CO2高传导保鲜膜处理对雪青梨贮藏品质及生理的影响

以雪青梨果实为试材，研究CO2高传导保鲜膜在低温贮藏条件下对雪青梨果实采后贮藏品质及生理特性的影响。结果表明：CO2高传导保鲜膜处理可推迟雪青梨呼吸高峰的出现，抑制PPO活性的升高，降低MDA含量，从而减缓果实的衰老；处理组可明显延缓雪青梨果实硬度、可滴定酸和VC含量的下降，抑制可溶性固形物含量的升高，从而较好地保持果实在贮藏期间的品质和风味。

Effect of Film Package with High Carbon Dioxide Permeability on Storage Quality and Physiological Properties of Xueqing,Pear

In this study, Xueqing pear was packed in film package with high carbon dioxide permeability and stored at (0 ± 0.5) ℃. The changes of respiration intensity, firmness, content of total soluble solid, titratable acid, vitamin C (VC), malondialdehyde (MDA) and polyphenol oxidase (PPO) activity during storage were investigated. Results indicated that Xueqing pear was climacteric fruit. Film package with high carbon dioxide permeability delayed the appearance of respiration peak, the increase of PPO activity and reduced MDA content, and thus alleviated the senescence of the fruits. Meanwhile, this package significantly alleviated the decrease of firmness, TA content and VC content, the increase of TSS. Film package with high carbon dioxide permeability could be a good candidate for keeping the post-harvest quality and flavour of Xueqing pear and provided longer storage life.