Fig. 1. Photos of blueberry parcel delivery service. Ice-pack treatment (A), inserting blueberry fruit box (B), and fnal styrofoam packaging (C).
Fig. 2. Firmness of blueberry fruits according to the different temperature. a, b: Means ± SE (n = 3) at each days followed by the different letters are significantly different by Duncan’s multiple test (p ≤ 0.05).
Fig. 3. Changes of ambient temperature (A), untreated control (B), icepack treatment (C).
Fig. 4. Changes of ambient humidity (A), untreated control (B), icepack treatment (C).
Fig. 5. The changes of Hunter L, a, b value (A, B, C) of blueberry fruits according to time and icepack usage at ambient temperature. * Means ± SE (n = 3) were compared by t-test (p ≤ 0.05).
Fig. 6. Quality changes of firmness (A), sweetness (B) during storage according to time and icepack usage at ambient temperature. Vertical bars represent the standard errors of means (n = 3).
Fig. 7. Carbon dioxide (A) and ethylene production (B) of blueberry fruits according to the different temperature. a, b: Means ± SE (n = 3) at each days followed by the different letters are significantly different by Duncan’s multiple test (p ≤ 0.05).
Fig. 8. Photos of control (A) and SO2 pad (B) after 45 days storage at 0℃.
Fig. 9. Mechanical injury after harvest and during storage of ‘Duke’ blueberry fruits.
Table 1. Comparison of internal gas composition in delivery box during simulated parcel service.
Table 2. Comparison of quality in delivery box during simulated parcel service.
Table 3. Effect of SO2 pad on the blueberry fruit quality during storage at 0℃.
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