Table 4.
Amino acid profile of five common worts, adapted from [19].
| Amino Acids in Wort-Results Expressed as mg Amino Acid/100 mL Wort, 1040 S.G. Gravity | |||||
|---|---|---|---|---|---|
| Amino Acid | Pure Malt | Brewery Wort | Malt + 25% Barley Flour |
Malt + 25% Wheat Flour |
Proteolytic Malt |
| Alanine | 15.1 | 9.9 | 15.5 | 16.5 | 39.4 |
| Valine | 13.7 | 9.2 | 14 | 14.7 | 26 |
| Glycine | 7.9 | 5.2 | 9.1 | 10.3 | 19 |
| Iso-leucine | 7.5 | 5.3 | 9.4 | 10.7 | 18.6 |
| Leucine | 18.8 | 10.9 | 18.3 | 19.2 | 39.7 |
| Proline | 44.5 | 38.9 | 47.9 | 47.3 | 73 |
| Threonine | 17.2 | 2.5 | 11.2 | 23.9 | 1.7 |
| Serine | 7.4 | 4.8 | 7.5 | 9.3 | 28.8 |
| Cysteine | neg. | neg. | neg. | neg. | neg. |
| Methionine | neg. | 2.3 | 4.7 | 4.9 | 12.8 |
| Hydroxyproline | neg. | neg. | neg. | neg. | neg. |
| Phenylalanine | 16.2 | 11.4 | 15.8 | 17.3 | 34.4 |
| Aspartic acid | 18.9 | 17.9 | 23.3 | 24.8 | 29 |
| Glutamic acid | 24.8 | 8 | 31 | 40.9 | 39.6 |
| Tyrosine | 8.9 | 0.8 | 8.3 | 8.1 | 11.5 |
| Ornithine | 0.9 | neg. | neg. | neg. | 13.3 |
| Lysine | 10.1 | 5.6 | 11.3 | 8.9 | 19.2 |
| Tryptophan | trace | neg. | neg. | neg. | neg. |
| Histidine | trace | 0.3 | neg. | neg. | 0.4 |
| Arginine | 15.5 | 10.8 | 17.6 | 13.8 | 18.3 |
| Cystine | trace | na | neg. | neg. | neg. |
Note: na indicates compounds that were not examined, neg indicates compounds that were lost during analysis, trace indicates compounds that gave inconsistent and variable results.