Abstract:Using fresh-cut qinguan apple as test materials，combined with citric acid preservative treatment，study under 4 ℃ storage conditions，the effects of ordinary packaging，vacuum packaging，high-oxygen packaging and nitrogen-filled packaging on the quality change rule of fresh-cut Qinguan apple storage quality were studied to determine the best packaging method.The results shoued that：on the premise of synthesizing all the indexes of fresh cut apple storage period，vacuum packaging had the best fresh-keeping effect on fresh-cut apples，so that the appearance quality of fresh-cut apples could be maintained，and the browning process and TSS content reduction rate of fresh-cut apples could be delayed.At the same time，the activities of polyphenol oxidase （polyphenol oxidase，PPO）and peroxidase （peroxidase，POD）during the storage of fresh-cut apples were inhibited，and the increase of malondialdehyde（malondiadehyde，MDA）content was slowed down.