Table 1 Contents of Amino Acids in Colla corii asini
EtOH extract | Water extract | |
|---|---|---|
Amino acid | mg/g | |
Glycine (Gly) | 8.639 | 0.208 |
Alanine (Ala) | 2.527 | 0.062 |
Phenylalanine (Phe) | 0.586 | 0.005 |
Leucine (Leu) | 0.68 | 0.014 |
Histidine (His) | 0.108 | 0.002 |
Arginine (Arg) | 0.301 | 0.043 |
Lysine (Lys) | 0.19 | 0.006 |
Aspartic acid (Asp) | 1.511 | 0.052 |
Glutamic acid (Glu) | 1.317 | 0.034 |
β-amino isobutyric acid | 1.049 | 0.234 |
γ-amino-n-butyric acid | 0.216 | ND* |
Serine (Ser) | 0.591 | 0.020 |
Threonine (Thr) | 0.326 | 0.008 |
Proline (Pro) | 1.621 | 0.030 |
Tyrosine (Tyr) | 0.503 | ND* |
Valine (Val) | ND* | 0.039 |
β-alanine | 0.618 | 0.0847 |
Ethanolamine | ND* | 0.0356 |
Carnosine | 0.193 | 0.1446 |
Hydroxyproline | 0.685 | 0.0165 |
Total free amino acid | 21.662 | 1.040 |