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Starch Gelatinization and Viscosity

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Questions and Answers

What does an increase in viscosity indicate about a liquid's characteristics?

It contains fewer particles in suspension.

It becomes more diluted and thinner.

It has increased thickness or consistency. (correct)

It experiences reduced resistance to flow.

What happens to starch granules when they are stirred after gelatinization?

They completely dissolve and lose their structure.

More swollen granules break and contribute to thickness. (correct)

The granules float on the surface without reacting.

They become smaller and less viscous.

Which statement best describes the process of gelatinization in starch?

It causes granules to swell and absorb water, increasing thickness. (correct)

It makes starch granules impermeable to water.

It reduces the volume of starch granules permanently.

It leads to evaporation of water, making it less thick.

What primarily causes the increase in viscosity when stirring gelatinized starch?

<p>The breakdown of swollen granules releasing more starch molecules.</p> Signup and view all the answers

How is the consistency of a mixture altered after gelatinization?

<p>It can increase in thickness due to granule breakdown.</p> Signup and view all the answers

Study Notes

Viscosity and Gelatinization

Viscosity refers to the resistance of a substance to flow, influenced by its thickness or consistency.
When starch is gelatinized, the starch granules swell due to heat and moisture absorption.
Stirring gelatinized starch leads to the breaking of swollen granules.
As granules break, they release more starch molecules into the mixture.
The released starch molecules contribute to an increase in viscosity, making the mixture thicker.
Understanding this process is crucial in culinary applications and food science for controlling texture and thickness in recipes.

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Description

Explore the process of starch gelatinization and its impact on viscosity. This quiz will cover how the resistance to flow increases with thickness and the role of swollen granules in this process. Understand the science behind the reaction and its practical applications.