Table 4.
Effect of astaxanthin from different sources on the fillet amino acid profile of rainbow trout O. mykiss (g/100 g).
| Control | WBHPA-25 | WBHPA-50 | WBHPA-75 | WBHPA-100 | WBHPA-125 | WUHPA | CSA | |
|---|---|---|---|---|---|---|---|---|
| Essential amino acid | ||||||||
| Arginine | 1.31 ± 0.02 | 1.23 ± 0.01 | 1.25 ± 0.01 | 1.25 ± 0.02 | 1.21 ± 0.04 | 1.22 ± 0.04 | 1.21 ± 0.01 | 1.21 ± 0.02 |
| Threonine | 1.04 ± 0.02b | 0.98 ± 0.02ab | 0.99 ± 0.01ab | 0.97 ± 0.02ab | 0.94 ± 0.03a | 0.93 ± 0.02a | 0.94 ± 0.02a | 0.94 ± 0.02a |
| Valine | 1.14 ± 0.01 | 1.09 ± 0.02 | 1.08 ± 0.03 | 1.13 ± 0.00 | 1.11 ± 0.04 | 1.11 ± 0.03 | 1.16 ± 0.02 | 1.17 ± 0.02 |
| Methionine | 0.69 ± 0.01 | 0.66 ± 0.01 | 0.67 ± 0.00 | 0.66 ± 0.01 | 0.64 ± 0.02 | 0.64 ± 0.02 | 0.64 ± 0.02 | 0.65 ± 0.01 |
| Isoleucine | 0.97 ± 0.01 | 0.92 ± 0.02 | 0.92 ± 0.02 | 0.97 ± 0.01 | 0.95 ± 0.03 | 0.96 ± 0.03 | 0.99 ± 0.02 | 1.01 ± 0.02 |
| Leucine | 1.74 ± 0.03 | 1.66 ± 0.03 | 1.68 ± 0.01 | 1.68 ± 0.02 | 1.63 ± 0.05 | 1.61 ± 0.04 | 1.64 ± 0.02 | 1.65 ± 0.03 |
| Phenylalanine | 1.01 ± 0.02 | 0.96 ± 0.02 | 0.96 ± 0.01 | 0.96 ± 0.01 | 0.93 ± 0.03 | 0.93 ± 0.03 | 0.94 ± 0.01 | 0.93 ± 0.02 |
| Histidine | 0.92 ± 0.03 | 0.87 ± 0.02 | 0.88 ± 0.01 | 0.87 ± 0.02 | 0.87 ± 0.03 | 0.83 ± 0.03 | 0.88 ± 0.01 | 0.86 ± 0.02 |
| Lysine | 2.11 ± 0.04 | 2.02 ± 0.03 | 2.02 ± 0.02 | 2.02 ± 0.03 | 1.97 ± 0.07 | 1.97 ± 0.05 | 1.98 ± 0.02 | 1.98 ± 0.03 |
| Nonessential amino acid | ||||||||
| Aspartic acid | 2.26 ± 0.04 | 2.14 ± 0.04 | 2.17 ± 0.02 | 2.16 ± 0.02 | 2.09 ± 0.07 | 2.09 ± 0.05 | 2.13 ± 0.03 | 2.12 ± 0.04 |
| Serine | 0.87 ± 0.03b | 0.78 ± 0.01ab | 0.80 ± 0.01ab | 0.77 ± 0.04ab | 0.74 ± 0.03a | 0.73 ± 0.02a | 0.72 ± 0.01a | 0.74 ± 0.01a |
| Glutamic acid | 3.35 ± 0.04 | 3.17 ± 0.06 | 3.22 ± 0.03 | 3.19 ± 0.07 | 3.08 ± 0.09 | 3.12 ± 0.08 | 3.15 ± 0.04 | 3.16 ± 0.07 |
| Glycine | 1.00 ± 0.03b | 0.96 ± 0.02ab | 0.95 ± 0.01ab | 0.97 ± 0.01ab | 0.90 ± 0.02a | 0.98 ± 0.02ab | 0.93 ± 0.01ab | 0.95 ± 0.02ab |
| Alanine | 1.30 ± 0.01b | 1.23 ± 0.02ab | 1.23 ± 0.01ab | 1.23 ± 0.01ab | 1.18 ± 0.03a | 1.21 ± 0.03ab | 1.20 ± 0.02ab | 1.21 ± 0.02ab |
| Tyrosine | 0.79 ± 0.01 | 0.75 ± 0.02 | 0.77 ± 0.01 | 0.75 ± 0.01 | 0.74 ± 0.02 | 0.72 ± 0.02 | 0.74 ± 0.01 | 0.73 ± 0.01 |
| Proline | 0.89 ± 0.02 | 0.84 ± 0.02 | 0.88 ± 0.01 | 0.90 ± 0.02 | 0.85 ± 0.03 | 0.80 ± 0.02 | 0.81 ± 0.01 | 0.81 ± 0.03 |
| ∑Amino acids | 21.36 ± 0.30 | 20.25 ± 0.32 | 20.44 ± 0.17 | 20.45 ± 0.21 | 19.82 ± 0.60 | 19.83 ± 0.50 | 20.05 ± 0.26 | 20.08 ± 0.36 |
Values are presented as means ± SE (n = 3). Means in the same row with different superscripts are significantly different (P < 0.05).