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The amino acid composition of acid-soluble collagen (ASC) and pepsin-soluble collagen (PSC) from Nile tilapia skin.
| Amino acid | PSC | ASC |
|---|---|---|
| Hydroxyproline | 70 | 86 |
| Aspartic acid | 37 | 40 |
| Threonine | 17 | 15 |
| Serine | 28 | 31 |
| Glutamic acid | 93 | 98 |
| Proline | 115 | 106 |
| Glycine | 343 | 322 |
| Alanine | 85 | 87 |
| Valine | 25 | 22 |
| Methionine | 10 | 9 |
| Isoleucine | 16 | 11 |
| Leucine | 20 | 22 |
| Tyrosine | 6 | 9 |
| Phenylalanine | 16 | 10 |
| Lysine | 22 | 32 |
| Histidine | 12 | 10 |
| Arginine | 85 | 90 |
| Total | 1000 | 1000 |
