Table 5.
Amino acid profile of the African nightshade (S. retroflexum) protein shake powder.
| Amino acid components |
Amount (–H2O; mg g−1)* Aver. |
Amount (mg g−1)** Aver. |
|---|---|---|
| Histidine | 14.1 ± 0.3 | 17.0 ± 0.3 |
| Serine | 23.4 ± 0.6 | 26.1 ± 0.7 |
| Arginine | 10.2 ± 0.2 | 13.4 ± 0.2 |
| Glycine | 30.2 ± 1.1 | 34.9 ± 1.3 |
| Aspartic acid | 46.8 ± 1.5 | 53.3 ± 1.7 |
| Glutamic acid | 10.3 ± 0.2 | 12.2 ± 0.2 |
| Threonine | 10.7 ± 0.3 | 13.5 ± 0.3 |
| Alanine | 13.6 ± 0.3 | 16.1 ± 0.4 |
| Proline | 19.9 ± 0.7 | 22.7 ± 0.8 |
| Lysine | 8.4 ± 0.5 | 9.4 ± 0.5 |
| Tyrosine | 2.7 ± 0.3 | 3.1 ± 0.3 |
| Methionine | 14.3 ± 0.2 | 16.9 ± 0.3 |
| Valine | 13.6 ± 0.2 | 15.8 ± 0.3 |
| Isoleucine | 24.5 ± 0.5 | 28.4 ± 0.5 |
| Leucine | 16.3 ± 0.3 | 18.3 ± 0.3 |
| Phenylalanine | 265.9 ± 7.1 | 308.7 ± 8.2 |
| Total | 278.7 | 325.3 |
Source: (24).
*
Calculation based on amino acid residue mass in protein (molecular weight minus H2O).
**
Calculation based on free amino acid molecular weight.