Table 2.
Free and total amino acid composition of black- and yellow-seeded B. napus seed meal.
| Amino Acid | Free Amino Acid | Total Amino Acid | ||
|---|---|---|---|---|
| B. napus | B. napus | B. napus | B. napus | |
| Yellow (mg/g) | Black (mg/g) | Yellow (mg/g) | Black (mg/g) | |
| Asparagine | 6.42 ± 0.11 | 6.67 ± 0.33 | 12.91 ± 0.28 a | 11.71 ± 0.08 b |
| Threonine | 0.44 ± 0.01 | 0.45 ± 0.01 | 9.37 ± 0.25 a | 8.29 ± 0.14 b |
| Serine | 5.86 ± 0.03 a | 2.65 ± 0.22 b | 8.27 ± 0.34 | 7.50 ± 0.22 |
| Glutamic | 15.5 ± 0.11 | 15.5 ± 0.55 | 23.75 ± 0.25 a | 21.18 ± 0.41 b |
| Methionine + Cysteine | 1.36 ± 0.18 a | 0.21 ± 0.01 b | 32.15 ± 0.47 a | 29.01 ± 0.33 b |
| Isoleucine | 0.33 ± 0.04 a | 0.20 ± 0.0 b | 13.39 ± 0.36 a | 11.97 ± 0.21 b |
| Leucine | 0.34 ± 0.04 | 0.28 ± 0.04 | 2.52 ± 0.04 | 2.23 ± 0.16 |
| Tyrosine | 1.22 ± 0.09 | 1.15 ± 0.04 | 15.44 ± 0.32 a | 13.80 ± 0.27 b |
| Glycine | 0.62 ± 0.02 a | 0.39 ± 0.02 b | 2.28 ± 0.10 a | 1.83 ± 0.04 b |
| Alanine | 2.95 ± 0.03 a | 1.06 ± 0.0 b | 6.99 ± 0.22 a | 6.04 ± 0.09 b |
| Valine | 0.70 ± 0.12 | 0.51 ± 0.03 | 4.25 ± 0.20 | 3.69 ± 0.02 |
| phenylalanine | 2.08 ± 0.01 a | 1.26 ± 0.05 b | 8.17 ± 0.23 a | 7.06 ± 0.00 b |
| Histidine | 0.98 ± 0.09 a | 0.50 ± 0.04 b | 6.73 ± 0.21 a | 5.88 ± 0.05 b |
| Lysine | 1.65 ± 0.01 a | 0.80 ± 0.01 b | 9.52 ± 0.19 | 9.02 ± 0.03 |
| Arginine | 1.59 ± 0.05 a | 1.17 ± 0.02 b | 12.13 ± 0.42 a | 10.44 ± 0.06 b |
Data represent the mean ± standard error (n = 3). a and b indicate a significant difference at p < 0.05 level.