亚精胺处理对采后番木瓜果实质地及成熟衰老的影响  

Effects of Spermidine on the Texture and Ripening of Postharvest Papaya Fruit

作　　者：刘新婷 阎宁 李雯[1] 曾教科 LIU Xinting;YAN Ning;LI Wen;ZENG Jiaoke(College of Horticulture,Hainan University,Haikou,Hainan 570228,China)

机构地区：[1]海南大学园艺学院,海南海口570228

出　　处：《热带作物学报》2020年第2期378-385,共8页Chinese Journal of Tropical Crops

基　　金：国家自然科学基金青年科学基金项目(No.31601799);海南省研究生创新科研课题(No.Hys2018-36);国家重点研发计划项目(No.2016YFD0400904-5)。

摘　　要：为探讨亚精胺处理对采后番木瓜果实质地变化及成熟衰老的影响,以‘日升’番木瓜为试材,采用质构仪质地多面分析(texture profile analysis,TPA)法,对亚精胺处理后番木瓜果实贮藏期间呼吸速率和色泽的变化、果实各项质地参数进行测定。结果表明:适当浓度的亚精胺处理可有效延缓番木瓜果实的软化。其中5 mmol/L的亚精胺处理效果最佳,其次是1 mmol/L亚精胺处理。果实的硬度、咀嚼性、胶着性、黏聚性、回复性较之蒸馏水处理组均有所提高,并显著降低果实的呼吸速率,延缓果实色泽的转变。而10 mmol/L的亚精胺处理加速了果实的软化及成熟衰老。相关性分析表明,果实硬度、咀嚼性、胶着性、黏聚性、回复性之间均呈现极显著的正相关性,弹性与其他质构参数间呈现较差的相关性(P<0.519)。综上所述,TPA测试可用于评价采后番木瓜果实质地的变化。In order to investigate the effect of spermidine on the texture and ripening of postharvest papaya fruit,the papaya fruit(cv.Risheng)was used as the test material.The changes of respiration rate and color of the spermidine treated papaya fruit during storage were determined,and various texture parameters of papaya fruit were determined by the texture profile analysis(TPA).Papaya fruit softening was delayed by appropriate concentration of spermidine,and the treatment of 5 mmol/L spermidine had the best effect,followed by 1 mmol/L spermidine,which resulted in higher hardness,chewiness,adhesiveness,significantly reduced the rate of fruit respiration,and delayed the fruit transformation.On the contrary,the treatment of 10 mmol/L spermidine accelerated the softening of papaya fruit.Correlation analysis indicated that there was significant positive correlation between fruit firmness,chewiness,adhesiveness,cohesiveness and recovery,but there was no obvious correlation between elasticity and other texture parameters(P<0.519).The results indicated that the TPA test could be used to evaluate the changes of postharvest papaya fruit texture.

关 键 词：番木瓜 质构 成熟衰老 亚精胺 质地多面分析(TPA) 

分 类 号：S667.9[农业科学—果树学]