미세천공 LDPE 필름 포장이 단감 ‘원미’ 품질에 미치는 영향

초록

To select appropriate packaging materials and packaging methods to maintain the quality of the sweet persimmon ‘Wonmi’ for export, the following four types of packaging were tested: 1) a control type (untreated), 2) modified atmosphere packaging (MAP) 5F-LDPE (conventional method, five-fruit packaging), 3) MAP 5F-MP LDPE (microperforated LDPE, OPP anti-fog film, 30 µm, OTR 80,000CC five-fruit packaging), and 4) MAP 1F-MP LDPE (microperforated LDPE, OPP anti-fog film, 30 µm, OTR 80,000CC single-fruit packaging). Fruits thus packaged were examined for 12 days at room temperature (20°C) at three-day intervals for fruit quality changes. The remaining packaged fruits were stored for two weeks in cold storage at 0°C and then moved to room temperature to examine changes in fruit quality at three-day intervals for 12 days. Regarding fruit quality changes after storage at room temperature and at a low temperature, the effect of suppressing weight loss and softening in the three MAP-treated fruits was confirmed compared to the control group. There were no significant differences between the packaging treatments in terms of the weight loss rate in either experiment. However, the MP LDPE treatment was the most effective at room temperature in terms of softening inhibition. The MAP treatment had a tremendous inhibitory effect in the experiment after low-temperature storage. In conventional MAP, off-flavoring occurred in fruits after low-temperature storage, and fruit decay occurred due to abnormal ripening, strongly suggesting that fruit quality is not maintained only by maintaining hardness. In addition, in both experiments, when packed in MAP 5F-LDPE, one unhealthy fruit caused the softening and rotting of fruits in each bundle. In addition, five-pack packaging requires considerable labor for re-sorting and re-packing after storage. Therefore, to maintain and manage fruit quality more efficiently and to ensure long-term high-quality levels, the packaging of one fruit via microperforated MAP is considered the most appropriate packaging method.

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