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Physiochemical Properties of Dietary Fibre: Solubility in Water

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Physiochemical Properties of Dietary Fibre: Solubility in Water

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Questions and Answers

What is the main difference between water soluble and water insoluble dietary fibers?

Soluble fibers delay gastric emptying, while insoluble fibers increase transit time.

Insoluble fibers dissolve in hot water, while soluble fibers do not.

Insoluble fibers delay gastric emptying, while soluble fibers increase transit time.

Soluble fibers dissolve in hot water, while insoluble fibers do not. (correct)

How do viscous polysaccharides affect gastrointestinal (GI) emptying?

They accelerate GI emptying.

They decrease the rate of digestion in the small intestine.

They have no impact on GI emptying.

They delay GI emptying. (correct)

Which of the following is a water soluble fiber?

B-glucan (correct)

Lignin

Cellulose

Hemicellulose

What role do insoluble fibers play in digestion compared to soluble fibers?

Insoluble fibers decrease transit time through the intestine. Signup and view all the answers

How do water retaining pectins and gums impact glucose appearance in the plasma?

They delay glucose appearance in the plasma. Signup and view all the answers

What is the relationship between water holding capacity (WHC) and the solubility of polysaccharides?

WHC is higher in polysaccharides with high solubility. Signup and view all the answers

Which factor does NOT influence the water holding capacity (WHC) of fiber?

Color of the fiber particles Signup and view all the answers

How does coarsely ground bran differ from finely ground bran in terms of water holding capacity (WHC)?

Coarsely ground bran has higher WHC than finely ground bran. Signup and view all the answers

How does higher water holding capacity (WHC) impact the degradation of polysaccharides by microbes?

Higher WHC facilitates microbial penetration into polysaccharide structure. Signup and view all the answers

How do gums affect glucose absorption within the intestinal lumen?

Gums slow down glucose absorption by decreasing convective movement. Signup and view all the answers