Aldehyde

Hint:

To identify functional groups, look for key structural features: esters contain –COO–, amides have –CONH–, carboxylic acids have –COOH, and aldehydes contain –CHO.

Answer 1

The Correct Option is D

Step 1: Aspartame's Composition
Aspartame, a synthetic sweetener, is made from two amino acids:

• Aspartic acid
• Phenylalanine methyl ester

Step 2: Recognize Key Functional Groups
Aspartame's structure includes these functional groups:

• Ester group – from the phenylalanine methyl ester
• Amide group – from the peptide bond (–CONH–)
• Carboxylic acid group – found in aspartic acid

Step 3: Confirm Absence of a Specific Group
Aspartame lacks an aldehyde group (–CHO). Aldehydes are present in substances like formaldehyde or glucose, but not in Aspartame. \[ \boxed{\text{Aldehyde is NOT present in Aspartame.}} \]