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pp.14-22
The effects of the initial storage temperature and the PA film packaging on the extension of the shelf-life and the improvement of the postharvest storage quality of muskmelons were studied during their storage. Their storage quality was tested as follows: PA-film-wrapped muskmelons, stored at 2℃ or 7℃ for 30 days after their harvest, were kept at 10℃ for 27 days (total: 57 days). On the fifth day of storage at 10℃ (35th day overall), the weight loss reached 6.4% in the 7-control. However, the 2-PA showed the smallest loss of 2.2%. The soluble solids content and the acidity that were measured before the storage were 10.8 °brix and 0.26% in all the groups. After 27 days of storage at 10℃ (on the 57th day overall), the values were highest in the 2-PA group with 9.7 °brix and 0.15%, respectively. Microorganisms were not detected at first; but on the fifth day of storage at 10℃ (35th day overall), their values were 3.87 and 2.68 log CFU/g in the seven-control and the 2-PA, respectively. In other words, the 2-PA was found to be more effective in inhibiting microbial proliferation. In relation to sensory properties such as appearance, flavor, sweetness and chewiness, the 2-PA was superior to the other groups and was found to be most effective in improving the storability of muskmelons. In conclusion, it was found that low-temperature injury and fast storage quality deterioration did not occur in film-wrapped muskmelons that were stored at 2℃ for 30 days after they were harvested.
