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Presence rates and percentage of decrease in phenolic compounds in raw and heat-treated extracts.
| Phenolic substance | Amount (mg/kg) | Percentage of decrease in phenolic compounds (%) |
|---|---|---|
| Raw extract |  |
|
| Gallic acid | 41.722 | |
| Procateuic acid | 53.136 | |
| Caffeic acid | 27.162 | |
| Procateuic aldehyde | 1.305 | |
| Vanillin | 3.611 | |
| Kaempferol | 1.681 | |
| Heat-treated extract | ||
| Gallic acid | 3.046 | |
| Procateuic acid | 5.290 | |
| Caffeic acid | 4.120 | |
| Procateuic aldehyde | 0.276 | |
| Vanillin | 0.897 | |
| Kaempferol | 0.961 | |
| Epicatechin | 0.295 | |
