Amino acids | Spring | Summer | Autumn | Winter | ||
---|---|---|---|---|---|---|
April | June | August | October | December | February | |
Essential (EAA) | ||||||
Threonine | 2.54 ± 0.03a | 2.83 ± 0.19a | 2.79 ± 0.05a | 2.66 ± 0.08a | 2.64 ± 0.05a | 2.84 ± 0.10a |
Valine | 2.15 ± 0.02a | 2.38 ± 0.08b | 2.30 ± 0.05ab | 2.21 ± 0.11ab | 2.13 ± 0.02a | 2.36 ± 0.05b |
Methionine | 0.90 ± 0.02a | 0.97 ± 0.19a | 1.10 ± 0.06a | 1.13 ± 0.15a | 0.89 ± 0.07a | 1.04 ± 0.05a |
Isoleucine | 1.94 ± 0.02a | 2.20 ± 0.09b | 2.17 ± 0.05bc | 2.08 ± 0.09abc | 1.99 ± 0.03ac | 2.20 ± 0.07b |
Leucine | 3.49 ± 0.03a | 4.16 ± 0.22b | 4.08 ± 0.17bc | 3.87 ± 0.24abc | 3.64 ± 0.04ac | 4.05 ± 0.18bc |
Phenylalanine | 1.85 ± 0.02a | 2.06 ± 0.08bc | 2.05 ± 0.05abc | 1.90 ± 0.11abc | 1.86 ± 0.01ab | 2.10 ± 0.07c |
Histidine | 0.96 ± 0.01abc | 1.02 ± 0.03bc | 1.00 ± 0.04abc | 0.93 ± 0.04ab | 0.92 ± 0.02a | 1.04 ± 0.03c |
Lysine | 3.64 ± 0.19ab | 4.21 ± 0.08a | 3.83 ± 0.36ab | 3.59 ± 0.10b | 3.46 ± 0.06b | 3.98 ± 0.26ab |
Arginine | 3.71 ± 0.03ab | 4.25 ± 0.05ab | 4.54 ± 0.13a | 4.01 ± 0.32ab | 3.20 ± 0.04b | 4.09 ± 0.56ab |
∑EAA | 21.19 ± 0.24ab | 24.08 ± 0.68c | 23.86 ± 1.04c | 22.39 ± 1.28abc | 20.73 ± 0.21a | 23.70 ± 1.38bc |
Non-essential (NEAA) | ||||||
Aspartic acid | 4.78 ± 0.06a | 5.58 ± 0.29ab | 5.78 ± 0.16b | 5.34 ± 0.32ab | 4.96 ± 0.03ab | 5.56 ± 0.27ab |
Tyrosine | 1.70 ± 0.01a | 1.94 ± 0.08b | 1.94 ± 0.06b | 1.82 ± 0.11ab | 1.73 ± 0.01a | 1.96 ± 0.05b |
Serine | 2.41 ± 0.01ab | 2.59 ± 0.05a | 2.50 ± 0.09ab | 2.35 ± 0.15ab | 2.31 ± 0.01b | 2.50 ± 0.08ab |
Glutamic acid | 7.12 ± 0.09a | 8.58 ± 0.43bc | 8.67 ± 0.30c | 8.17 ± 0.48abc | 7.46 ± 0.09ab | 8.21 ± 0.54abc |
Glycine | 5.17 ± 0.10ab | 5.87 ± 0.30bc | 6.11 ± 0.22c | 5.83 ± 0.38bc | 4.86 ± 0.03bd | 4.23 ± 0.19d |
Alanine | 3.71 ± 0.06ab | 4.01 ± 0.17b | 3.57 ± 0.11a | 3.42 ± 0.13ac | 3.05 ± 0.04c | 3.34 ± 0.23ac |
Proline | 1.82 ± 0.04ab | 2.02 ± 0.07ab | 1.98 ± 0.07ab | 1.77 ± 0.14a | 1.83 ± 0.05ab | 2.04 ± 0.14b |
∑NEAA | 26.72 ± 0.31a | 30.59 ± 1.26b | 30.56 ± 1.00b | 28.73 ± 1.83ab | 26.21 ± 0.12a | 27.84 ± 1.63ab |
∑AA | 47.91 ± 0.18a | 54.67 ± 1.83b | 54.42 ± 2.04b | 51.11 ± 3.08ab | 46.94 ± 0.31a | 51.53 ± 2.99ab |