| Substance |
Calibration regression equation |
Retention times (min) |
| Lactic acid |
C=2.36 × 10-7 × p |
12.7 |
| Acetic acid |
C=4.08 × 10-7 × p |
15.7 |
| Formic acid |
C=2 × 10-6 × p+0.0576 |
14.4 |
| Propionic acid |
C=2 × 10-6 × p+0.0218 |
18.5 |
| Butyric acid |
C=2 × 10-6 × p+0.0182 |
16.7 |
| Succinic acid |
C=1.97 × 10-7 × p |
12.2 |
| Acetaldehyde |
C=4.27 × 10-7 × p |
17.5 |
| Ethanol |
C=3.85 × 10-7 × p |
22.6 |
|
C: The concentration of the analyzed substances (mg/100 ml).
P: Peak area. |
| Table 1: Regression equation and retention time for HPLC standards. |
