以红玫瑰葡萄原汁作试材,亚硫酸盐和苯甲酸钠作防腐剂,密封保存8个月后进行脱硫处理。

• The variety Hongmeigui grape was used as experiment material and sulfate and benzonic acid as antiseptic, the desulphur processing was done after 8 monthes in sealed preserving condition.