Antioxidant Vc and Na_2S_2O_3 could reduce the degree of browning. Among the three concentration,Vc (0.15 g/L) was the best one. Vc (0.1 g/L, 0.2 g/L) were better than others.

• 抗氧化剂Vc和Na_2S_2O_3能减轻褐变程度；其中0.；15 g/L的Vc效果最佳；其次为0