| Roasting temperature(℃) | Roasting time(min) | Polyphenols (mgGAE1)/g) | DPPHradical scavengingability(%) |
| Unroasted | 0 | 0.90±0.132)gA3) | 4.66±0.89gA |
| 200 | 10 | 1.58±0.04fC | 6.05±0.68fC |
| 20 | 2.03±0.27dB | 9.78±0.63eB | |
| 30 | 2.37±0.02cA | 11.73±0.58cdA | |
| 250 | 10 | 1.69±0.03efC | 6.98±0.19fC |
| 20 | 2.57±0.08bcB | 10.68±1.21deB | |
| 30 | 3.28±0.14aA | 13.22±0.53bA | |
| 300 | 10 | 1.91±0.35deC | 12.62±1.59bcC |
| 20 | 2.83±0.02bB | 13.44±0.58abB | |
| 30 | 3.43±0.14aA | 16.64±0.65aA |