‘Shatangju’ (Citrus reticulata) is a loose-skin mandarin cultivar with delicious taste quality. However, its fruit size varied greatly which might affect the storage results. This study investigated the physiochemical characteristics of ‘Shatangju’ fruit with different sizes after a long-term storage, and found that small fruit tended to have a longer shelf life. According to the results, the fruit with a higher transverse diameter tended to contain more seeds and had lower edible rate. The storability of ‘Shatangju’ fruit decreased with the increase of fruit size, in that the big fruit suffered more severe vesicle collapse after storage. Correspondingly, the physiochemical characteristics of the flesh varied among stored fruit of different sizes. The stored larger fruit tended to have higher content of cellulose, hemicellulose and lignin, as well as a lower content of soluble sugars, organic acids, and amino acids in the flesh, which led to the bad texture and tasteless flavor. We also found that the vesicle collapse of ‘Shatangju’ fruit was a very complicated syndrome involving a series of physiochemical changes rather than simple water loss. The results of the present study provided guidance for the classification and storage of ‘Shatangju’ fruit after harvest.

‘Shatangju’ (Citrus reticulata) 是一种具有美味品质的松皮柑橘品种。然而，其果实大小差异很大，可能会影响贮藏效果。本研究调查了不同大小的'沙糖桔'果实长期贮藏后的理化特性，发现小果实往往具有更长的保质期。结果表明，横向直径较大的果实往往含有更多的种子，食用率较低。'沙糖菊'果实的耐贮性随着果实大小的增加而降低，大果实贮藏后泡囊塌陷更为严重。相应地，不同大小的贮藏果实的果肉理化特性也不同。储存的较大的水果往往含有较高的纤维素、半纤维素和木质素，以及果肉中可溶性糖、有机酸和氨基酸的含量较低，导致质地不好，味道无味。我们还发现'沙糖菊'果实的囊泡塌陷是一种非常复杂的综合征，涉及一系列的生理化学变化，而不是简单的失水。本研究结果为'沙糖桔'采后果实的分类和贮藏提供了指导。