Research Article
Cinnamic Acid Is Partially Involved in Propolis Immunomodulatory Action on Human Monocytes
Table 1
Relative percentages of compounds, determined by GC-MS, from ethanolic extract of Brazilian propolis.
| Component | Retention time (min) | % of total |
| Benzoic acid | 9.3 | 0.193 | Dihydrocinnamic acid | 14 | 2.180 | Dihydrocinnamic acid | 22 | 0.860 | Coumaric acid | 26.5 | 0.382 | Cafeic acid | 28.6 | 0.297 | Prenyl-p-coumaric acid | 32.5 | 6.560 | Flavonoids | 35.8 | 1.142 | Artepillin C | 37.7 | 16.750 | Trihydroxymethoxy flavonon | 40.5 | 0.666 | Tetrahydroxy flavonon | 40.8 | 0.228 | Triterpene | 47.6 | 0.777 | Triterpene | 51 | 0.309 |
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