vitamin B12 Flashcards
1
Q
what are the properties of vitamin B12
A
- water soluble
- destroyed by strong acids, alkalis and light
- heat stable, but some loss during cooking
2
Q
what are the food sources of vitamin B12
A
-offal
-meat
-eggs
-fish
3
Q
what are the biological functions of vitamin B12
A
-aids the metabolism of fatty acids to release energy
-aids the metabolism of folate/folic acid
-aids formation of red blood cells
4
Q
what are the effects of deficiency of vitamin B12
A
-tiredness and irritability due to a lack of energy
-increased risk of neural tube defects in the foetus
- anaemia , due to low levels of red blood cells that are needed to transport oxygen
5
Q
what is the recommended dietary allowance of vitamin B12
A
children- 0.7-1
teenagers/adults- 1.4
pregnancy- 1.6
lactation- 1.9
