Research Article
Effects of Chinese Propolis in Protecting Bovine Mammary Epithelial Cells against Mastitis Pathogens-Induced Cell Damage
Table 2
Major phenolic acids and flavonoids presented in Chinese propolis.
| Peak number | Compounds | Retention time (min) | Contents (mg/g of extract) |
| 1 | Caffeic acid | 11.1 | 4.1 0.3 | 2 | p-Coumaric acid | 16.5 | 1.8 0.7 | 3 | Ferulic acid | 19.0 | 1.2 0.3 | 4 | Isoferulic acid | 21.1 | 1.44 0.0 | 5 | 3,4-Dimethoxycinnamic acid | 28.5 | 3.6 0.2 | 6 | Cinnamic acid | 31.0 | 1.4 0.0 | 7 | Pinobanksin | 36.2 | 9.0 0.5 | 8 | Naringenin | 38.2 | 0.4 0.0 | 9 | Quercetin | 40.1 | 1.0 0.2 | 10 | Kaempferol | 47.8 | 3.4 0.2 | 11 | Apigenin | 51.2 | 2.5 1.6 | 12 | Pinocembrin | 55.6 | 20.4 4.2 | 13 | Chrysin | 64.2 | 28.1 0.6 | 14 | CAPE | 65.2 | 6.7 1.0 | 15 | Galangin | 66.4 | 12.4 3.0 |
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Values are the means SD ().
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