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Average caffeine and polyphenol content in Arabica and Robusta infusions.
| Compound | Average Retention Time (min) | Quantity | |
|---|---|---|---|
| Arabica | Robusta | ||
| Caffeine (mg/mL) | |||
| caffeine | 3.5 | 1.63 | 2.55 |
| Polyphenols (μg/mL) | |||
| neochlorogenic acid | 2.56 | 79.07 | 167.21 |
| cryptochlorogenic acid | 3.87 | 224.34 | 277.41 |
| chlorogenic acid | 4.22 | 225.21 | 150.49 |
| ferulic acid | 6.58 | 35.13 | 110.18 |
| dicaffeoylquinic or feruloylquinic acids isomers | 6.82 | 5.06 | 7.28 |
| 6.99 | 12.85 | 22.72 | |
| 7.16 | 11.06 | 16.93 | |
| 8.07 | 3.66 | 11.68 | |
| 8.33 | 1.61 | 7.16 | |
| 8.60 | 7.19 | 25.98 | |
