10 Questions
What is the main difference between water soluble and water insoluble dietary fibers?
Soluble fibers dissolve in hot water, while insoluble fibers do not.
How do viscous polysaccharides affect gastrointestinal (GI) emptying?
They delay GI emptying.
Which of the following is a water soluble fiber?
B-glucan
What role do insoluble fibers play in digestion compared to soluble fibers?
Insoluble fibers decrease transit time through the intestine.
How do water retaining pectins and gums impact glucose appearance in the plasma?
They delay glucose appearance in the plasma.
What is the relationship between water holding capacity (WHC) and the solubility of polysaccharides?
WHC is higher in polysaccharides with high solubility.
Which factor does NOT influence the water holding capacity (WHC) of fiber?
Color of the fiber particles
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.
How does higher water holding capacity (WHC) impact the degradation of polysaccharides by microbes?
Higher WHC facilitates microbial penetration into polysaccharide structure.
How do gums affect glucose absorption within the intestinal lumen?
Gums slow down glucose absorption by decreasing convective movement.
Learn about the classification of dietary fibre based on solubility in water. Soluble fibres like hemicellulose, pectin, gums, and mucilage dissolve in hot water, while insoluble fibres like cellulose, lignin, and some hemicellulose do not dissolve.
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