Table 1
Amino acid compositions of bluefin tuna skin type I collagen

Amino acid

%

Hydroxyproline

6.41

Aspartic acid

3.95

Threonine

2.49

Serine

3.41

Glutamic acid

6.81

Proline

10.45

Glycine

27.58

Alanine

9.68

Valine

2.11

Methionine

1.29

Isoleucine

1.15

Leucine

2.14

Tyrosine

0.35

Hydroxylysine

1.16

Lysine

2.63

Histidine

0.79

Arginine

9.90