Question

Acrylamide, a toxic and potentially carcinogenic compound, can be formed in high heated starchy food products such as potato chips by which of the following precursor molecules?

• A. Asparagine
• B. Acrylic acid
• C. Sucrose
• D. Raffinose

Hint:

Mitigating acrylamide formation in processed foods involves selecting potato cultivars with low free asparagine and reducing sugar levels, or treating raw products with the enzyme asparaginase.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Thermal processing of carbohydrate-rich foods at temperatures above $120~^\circ\text{C}$ can trigger the Maillard reaction. This reaction produces both desirable aromatic compounds and undesirable toxic byproducts like acrylamide.

Step 2: Detailed Explanation:
- Acrylamide ($\text{C}_3\text{H}_5\text{NO}$) is formed when starchy foods are fried, baked, or roasted at high temperatures.
- The primary pathway for acrylamide formation involves the free amino acid asparagine reacting with reducing sugars (such as glucose or fructose).
- At high temperatures, the amine group of asparagine undergoes a Maillard reaction with the carbonyl group of reducing sugars. This leads to decarboxylation and deamination, forming acrylamide.
- This reaction is a significant concern in products like potato chips, french fries, and toasted cereals.

Step 3: Final Answer:
The precursor molecule responsible for acrylamide formation is Asparagine.