Question

Describe the role of fiber in determining the solubility and digestibility of amylose and amylopectin in the small intestine and how this relates to glycemic index and glycemic load.

Answer 1

:- Dietary fibre is mainly needed to keep the digestive system healthy. It also contributes to other processes, such as stabilising glucose and cholesterol levels.

:-Dietary fibres may cause dietary starch to escape digestion in the small intestine and enter the large intestine.

:-The presence of fibre in a form that restricts starch gelatinization or access of the hydrolytic enzymes to starch can slow the rate of digestion of the starch(In most starches, amylopectin comprises 70–80% of total starch, and amylose comprises the remaining 20–30%).

:- fibres, because of their ability to swell within the aqueous medium, can trap water and nutrients, especially water-soluble ones such as sugars.

:- Viscous fibres can influence accessibility of available carbohydrates to the mucosal surface and slow their absorption.

:- When your body breaks down soluble fibre, it lowers the glycemic index (GI) of other foods as they are digested.

This index was created to rank the rate at which foods increase or decrease blood glucose in your system.

Fibre does not affect your blood sugar levels.