Road transport vibration stress impact on ‘Palmer’ mangoes quality and shelflife

Abstract Studying the causes of postharvest fruit loss is important to avoid reduction of quality and quantity for the consumer due, for example, to the influence of frequent impacts from vibrations during transportation. In this sense, this study evaluates the storage quality of ‘Palmer’ mangoes after being subjected to different simulated road transport vibrations. Vibration was simulated from the analysis of the profile of the frequencies generated in road transport of fruit, determined in a tractor trailer. ‘Palmer’ mangoes stored after vibration stress wereevaluated for: mass loss, absorbance difference index (IAD), peel and pulp browning index (BI), pulp firmness, soluble solids content, and titratable acidity. The development of a vibration machine made it possible to satisfactorily simulate specific vibration frequencies. Vibration stress during simulated transport led to accelerated weight loss, decreased pulp firmness, and peel browning in ‘Palmer’ mangoes.

摘要 研究采后果实损耗的成因，对于规避运输过程中频繁振动冲击等因素引发的消费者端果品品质与数量损失具有重要意义。基于此，本研究针对‘Palmer’芒果在经受不同模拟公路运输振动后的贮藏品质展开评估。本研究通过分析货运拖车实测的果品公路运输振动频率特征，实现了振动模拟。本研究对经振动胁迫后贮藏的‘Palmer’芒果开展以下指标检测：质量损失量、吸光度差指数（IAD）、果皮与果肉褐变指数（BI）、果肉硬度、可溶性固形物含量及可滴定酸度。本研究研发的振动装置可较为理想地模拟特定振动频率。模拟运输过程中的振动胁迫会加速‘Palmer’芒果的质量损失，降低果肉硬度并引发果皮褐变。