DIETARY FIBRE - EASY NOTES
-- Dietary Fibre is the polysaccharide fraction of plant cell wall. -- It is a form of starch that is resistant to hydrolysis --Dietary fibre is important in animals for maintaining normal healthy intestinal tissues. -- In humans it is not digested due to the absence of the enzyme cellobiase. --Cellobiase is an enzyme that can split cellulose at beta 1-4 glycosidic linkage --Dietary Fibre as such does not have any nutritional value but it promotes peristalsis in intestines and prevents constipation. TYPES OF DIETARY FIBRE Advantages: --hypolipidemic effect --hypoglycemic effect' --keeps intestinal tract healthy --prevents constipation Disadvantages - -Excessive Fibre may cause irritation to intestinal mucosa causing diarrhoea,abdominal discomfort,bloating & constipation. --Excessive Fibre binds to zinc,calcium,magnesium and decreases their absorption.





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