Effect of apple polyphenol extracts (APE) or APE followed by xanthine-xanthine oxidase (X-XO) on endocellular concentrations of the main apple phenolic compounds
| APE (10−4 M) | APE (10−4 M), X (1 mM)-XO (50 mU/ml) | |
|---|---|---|
| Cells were incubated with APE (10−4 M) for three hours and then with serum free medium or X (1 mM)-XO (50 mU/ml) for two hours. | ||
| Mean (SD) from three separate experiments run in duplicate. | ||
| nd, not detectable. | ||
| Catechin (ng/106 cells) | 3.196 (0.098) | 0.376 (0.004) |
| Epicatechin (ng/106 cells) | 0.764 (0.002) | nd |
| Chlorogenic acid (ng/106 cells) | 5.62 (0.867) | 1.97 (0.078) |