Proteins In Meat

Question 1

Myosin

Answer 1

60% protein of thick filaments

Question 2

Actin

Answer 2

Major protein of thin filaments
15-30 of myofibrils

Question 3

Tropomyosin

Answer 3

Found in thin filaments

Question 4

Troponin

Answer 4

Component of contractile system

Question 5

Collagen

Answer 5

Found in tendons skin bones CT near muscles
Toughness
Denatured product
Increases with age
Get gelatin from it

Question 6

Elastin

Answer 6

Ligaments
Tougher than collagen
No change on heating

Question 7

Lean meat

Answer 7

Protein 20-22%
95% nitrogen content is protein then peptides and amino acids

Question 8

Water

Answer 8

Largest single component of muscle by weight
Changes to cook or
Extent of being bound to muscle

Question 9

Fat content

Answer 9

Varies based on factors
Insulation protection
Between Arnd muscles
Marbling muscle fiber bundles
Fat meat - sat fatty acids
Lean meat- unsat + phospholipids

Question 10

Cholesterol content ?

Answer 10

75mg per 100g

Question 11

Carbs ?

Answer 11

Glucose and glycogen

Question 12

Liver a good source of ?

Answer 12

Iron and Vitamin A

Question 13

Flavor?

Answer 13

Inosinic acid
Hypoxanthine
Glycopeptides
Glutamic acid