| Amino acid contents (g/100g dry weight) | |||
| Organic soil culture | Hydroponic culture | ||
| Natural sun light | Artificial sun light | 1% collagen water solution | Liquid fertilizer |
Arginine | 1.40 | 0.89 | 1.61 | 1.35 |
Lysine | 1.54 | 1.04 | 1.71 | 1.53 |
Histidine | 0.54 | 0.39 | 0.61 | 0.55 |
Phenylalanine | 1.28 | 0.90 | 1.29 | 1.24 |
Tyrosine | 0.91 | 0.61 | 0.91 | 0.83 |
Leucine | 1.98 | 1.38 | 2.02 | 1.93 |
Isoleucine | 1.01 | 0.69 | 1.06 | 1.00 |
Methionine | 0.49 | 0.31 | 0.52 | 0.47 |
Valine | 1.39 | 0.95 | 1.57 | 1.37 |
Alanine | 1.64 | 1.10 | 2.01 | 1.71 |
Glycine | 1.32 | 0.93 | 1.50 | 1.39 |
Proline | 1.17 | 0.81 | 1.18 | 1.12 |
Glutamic acid | 2.62 | 1.66 | 6.99 | 2.93 |
Serine | 1.10 | 0.73 | 1.39 | 1.05 |
Threonine | 1.16 | 0.79 | 1.27 | 1.12 |
Aspartic acid | 2.27 | 1.55 | 7.30 | 2.80 |
Tryptophan | 0.58 | 0.36 | 0.51 | 0.48 |
Cystine | 0.32 | 0.20 | 0.40 | 0.32 |
Total amino acid | 22.72 | 15.29 | 33.85 | 23.19 |