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香梨、鸭梨果实采后具有典型的呼吸跃变与乙烯释放高峰,并有明显的伤呼吸和伤乙烯。酥梨果实采后呼吸呈现峰状变化,但未感应出乙烯、乙醇和乙酸乙酯等挥发性物质,耐藏性最好。鸭梨果实累积乙醇和乙酸乙酯甚速,表现最不耐贮藏,高CO_2、高湿度或迅速降至0℃低温都会加速鸭梨果心变黑。香梨果实乙烯释放量最多,但累积乙醇和乙酸乙酯很少,贮藏初期可忍耐5—10％CO_2。在气调贮藏条件下,空气湿度太高或塑料帐内积水,可能阻碍果实的气体交换,导致香梨果心和果肉迅速累积乙醇和乙酸乙酯,引起果点扩大或形成花斑。
Pear, pear fruit after harvest with a typical respiratory jump and the peak of ethylene release, and there is a significant injury to breathe and injury vinyl. Postharvest respiration of pear was peaked, but no volatile materials such as ethylene, ethanol and ethyl acetate were detected, and the best storage resistance was observed. Pear pear fruit accumulation of ethanol and ethyl acetate very fast, the performance of the most intolerant storage, high CO_2, high humidity or rapidly reduced to 0 ℃ low temperature will accelerate the dark pear heart. Pear had the highest ethylene release, but accumulated less ethanol and ethyl acetate, and could tolerate 5-10% CO_2 in the early storage. Under air-conditioned storage conditions, the humidity in the air is too high or water accumulates in the plastic bag, which may hinder the gas exchange of the fruits, resulting in the rapid accumulation of ethanol and ethyl acetate in the pear heart and pulp, resulting in the expansion or formation of piebald spots.