本文研究了高阻隔复合膜包装条件下桑果在高氧(100% O2)气调贮藏过程中品质的变化，以空气包装作为对照组，通过测定在4 ℃贮藏条件下，包装盒中CO2/O2浓度的变化、桑果外在品质和营养成分的变化情况，探讨桑果贮藏期间的品质变化规律。结果表明，在4 ℃贮藏8 d条件下，高氧气调包装能够避免桑果的无氧发酵，而对桑果的硬度、维生素C（Vc）、可溶性糖含量的影响具有一致性，在贮藏的前4 d含量比对照组要低，但到了第5 d后，其含量都要比对照组高一些，而可溶性蛋白含量在2~4 d急剧下降且贮藏的过程中，除了第6 d，其含量均高于空气包装；但对色差、花青素含量的影响不明显。因此，桑果高氧气调包装能够减缓其品质下降的速度，维持其贮藏期间的良好品质，降低其腐败变质的速度，有效延长桑果的贮藏保鲜期。

Under the condition of packaging by high oxygen modified atmosphere (100%) combined with high barrier film, the quality variation of fresh mulberry fruit was investigated. Taking air packaging as control, the CO2/O2 concentration of package, the visual and nutritional quality parameters were determined to find out the variation trends of these parameters during storage at 4 ℃. The results showed that the treatment of high oxygen modified atmosphere packaging inhibited the anaerobic respiration in mulberry fruits. The firmness, soluble protein and sugar, vitamin C and sensory quality in fresh mulberry fruits packaged by high oxygen modified atmosphere were better than the control during the last days of storage although these parameters were more inferior than control at the first four days. In addition, the treatment showed little influence on chlorophyll, color, and anthocyanin of the samples. Thus, the quality of fresh mulberry fruit was effectively maintained by high oxygen modified atmosphere packaging.

“十二五”农村领域国家科技计划项目（2012BAD38B05-5）；公益性农业行业专项（201303077）