Evaluation on simulative transportation and storage quality of sweet cherry by different varieties based on principal component analysis

Abstract To determine the effect of transportation vibration on the nutritional quality and antioxidant activity of sweet cherry fruits in the process of cold chain transportation. Two kinds of sweet cherry “Summit” and “Nanyang” with different storage and transportation resistance were used as experimental materials. The results showed that the content of soluble solids, titratable acids and vitamin C in sweet cherry fruits were significantly reduced, while the content of superoxide anion radical, malondialdehyde and the antioxidant enzyme activities of CAT, APX, POD and PPO increased significantly, At the same time, the content of total phenols and flavonoids were increased under transport vibration stress, but the ability of DPPH and ABTS+ free radical scavenging of sweet cherry were reduced significantly. In particular, transportation vibration stress had a greater impact on the nutritional quality and antioxidant activity of “Nanyang”, a sweet cherry with poor storage resistance. The results of this study indicated that transportation vibration has a great impact on the nutritional quality of sweet cherry, and that there is a strong correlation between antioxidant activity and nutritional quality. This study confirmed that transportation vibration during cold chain transportation can significantly reduce the nutritional quality and antioxidant activity of sweet cherry.

摘要：为明确冷链运输过程中交通振动对甜樱桃果实营养品质与抗氧化活性的影响，本研究选取耐贮性存在显著差异的两个甜樱桃品种——‘萨米脱（Summit）’与‘南阳（Nanyang）’作为实验材料。结果显示：甜樱桃果实内的可溶性固形物、可滴定酸及维生素C含量均显著降低；超氧阴离子自由基、丙二醛含量，以及CAT、APX、POD、PPO四种抗氧化酶的活性均显著升高。同时，运输振动胁迫下总酚与类黄酮含量有所上升，但甜樱桃对DPPH及ABTS⁺自由基的清除能力显著下降。尤为突出的是，运输振动胁迫对耐贮性较差的甜樱桃品种‘南阳’的营养品质与抗氧化活性影响更为显著。本研究结果表明，交通振动对甜樱桃的营养品质具有显著影响，且抗氧化活性与营养品质之间存在较强相关性。本研究证实，冷链运输过程中的交通振动可显著降低甜樱桃的营养品质与抗氧化活性。