Table 5. List of primary phenolic acids analyzed by CE- and LC-TOFMS.
| Phenolic acids | Lot No. | ||||||
|---|---|---|---|---|---|---|---|
| 060123 | 070122 | 080121 | 090119 | 100118 | 110124 | 120116 | |
| 2-Hydroxy-4-methylvaleric acid | 1.1E-05 | 9.9E-05 | 7.4E-05 | 9.1E-05 | 1.0E-05 | 6.7E-05 | 5.7E-05 |
| m-Hydroxybenzoic acid | 6.2E-05 | 3.7E-05 | 5.4 E-05 | 5.5E-05 | 6.2E-05 | 8.8E-05 | 2.7E-05 |
| 2,5-Dihydroxybenzoic acid | 5.7E-04 | 3.0E-04 | 4.8E-04 | 5.1E-04 | 6.6E-04 | 8.8E-04 | 2.6E-04 |
| Shikimic acid | 4.9E-06 | 5.2E-06 | 7.7E-06 | 6.3E-06 | 1.2E-05 | 8.6E-06 | 7.1E-06 |
| Hippuric acid | 1.4E-05 | 1.3E-05 | 1.3E-05 | 1.9E-05 | 1.5E-05 | 1.5E-05 | 1.1E-05 |
| Homovanillic acid | 4.7E-05 | 3.0E-05 | 3.9E-05 | 3.0E-05 | 4.2E-05 | 4.8E-05 | N.D. |
| Quinic acid | 1.0E-04 | 6.2E-05 | 6.4E-05 | 5.2E-05 | 7.5E-05 | 1.1E-04 | 1.6E-04 |
| m-Aminophenol | 6.1 E-05 | 3.7E-05 | 3.5E-05 | 3.2E-05 | 2.5E-05 | 2.5E-05 | N.D. |
The first two numbers included in the Lot No. indicate the production year (e.g., 060123 is January 23, 2006).
Numbers in the table indicate relative peak area of phenolic acids.
E: exponential, ND: not detected