Nutritional Value Of Meat Flashcards
Under what headings is the nutritional value of meat evaluated?
(6)
Proteins
Fat
Carbohydrates
Vitamins
Minerals
Water
Write a note on the protein present in fish.
2
An excellent source of high biological value (HBV) protein
The main proteins present are myosin and actin in the myomeres and collagen in the connective tissue
What value of protein is present in fish?
High biological value
List the proteins present in fish.
2
Myomeres - myosin and actin
Connective tissue - collagen
Write a note on the fat present in fish.
3
Oily fish are a source of polyunsaturated fat, especially the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)
No fat is present in white fish as white fish store fat in their livers, which are removed during filleting
Shellfish contain a small amount of cholesterol
What type of fat is present in oily fish?
Polyunsaturated fat
What type of fish is high in polyunsaturated fat?
Oily fish
What polyunsaturated fats are present in oily fish?
Omega-3 fatty acids
What omega-3 fatty acids are present in oil fish?
2
Eicosapentaenoic acid (EPA)
Docosahexaenoic acid (DHA)
What does EPA stand for?
Eicosapentaenoic acid
What does DHA stand for?
Docosahexaenoic acid (DHA)
What type of fat is present in white fish?
No fat is present in white fish
Why is there no fat present in white fish?
As white fish store fat in their livers, which are removed during filleting
What type of fish contain no fat?
White fish
What type of fat is found in shellfish?
Shellfish contain a small amount of cholesterol
What type of fish contain a small amount of cholesterol>
Shellfish
Write a note on the carbohydrates present in fish.
2
Lacks carbohydrates, as glycogen (stored glucose) is converted to lactic acid during the struggle when fish are caught
For this reason fish is usually served with a carbohydrate-rich food, e.g. potatoes
Why do fish lack carbohydrates?
As glycogen (stored glucose) is converted to lactic acid during the struggle when fish are caught
What is glycogen?
Stored glucose
What is glycogen converted into during the fish’s struggle when being caught?
Lactic acid
When is glycogen converted into lactic acid in fish?
During the struggle when fish are caught
Write a note on the vitamins present in fish.
3
A source of B-group vitamins, particularly pyridoxine (B6) and cobalamin (B12)
Oily fish and white fish livers contain vitamins A and D
Some shellfish, e.g. mussels. are a source of vitamins A and C
What vitamins are present in all fish?
2
Vitamin B6/pyridoxine
Vitamin B12/cobalamin
What vitamins are present in oily fish and white fish livers?
(2)
Vitamin A
Vitamin D
What vitamins are present in shellfish such as mussels?
Vitamin A
Vitamin C
What type of fish contain vitamin A and C?
Shellfish
What type of fish contain vitamin A and D?
Oily fish and fish livers
Write a note on the minerals present in fish.
2
Contains small amounts of iodine, zinc, potassium, phosphorus and fluorine
Shellfish, especially mussels and oysters, are good sources of iron
What minerals are present in all fish?
5
Iodine
Zinc
Potassium
Phosphorus
Fluorine
What minerals are present in shellfish, especially mussels and oysters?
Iron
Give two examples of shellfish which are high in iron
Mussels
Oysters
Write a note on the water present in fish
2
Water content varies depending on the fish type
The higher the water content the less fat present
