Table 1.
The wavelengths of λex and λem of standards phenolic compounds.
| Phenolic compound | λex (nm) | λem (nm) |
|---|---|---|
| Caffeic acid | 310–360 | 410 |
| Chlorogenic acid | 300–360 | 416 |
| p-Coumaric acid | 320–340 | 380 |
| Ferulic acid | 310–360 | 400 |
| Sinapic acid | 300–360 | 415 |
| Ellagic acid | 280–380 | 400 |
| Homogentisic acid | 280–320 | 335 |
| Gallic acid | 265–315 | 345 |
| Protocatechuic acid | 265–315 | 335 |
| Syringic acid | 250–315 | 335 |
| Vanillic acid | 260–315 | 330 |
| Methyl syringate | 250–320 | 340 |
| Gentisic acid | 290–360 | 400 and 475 |
| Kaempferol | 280–320 | 430 and 500 |
| Catechin | 250–310 | 315 |