B2- Riboflavin

Question 1

Sources

Answer 1

-liver
-kidney
-cheese
-egg yolk

Question 2

Functions

Answer 2

-forms part of the enzyme system concerned with the oxidation of glucose and release of energy
-essential for upkeep of tissues, eg skin and eyes
-maintain uptake of other B vitamins- created B3 from the conversion of the amino acid tryptophan

Question 3

Deficiency

Answer 3

-cracks appear at side of mouth
-tongue becomes red and swollen
-in severe cases, blood vessels invade the cornea of the eye

Question 4

Excess

Answer 4

body excretes as it’s water soluble

Question 5

Factors affecting absorption

Answer 5

-light sensitive
-heat and air have little effect- light is it’s main damaging factor
-slightly soluble
-fairly stable to heat

Question 6

Effects of cooking

Answer 6

-slightly soluble to water
-fairly heat stable
-overall loss is lower than thiamin