Research Article
Effects of Salinity on Muscle Nutrition, Fatty Acid Composition, and Substance Anabolic Metabolism of Blue Tilapia Oreochromis aureus
Table 3
Nutritional evaluation of essential amino acids in muscle of Oreochromis aurea after 60 days of culture under different salinities (mg/g).
| Groups | Item | Thr | Val# | Met + Cys | Ile | Leu | Phe + Tyr | Lys | EAAI |
| 0 | CS | 1.23 ± 0.01 | 0.89 ± 0.02 | 0.55 ± 0.01 | 0.94 ± 0.02 | 1.01 ± 0.00 | 0.86 ± 0.01 | 1.59 ± 0.02 | 89.78 ± 4.34 | AAS | 0.96 ± 0.01 | 0.84 ± 0.02 | 0.71 ± 0.01 | 0.91 ± 0.02 | 0.94 ± 0.00 | 1.05 ± 0.02 | 1.47 ± 0.02 |
| 3 | CS | 1.22 ± 0.01 | 0.91 ± 0.01 | 0.54 ± 0.01 | 0.97 ± 0.01 | 1.01 ± 0.00 | 0.87 ± 0.01 | 1.57 ± 0.01 | 90.58 ± 2.13 | AAS | 0.95 ± 0.01 | 0.85 ± 0.01 | 0.7 ± 0.01 | 0.94 ± 0.01 | 0.93 ± 0.00 | 1.05 ± 0.01 | 1.45 ± 0.00 |
| 5 | CS | 1.21 ± 0.01 | 0.89 ± 0.02 | 0.55 ± 0.01 | 0.96 ± 0.03 | 1 ± 0.00 | 0.88 ± 0.01 | 1.58 ± 0.00 | 93.01 ± 0.86 | AAS | 0.94 ± 0.01 | 0.83 ± 0.02 | 0.71 ± 0.02 | 0.93 ± 0.03 | 0.93 ± 0.00 | 1.06 ± 0.01 | 1.46 ± 0.00 |
| 7 | CS | 1.2 ± 0.01 | 0.91 ± 0.02 | 0.56 ± 0.02 | 1 ± 0.01 | 1 ± 0.01 | 0.85 ± 0.00 | 1.56 ± 0.01 | 92.24 ± 1.23 | AAS | 0.93 ± 0.01 | 0.85 ± 0.02 | 0.71 ± 0.03 | 0.96 ± 0.01 | 0.93 ± 0.01 | 1.04 ± 0.00 | 1.44 ± 0.01 |
| 9 | CS | 1.24 ± 0.01 | 0.9 ± 0.01 | 0.54 ± 0.01 | 0.97 ± 0.01 | 1.01 ± 0.00 | 0.85 ± 0.00 | 1.58 ± 0.00 | 90.84 ± 4.09 | AAS | 0.96 ± 0.01 | 0.84 ± 0.01 | 0.7 ± 0.01 | 0.93 ± 0.01 | 0.94 ± 0.00 | 1.04 ± 0.00 | 1.45 ± 0.00 |
| 11 | CS | 1.24 ± 0.01 | 0.89 ± 0.01 | 0.54 ± 0.01 | 0.95 ± 0.01 | 1.01 ± 0.00 | 0.86 ± 0.00 | 1.6 ± 0.02 | 89.56 ± 0.17 | AAS | 0.96 ± 0.01 | 0.83 ± 0.01 | 0.69 ± 0.01 | 0.91 ± 0.01 | 0.94 ± 0.00 | 1.04 ± 0.01 | 1.48 ± 0.02 |
| Egg protein | 404 | 603 | 587 | 501 | 848 | 960 | 653 | — | FAO/WHO | 250 | 310 | 220 | 250 | 440 | 380 | 340 |
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Note. 0 : 0 ppt salinity; 3 : 3 ppt salinity; 5 : 5 ppt salinity; 7 : 7 ppt salinity; 9 : 9 ppt salinity; 11 : 11 ppt salinity; CS: the chemical content of muscle protein; AAS: the amino acid content of muscle protein; EAAI: the essential amino acid index of muscle protein; Thr: threonine; Val: valine; Met: methionine; Cys: cysteine; Ile: isoleucine; Leu: leucine; Phe: phenylalanine; Tyr: tyrosine; Lys: lysine; : the first restricted amino acid; #: the second restricted amino acid. |