Dietary Fibre

Question 1

Dietary fibre

Answer 1

Structural plants of cell walls this found in plant derived sources
Beta 1-4

Question 2

Pectin

Answer 2

Heteropolysaccharide
Found in primary and middle lamedla as well as plant cell walls
Main component is galacturonic acid
Used in foods as gelling gent

Question 3

Inulin

Answer 3

Oligosaccharides
Extracted from chicory
Stored in roots for energy supply
Prebiotic activity

Question 4

Resistant starch

Answer 4

Can not be digested
Fermented in large intestine to create short chain fatty acids

Question 5

Soluble fibre

Answer 5

Dissolve in water to form gels
Easily digested by colonic bacteria
Eg oats and citrus fruits

Question 6

Insoluble fibre

Answer 6

Does not dissolve in water
AIDS bowel regularity

Question 7

DRV Fibre

Answer 7

25-30g per day

Question 8

Benefits of fibre

Answer 8

Aid bowel regularity
Improve HDL cholesterol levels
Lower risk of developing certain cancers prebiotic
Higher satiety

Question 9

Transit Time

Answer 9

Time from ingestion to excretion of resulting faeces

Question 10

Colon cáncer

Answer 10

Dilutes and rapidly removed harmful carcinogens
Bacterial fermentation provides short chain fatty acids which lower pH and activate cancer killing enzymes

Question 11

Adverse effects of fibre

Answer 11

Phytates bind minerals reducing their bioavailability