Nutritional Value Of Eggs Flashcards
Under what headings is the nutritional value of eggs evaluated?
Proteins
Fat
Carbohydrates
Vitamins
Minerals
Water
Write a note on the protein present in eggs.
3
An excellent source of high biological value (HBV) protein
Ovalbumin and globulin in the white
Vitellin and livetin in the yolk
What classification of protein is present in eggs?
High biological value
What proteins are present in the egg white?
Ovalbumin
Globulin
What proteins are present in the egg yolk?
Vitellin
Livetin
Where is ovalbumin and globulin present in the egg?
The egg white
Where is vitellin and livetin present in the egg?
The egg yolk
Write a note on the fat present in the egg.
3
Saturated fat is present in the yolk - it is dispersed as a fine emulsion due to the presence of lecithin
The yolk contains cholesterol
The white is fat-free
What type of fat is present in the egg yolk?
Saturated fat
How is the saturated fat present in the egg yolk?
It is dispersed as a fine emulsion due to the presence of lecithin
What causes the fat in the yolk to be dispersed as a fine emulsion?
The presence of lecithin
Other than saturated fat, what is presence in the egg yolk?
Cholesterol
What fat is present in the egg white?
The egg white is fat-free
Write a note on the carbohydrates present in eggs.
Eggs lack carbohydrates, for this reason eggs are usually served with a carbohydrate-rich food, e.g. bread
Give an example of a carbohydrate-rich food, that eggs can be served with?
Bread
Write a note on the vitamins present in eggs.
4
A source of B-group vitamins, particularly thiamine (B1), riboflavin (B2), niacin (B3) and cobalamin (B12)
Yolks are a good source of vitamin A,D,E and K
Vitamin A (beta-carotene) gives the yolk its colour
Eggs lack vitamin C
List the B-group vitamins present in eggs.
4
Thiamine (B1)
Riboflavin (B2)
Niacin (B3)
Cobalamin (B12)
List the fat-soluble vitamins present in eggs.
4
Vitamin A
Vitamin D
Vitamin E
Vitamin L
Where are the fat soluble vitamins present in eggs?
In the yolk
What function does vitamin A have in the egg yolk?
Vitamin A (beta-carotene) gives the yolk its colour
What form of vitamin A is present in egg yolks?
Beta-carotene
What vitamin do eggs lack?
Vitamin C
Write a note on the minerals present in eggs.
2
A good source of calcium, phosphorus, zinc and sulfur
Non-haem iron is present in the yolk
What mineral is present in the yolk?
Non-haem iron
List all of the minerals present in eggs.
Calcium
Phosphorus
Zinc
Sulfur
Non-haem iron
What form of iron is present in eggs?
Non-haem iron
Write a note on the water present in eggs.
High water content, with the majority found in the white
Where is the majority of the water found in an egg?
The majority is found in the egg white
