Effects of plastic box modified atmosphere storage on the physiological and biochemical changes of postharvest blueberry fruits
In order to determine effects of plastic box modified atmosphere storage on the physiological and biochemical characters of blueberry fruits,the condition of 5%O2 ＋10%CO2,5%O2 ＋ 20%CO2 and 5%O2 ＋ 30%CO2 atmosphere at 1℃ were established.Meanwhile,the activity of enzymatic defense system and disease resistance-related enzymes,the concentration of non-enzyme antioxidants as well as respiration rate,lignin content,fruit firmness and rot rat were measured every 20 days.The results indicated that compared with CK,three kinds of plastic box modified atmosphere with high CO2 stimulated the defense system.Therefore,not only the activities of peroxidase（POD）,catalase（CAT）,superoxide dismutase（SOD）,phenylalanine ammoniacalyase（PAL）and polyphenol oxidas（PPO）were increased,but also VC and reduced glutathione（GSH）contents were kept in a higher level.Moreover,the plastic box modified atmosphere storage with high CO2 effectively slowed down the respiration rate,inhibited the occurrence of decay,the lignin content and fruit firmness increased,especially 5%O2 ＋30%CO2 was more conducive to delay the senescence process and effectively extending the storage period to 95 days.It was suggested that blueberry fruits had a strong endurance to high CO2 and the plastic box modified atmosphere storage with high CO2 was perfect at blueberry fruits storage.
plastic box modified atmosphere storageblueberry fruitshigh concentration of carbon dioxidephysiological and biochemical changes
国家科技期刊平台
NSTL
万方数据
维普
