Effects of EPE Vibration-damping Packaging on the Storage Quality of Blueberry
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    Abstract:

    The effect of EPE vibration-damping packaging on the quality of blueberry during logistics transportation was studied, and the basis was provided for the logistics transportation and preservation of blueberry. First, the properties of three types of vibration-damping materials: EPE, bubble cushion and polystyrene (EPS) were compared, finding that the cushioning performance of EPE damping material was better than bubble cushion and EPS. Therefore, EPE materials with different thicknesses (4, 6, 8 mm) were used to study the vibration storage of blueberries. Compared with the control group, at the end of storage, the blueberry decay rate of 8 mm EPE vibration-damping material was only 17.2%, which was 0.51 times that of the control group, which could effectively reduce the blueberry fruit decay rate. The weight loss rate of the blueberry 8 mm EPE material treatment group at the end of storage was only that of the control group 39%. It delayed the increase in weight loss rate, titratable acid and soluble solids gradually decreased with storage time. At the end of storage, the 8 mm EPE group had the highest TSS content, which was 75.4% of the initial storage period, while the control group content was 37.4% of the initial storage period. The hardness change of the blueberry group of 8 mm EPE vibration-damping material was delayed. The anthocyanin content of the control group was the most abundant when stored for 14 d, the content was 1.96 mg/g, while the EPE group reached the highest content on the 28th day, which was 1.88, 1.93, 1.96 mg/g. The total phenol content of the control group reached the peak value of 5.675 mg/g on the 7th day, and the EPE treatment group had the highest content after 21 days of storage, and the 8 mm EPE damping material content was the highest. At the end of storage, the contents of MDA in each group were 17.5, 12.3, 11.5 μmol/L and 10 μmol/L, respectively. The content of EPE group was lower than that of control group, while 8 mm EPE group had the lowest content, which was the lowest of control group 57.1%, indicating that 8 mm EPE damping material cuuld reduce the changes in anthocyanins, total phenols and malondialdehyde content with storage time, which was helpful for the subsequent storage and preservation of blueberries.

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  • Online: November 11,2020
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