SO_2气态熏蒸结合固态缓释保鲜剂处理对红地球葡萄贮藏品质的影响

Effect of SO_2 fumigation coupled with solid slow-release preservatives on quality of Red Globe grapes during storage

以红地球葡萄为试材,研究SO2气态熏蒸结合固态缓释保鲜剂处理对果实采后贮藏品质的影响,测定贮藏期间果实的腐烂率、漂白率、硬度、呼吸速率、SO2残留量、丙二醛(MDA)、总酚含量以及多酚氧化酶(PPO)活性。结果表明:处理Ⅰ(气态SO2结合新型保鲜纸1张)较之其他处理能够有效降低葡萄的腐烂率和SO2残留量,显著抑制葡萄果实在贮藏过程中PPO活性、呼吸速率、MDA含量以及漂白率的增加,有效地维持果实的硬度和总酚含量,延缓了葡萄在贮藏过程中的衰老进程。

Red globe grapes were used to explore the effect of SO2 fumigation coupled with solid slow-release pre- servatives treatment on postharvest quality. Decay rate, bleaching rate, firmness, respiratory intensity, SO2 residue, MDA content, total phenols content and PPO activity were measured on grape fruits. The results showed that the treat- ment I had more advantages to other treatments. The treatment I （SO2 coupled with preservative paper） effectively de- creased decay rate and S02 residue, inhibited the increase of MDA content, bleaching rate, respiratory intensity and PPO activity. In addition, treatment I could maintain significantly higher levels of firmness and total phenols content, and delay the aging process of the fruits.