Table 1.
Quantification of 2-hydroxy-4-methoxybenzaldehyde (2H4MB), 3-hydroxy-4-methoxybenzaldehyde (3H4MB), 2-hydroxy-4-methoxybenzoic acid (2H4MBA), vanillic acid (4H3MBA), and 4-hydroxybenzaldehyde (4HB).
| Compound | λanalysis (nm) | Amount (mg/g of Dried Extract) | LOD (µg/mL) | LOQ (µg/mL) | R2 |
|---|---|---|---|---|---|
| 2H4MB | 280 | 266.4489 ± 6.7318 | 0.0110 ± 0.0012 | 0.0368 ± 0.0039 | 0.9998 |
| 3H4MB | 280 | 28.4669 ± 1.1387 | 0.0110 ± 0.0010 | 0.0368 ± 0.0030 | 0.9990 |
| 2H4MBAc | 260 | 13.8240 ± 0.7161 | 0.0105 ± 0.0013 | 0.0351 ± 0.0034 | 0.9999 |
| 4H3MBAc | 260 | 2.6517 ± 0.0661 | 0.0029 ± 0.0004 | 0.0097 ± 0.0011 | 0.9991 |
| 4HB | 280 | 2.9478 ± 0.0400 | 0.0011 ± 0.0001 | 0.0036 ± 0.0001 | 0.9996 |
LOD: limit of detection; LOQ: limit of quantitation; R2: coefficient of determination of the calibration line.