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首页> 外文期刊>Postharvest Biology and Technology >Optimization of bulk modified atmosphere packaging for long-term storage of 'Fuyu' persimmon fruit
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Optimization of bulk modified atmosphere packaging for long-term storage of 'Fuyu' persimmon fruit

机译：“富宇”柿子果实长期储存的散装改性气氛优化

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An optimal design procedure for bulk modified atmosphere packaging (MAP) that would enable the long-term storage of 'Fuyu' persimmon fruit for export market was proposed in this study. Initially, the lower O-2 limit of aerobic respiration was determined, based on the respiratory quotient breakpoint, and found to be 0.65 kPa. Next, the parameters of a Michaelis-Menten type respiration model were estimated, and they were used to predict the O-2 consumption rate at 1.5 kPa, which was set as the target O-2 partial pressure inside the package and is considered safe to avoid fermentation. Then, the values of the predicted respiration rate, the surface area of the packaging, and the sample weight were substituted into the mathematical model to calculate the gas composition change inside the package; as a result, the necessary O-2 permeance of the packaging film material was estimated as 2.59 x 10(-7) L m(-2) s(-1) kPa(-1) for the prospective bulk packaging system. Finally, the efficacy of the designed bulk MAP on the quality changes in the fruit was practically examined by comparing the MAP performance to that of fruit in an individual package (having 60-mu m thick low-density polyethylene film bag) and to that of non-packed fruit (i.e., control). All the samples were stored under conditions simulating the long-term storage and subsequent transportation of fruit from Japan to Thailand. The results revealed that the O-2 concentration at a steady state in the designed bulk MAP could be established at 1.3-1.6 kPa, which successfully corresponded with the target value. Furthermore, losses in flesh firmness and color, and the external damage of fruits were reduced in the bulk MAP when compared to storage in the other two package treatments. Overall, the bulk MAP designed could be used for ca. 4 months storage of 'Fuyu' persimmon fruit and for its commercial application to maintain fruit quality and to export fruit to international markets.
机译：本研究提出了能够实现“福宇”柿子果实的长期储存的散装改装气氛包装（地图）的最佳设计步骤。最初，基于呼吸商突发点测定有氧呼吸的下部O-2限制，发现为0.65kPa。接下来，估计Michaelis-Menten型呼吸模型的参数，它们用于预测1.5 kPa的O-2消耗率，其被设定为包装内部的目标O-2部分压力，并且被认为是安全的避免发酵。然后，预测呼吸速率的值，包装的表面积，并将样品重量被取代成数学模型，以计算包装内的气体组成变化;结果，用于预期散装包装系统的包装薄膜材料的必要O-2渗透物估计为2.59×10（-7）L m（-2）KPA（-1）。最后，通过将地图性能与单独的包装（具有60μm厚的低密度聚乙烯薄膜袋）的地图性能与果实的地图性能进行比较，实际检查所设计的散装地图对果实质量变化的功效。非包装果（即，控制）。所有样品都储存在模拟长期储存和随后从日本到泰国的果实运输的条件下储存。结果表明，在设计的散装地图中稳定状态的O-2浓度可以在1.3-1.6kPa中建立，该KPA成功与目标值相对应。此外，与其他两个封装治疗中的储存相比，肉质地图中，肉体的损失和果实的外部损伤减少。总的来说，设计的批量地图可用于CA. 4个月储存“福州柿子水果”及其商业应用，以维持水果质量，将水果出口到国际市场。

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