成熟度对“金艳”猕猴桃采后及后熟品质的影响研究

Study on Postharvest and Ripening Quality of’Jinyan’Kiwifruit with Different Maturation

本研究在2015和2016年于盛花期后185~213 d分五个批次采收"金艳"猕猴桃,测定采收时各项指标后,于(1±0.5)℃下低温贮藏,定期取样测定分析,研究"金艳"猕猴桃成熟后不同采收时间对果实低温贮藏过程中硬度变化、后熟品质和冷害发生率的影响。结果显示,不同采收批次之间果实的硬度、糖酸等差异较大,但是在贮藏过程中果实硬度的下降规律相似,晚采收的果实熟化后在一定程度上会出现硬果心的问题。五个批次的果实熟化后的果肉颜色、可溶性固形物、可滴定酸含量指标基本不受采收时间的影响。盛花期后200 d采收的果实贮藏后冷害发生率显著降低,有利于提升品质,且贮藏期不受影响。

’Jinyan’kiwifruits harvested in five batches from 185 to 213 days after full bloom(DAFB)in 2015 and 2016 were determined the harvest indicators and then stored at(1±0.5)℃for periodic analysis and investigation of the effect of different harvesting time after ripening on changes of hardness texture,post-maturing quality and chilling damage during low temperature storage.The results showed that the fruits from different harvested batches had great difference in fruit hardness,sugar and acid ratio,but showed the similar decline rule in hardness,and hard cores could be found in late harvested fruit after ripening sometimes.The flesh color,soluble solids content and titratable acid content of the fruits from five batches were not affected by harvesting time.Fruit harvested at about 200 DAFB showed significant decrease in chilling injury,which was benifit to quality improvement and prolong of storage period.