Abstract To investigate cell-wall carbohydrate metabolism and fruit softening of postharvest Annona squamosa, several indicators including firmness, moisture distribution, cell-wall polysaccharides compositions, activities of enzymes related with fruit softening during storage were studied. Results indicated that firmness exhibited a significant decline from 1 d to 3 d. Free and semi-bound moisture in pericarp was removed gradually and moisture migrated from high to low freedom degree during storage. Molecular weight distribution and monosaccharide composition of cell-wall polysaccharides changed greatly during storage, especially the degradation of pectin polysaccharide. Besides, related enzymes including PG, PME and Cx were all involved in fruit softening of postharvest Annona squamosa. This would provide theoretical basis to help solve fruit quality decline of Annona squamosa during storage in further research.

中文翻译：

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番荔枝贮藏过程中随着果实软化细胞壁多糖的降解及相关酶活性的变化

摘要 为研究番荔枝采后细胞壁糖类代谢及果实软化情况，对果实硬度、水分分布、细胞壁多糖组成、贮藏过程中与果实软化相关的酶活性等指标进行了研究。结果表明，硬度从 1 d 到 3 d 显着下降。果皮中游离和半结合水分在贮藏过程中逐渐去除，水分由高自由度向低自由度迁移。细胞壁多糖的分子量分布和单糖组成在贮藏过程中变化很大，尤其是果胶多糖的降解。此外，PG、PME和Cx等相关酶均参与了番荔枝采后果实的软化。