| 唐瑾,陈子彤,陈羽尚,唐雯丽,刘嘉杨,周双星,陈义勇,黄友如,朱东兴.葡萄D-苯基乳酸—壳聚糖基绿色保鲜膜的配方优化及应用[J].中国南方果树,2026,55(4):148-155 |
| 葡萄D-苯基乳酸—壳聚糖基绿色保鲜膜的配方优化及应用 |
| Formula optimization and application of D-phenyllactic acid –chitosan-based green film for grape preservation |
| 投稿时间：2025-06-27 修订日期：2025-08-30 |
| DOI： |
| 中文关键词: 可食性涂膜 葡萄 绿色保鲜 响应面 电商物流 |
| 英文关键词:edible coating grapes eco-friendly preservation response surface E-commerce logistics |
| 基金项目:张家港市科技支撑计划（农业）资助项目（ZKN1914） |
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| 中文摘要: |
| 为开发新型可降解、绿色果蔬包装膜,满足葡萄电商常温物流期保鲜需求,以D-苯基乳酸(D-PLA)与壳聚糖(Cs)为主成分制备D-PLA—Cs复合保鲜涂膜。通过单因素试验,研究复合膜中各功能成分对葡萄物流期保鲜的适宜浓度范围,以保鲜综合指数为响应值,采用响应面法优化复合膜最佳配方,并用扫描电镜(SEM)观测对果皮微观结构的影响。结果表明,D-PLA—Cs复合膜各成分协同增效、共同影响葡萄保鲜效果,优化的保鲜膜最佳配方为D-PLA 0.792 %,Cs 0.484 %,氯化钙0.5 %,抗坏血酸0.85 %,在常温贮运第6天,其对腐烂率、褐变率、重量损失率与果实硬度的保鲜综合指数为0.905,与回归模型理论预测值(0.932)接近,贮运期与对照组相比,最佳配方涂膜组葡萄果皮微观结构更为致密完整,果实外观色泽与新鲜度也更好。可为电商物流期葡萄,传统二氧化硫与合成塑料包装保鲜提供一种潜在的绿色替代方法。 |
| 英文摘要: |
| To develop a new biodegradable and green packaging film for fruit and vegetable, as well as meet the preservation needs of grapes during normal temperature e-commerce logistics, D-PLA—Cs composite preservative film was prepared by using edible D-phenyllactic acid (D-PLA) and chitosan (Cs) as the main components. The appropriate concentration ranges of key functional ingredients (D-PLA, Cs) and auxiliary components (calcium chloride, CaCl2; ascorbic acid, AA) were determined through single-factor experiments. Response surface methodology (RSM) was then employed to optimize the film composition ratio, using a preservation synthesis index as the response value. Furthermore, the microstructure of grape peel was studied by scanning electron microscopy (SEM). The results showed that all components in the D-PLA—Cs composite film synergistically enhanced the preservation effect. The optimal ratio (w/w) of composite film is D-PLA 0.792%, chitosan 0.484%, CaCl2 0.5%, and AA 0.85%, on day 6 of ambient storage, the preservation synthesis index for decay rate, browning rate, weight loss rate, and fruit firmness was 0.905, which was close to the theoretical predicted value (0.932) from the regression model. Compared to the control, the skin microstructure of the optimal coating fruits was relatively dense and complete, and the sensory appearance and freshness of the fruits were also maintained better. This study provides a potential green alternative method for the preservation of table grapes using traditional sulfur dioxide and plastic packaging during ambient temperature e-commerce logistics. |
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