刘博强,郝义,胡文清,卢亚男,李立.水杨酸/LDPE薄膜的制备及其对香蕉品质的影响[J].包装工程,2023,44(5):75-82.
LIU Bo-qiang,HAO Yi,HU Wen-qing,LU Ya-nan,LI Li.Preparation of Salicylic Acid/LDPE Film and Its Effect on Banana Quality[J].Packaging Engineering,2023,44(5):75-82. |
| 水杨酸/LDPE薄膜的制备及其对香蕉品质的影响 |
| Preparation of Salicylic Acid/LDPE Film and Its Effect on Banana Quality |
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| DOI：10.19554/j.cnki.1001-3563.2023.05.010 |
| 中文关键词: 水杨酸 低密度聚乙烯 薄膜 香蕉 保鲜 |
| 英文关键词: salicylic acid LDPE film banana preservation |
| 基金项目:上海市地方能力建设专项项目(19050502000) |
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| 中文摘要: |
| 目的 研究添加不同浓度水杨酸(Salicylic Acid, SA)的低密度聚乙烯(Low-Density Polyethylene, LDPE)薄膜的基本性能的变化，及对香蕉保鲜效果的影响。方法 通过将不同质量分数的SA、抗氧化剂245和LDPE共混挤出，采用流延工艺制备SA–LDPE薄膜。以空白LDPE薄膜为对照，在(16±1)℃保鲜条件下对香蕉进行保鲜实验，通过测定和分析香蕉的质量损失率、硬度、色差、糖度、气体成分等指标，研究SA–LDPE薄膜对香蕉品质的影响。结果 添加了SA的LDPE薄膜力学性能降低，气体阻隔性能上升，延缓了香蕉硬度的下降和色差值的上升。结论 添加SA改善了薄膜的阻隔性能，SA–LDPE薄膜可有效抑制香蕉呼吸作用，延缓香蕉软化过程，抑制香蕉褐变，有助于保持香蕉的生理特征和感官品质。 |
| 英文摘要: |
| The work aims to study the changes in the basic properties of low-density polyethylene (LDPE) films with different concentrations of salicylic acid (SA) and its effects on the preservation of bananas. The blend of the different proportions of SA antioxidant 245 and LDPE were used to prepare SA-LDPE films by blending extrusion and flow casting process. With blank LDPE films as the control, the preservation of bananas was tested at (16±1) ℃, and the effects of SA-LDPE films on the quality of bananas were investigated by measuring and analyzing the weight loss rate, hardness, color difference, brix, gas composition and other indexes of bananas. The mechanical property of LDPE films with the addition of SA decreased, the gas barrier properties increased, the hardness decreased and the color difference value increased. The addition of SA improves the barrier properties of the films. The SA-LDPE films could effectively inhibit the respiration of bananas, delay the softening process of bananas, inhibit the browning of bananas, and help maintain the physiological characteristics and sensory quality of bananas. |
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