Table 2.
Organic acids, carbohydrates, and L-amino acids identified in leek extract (LE) by Gas Chromatography–Mass Spectrometry (GC–MS).
| Compound | Retention Time (min) | Molecular Formula | Molecular Mass (g/mol) | R-Match |
|---|---|---|---|---|
| Organic acids | ||||
| Boric acid | 4.8 | H3BO3 | 61.8 | 814 |
| Propanoic acid | 5.8 | C3H6O2 | 74.1 | 899 |
| Acetic acid | 6.1 | C2H4O2 | 60.1 | 849 |
| Phosphoric acid | 8.9 | H3PO4 | 98.0 | 869 |
| Succinic acid | 9.5 | C4H6O4 | 118.09 | 918 |
| Fumaric acid | 10.0 | C4H4O4 | 116.1 | 776 |
| Nonanoic acid | 10.2 | C9H18O2 | 158.2 | 787 |
| Malic acid | 11.8 | C4H6O5 | 134.1 | 859 |
| Arabinonic acid | 13.5 | C5H10O6 | 166.1 | 729 |
| Palmitic acid | 17.8 | C16H32O2 | 256.4 | 705 |
| Stearic acid | 19.1 | C18H36O2 | 284.5 | 702 |
| Oleic acid | 19.7 | C18H34O2 | 282.5 | 808 |
| Carbohydrates | ||||
| Arabinofuranose | 8.6 | C5H10O | 150.1 | 777 |
| Glucofuranoside | 15.4 | C6H12O6 | 180.2 | 772 |
| D-fructose | 15.5 | C6H12O6 | 180.2 | 809 |
| Mannofuranoside | 15.6 | C7H14O6 | 194.2 | 781 |
| Glucose | 17.1 | C6H12O6 | 180.2 | 790 |
| Galactopyranose | 17.1 | C6H12O6 | 180.2 | 825 |
| Amino acids | ||||
| L-valine | 6.3 | C5H11NO2 | 117.2 | 798 |
| L-proline | 12.2 | C5H9NO2 | 115.1 | 850 |