| 罗政，耿子坚，陈飞平，王玲，张惠娜，陈于陇.不同气调包装对鲜食冬枣保鲜效果的比较[J].广东农业科学,2021,48(3):151-159 |
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不同气调包装对鲜食冬枣保鲜效果的比较 |
| Comparison of Fresh-keeping Effects of Different Modified Atmosphere Packaging on Fresh Winter Jujube |
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| DOI：10.16768/j.issn.1004-874X.2021.03.018 |
| 中文关键词: 气调包装 冬枣 呼吸作用 成熟度 透氧率 |
| 英文关键词: modified atmosphere packaging(MAP) winter jujube respiration maturity oxygen permeability |
| 基金项目:广州市科技计划项目 - 民生科技攻关计划（科技扶贫）项目（201803050014）；广东省重点研发项目（2020B0202080003）；广东省农业科学院科技创新战略专项资金（高水平农科院建设）—“十三五”新兴学科团队建设项目（201805XX） |
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| 中文摘要: |
| 【目的】探究自发气调包装保鲜对鲜食的冬枣（果皮转红面积超过 2/3）的保鲜效果。【方法】采用两种类型自发气调包装袋 MP20（20 μm）和 MP30（30 m）对冬枣进行包装处理，以微孔包装的冬枣作对照，研究在两种贮藏温度下（25 ℃和 0 ℃）不同包装条件下冬枣的生理活性及营养成分的变化规律。【结果】冬枣在常温（25 ℃）贮藏 15 d，低温（0 ℃）贮藏 90 d，与微孔包装相比，两种自发气调包装内的冬枣在室温和低温下均能降低冬枣的腐烂率 20% 以上，同时能抑制冬枣的呼吸强度，保持果实硬度大于 1 000 g/cm2，降低其营养物质的损耗。【结论】冬枣自发气调包装产品透气率、透视率不宜过高。MP30 气调包装袋的透氧率较低，小于 6 000 cm3/m2·d·atm，在贮藏 50 d 后，结合冬枣的呼吸作用调节包装内气体，形成的 5% O2 浓度、1.0%~2.0% CO2 浓度，能降低冬枣的生理代谢，保鲜期比微孔包装延长 30 d 以上，具有较好的市场应用前景。 |
| 英文摘要: |
| 【Objective】The study is carried out to explore the effect of modified atmosphere packaging (MAP) on the preservation of fresh winter jujubes (the turning-red area of pericarp is more than 2/3). 【Method】The winter jujubes were treated with two different types of MAP (MP20 and MP30), with the microporous packaging as the control. Winter jujubes were stored under different package treatments at two temperatures (25 ℃ and 0 ℃ ) to study the changes of physiological activity and nutritional components during storage.【Result】Winter jujubes could be stored at room temperature (0℃ ) for 15 days and at low temperature (15℃ ) for 90 days, compared with microporous packaging, both the decay rates of winter jujubes packaged in these two kinds of MAP bags were reduced by more than 20% at 25 ℃ and 0 ℃ . MAP could also inhibit the respiratory intensity of winter jujubes, maintain the fruit hardness ( ＞ 1 000 g/cm2) and reduce the loss of nutrients.【Conclusion】The air permeability and perspectivity of winter jujube MAP bags should not be too high. The oxygen permeability of MP30 bag is lower than 6 000 cm3/m2·d·atm, after 50 days of storage, combined with the respiration effect of winter jujubes, the gas in the package could be regulated and the concentration of 5% O2 and 1.0%-2.0% CO2 could be formed to reduce the physiological metabolism of winter jujubes. Compared with the microporous packaging, the fresh-keeping period of winter jujubes in MP30 packaging is prolonged by over 30 days, which has a better market prospect. |
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