The process whereby starch thickens a liquid in the presence of heat is called what?

The process whereby starch thickens a liquid in the presence of heat is called what?

• A. Caramelization
• B. Denaturation
• C. Gelatinization
• D. Hydration

Answer: (C)

Gelatinization is the process by which starch thickens a liquid when heated. When starch is dispersed in liquid and heated, water penetrates the semi-crystalline starch granules, causing them to swell and absorb more water. The crystalline structure loosens and the starch molecules (amylose and amylopectin) begin to leach into the surrounding liquid, forming a network that traps water and increases the mixture’s viscosity. The result is a thickened paste, with the exact thickening depending on the type of starch and how hot you heat it. This is different from caramelization (sugar browning), denaturation (protein unfolding), or hydration (simple water uptake without thickening).

Gelatinization is the process by which starch thickens a liquid when heated. When starch is dispersed in liquid and heated, water penetrates the semi-crystalline starch granules, causing them to swell and absorb more water. The crystalline structure loosens and the starch molecules (amylose and amylopectin) begin to leach into the surrounding liquid, forming a network that traps water and increases the mixture’s viscosity. The result is a thickened paste, with the exact thickening depending on the type of starch and how hot you heat it. This is different from caramelization (sugar browning), denaturation (protein unfolding), or hydration (simple water uptake without thickening).