Food Packaging and Shelf Life最新文献_第4页

Plant-based antimicrobials in active food packaging: Delivery strategies and antimicrobial performance 活性食品包装中的植物性抗菌剂：递送策略和抗菌性能

IF 10.6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Packaging and Shelf Life

Pub Date : 2026-01-01 DOI: 10.1016/j.fpsl.2025.101689

Erfan Bagherzadehsurbagh , Reha Onur Azizoglu

The increasing consumer demand for natural and clean label food products is significantly reshaping preservation strategies, with antimicrobial active packaging emerging as a key solution. Unlike conventional packaging methods, antimicrobial packaging actively interacts with food to extend shelf life and improve safety, minimizing the need for direct synthetic additives. This review offers an examination of plant-based antimicrobials, focusing on recent advancements, and exploring how advanced packaging solutions optimize their efficacy. A range of plant-based antimicrobial compounds, including essential oils, plant extracts, and antimicrobial peptides are detailed and the inherent challenges associated with their direct application, such as volatility or sensory impacts are discussed. Subsequently, the manuscript presents advanced diverse incorporation techniques specifically developed to address these limitations and enable the controlled, sustained release of these antimicrobials. These methods include but are not limited to edible films, extrusion processes, surface coatings, electrospun nano/microfibers, etc. A key focus is on how combining these strategies can significantly improve the overall antimicrobial effectiveness through synergistic interactions. Also, a comparative critical assessment has been performed to determine the current challenges regarding incorporation methods and natural active compounds. Further investigations into the complex interrelations among active compounds, their mechanisms in different food environments, packaging materials, and food matrices are crucial for advancing practical applications. Additionally, aspects of industrial scaling, economic viability, and comprehensive safety assessments require thorough investigations. Progress in these areas is fundamental for allowing regulatory bodies and industries to adopt sustainable and highly effective active antimicrobial packaging solutions.

消费者对天然和清洁标签食品日益增长的需求正在显著重塑保存策略，抗菌活性包装成为一个关键的解决方案。与传统的包装方法不同，抗菌包装积极地与食品相互作用，延长保质期，提高安全性，最大限度地减少对直接合成添加剂的需求。本文综述了植物抗菌剂的研究，重点介绍了最近的进展，并探讨了先进的包装解决方案如何优化其功效。一系列基于植物的抗菌化合物，包括精油、植物提取物和抗菌肽，详细介绍了与它们直接应用相关的固有挑战，如挥发性或感官影响。随后，手稿提出了先进的不同的掺入技术，专门开发，以解决这些限制，使这些抗菌剂的控制，持续释放。这些方法包括但不限于可食用薄膜、挤出工艺、表面涂层、静电纺纳米/微纤维等。一个关键的焦点是如何结合这些策略，通过协同作用显着提高整体抗菌有效性。此外，还进行了比较批判性评估，以确定目前有关掺入方法和天然活性化合物的挑战。进一步研究活性化合物之间复杂的相互关系及其在不同食品环境、包装材料和食品基质中的作用机制对于推进实际应用至关重要。此外，工业规模、经济可行性和综合安全评估等方面都需要进行彻底的调查。这些领域的进展对于允许监管机构和行业采用可持续和高效的活性抗菌包装解决方案至关重要。

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引用次数: 0

AI-driven design of thymol-based composite films for cucumber preservation 人工智能驱动的黄瓜百里香复合保鲜膜设计

IF 10.6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Packaging and Shelf Life

Pub Date : 2026-01-01 DOI: 10.1016/j.fpsl.2025.101692

Mi Li , Yuanchang Cao , Yunge Zhang , Jian Ju , Qingmin Chen , Yanli Ma

To address uncontrollable active compound release, high trial-and-error costs, and low design efficiency in traditional active food packaging research, deep learning was introduced into active packaging design in this study, focusing on precise design of thymol-based composite films and their application in cucumber preservation. First, a dataset with 99 samples was constructed, covering 9 input variables and 1 output variable. A 4-layer fully connected neural network with linear/nonlinear activation functions was used to train a prediction model for the "minimum effective concentration" of active compounds. The model’s R² reached 0.84, explaining 84 % of the dependent variable variation. Under this study’s film-forming conditions, the model predicted thymol’s minimum effective addition amount as 0.1245 % (w/w). Based on this, composite films were prepared with actual thymol additions of 0.2 %-0.4 % (w/w). Results showed these films exhibited excellent mechanical, thermal, barrier, antioxidant, and antibacterial properties, with the 0.4 % thymol film reducing Escherichia coli and Staphylococcus aureus counts by 3 and 2.5 log values, respectively. When applied to cucumber preservation at 4 °C for 15 days, they reduced weight loss by 35 % and total color difference by 26 % compared to unpackaged controls, effectively delayed hardness decline, regulated oxidase (POD, SOD, CAT) activities, and significantly improved preservation effect. In conclusion, this study confirmed deep learning could realize predictive modeling and optimization of active packaging components, providing a standardized and efficient R&D framework for active food packaging with broad industrial application potential.

针对传统活性食品包装研究中活性化合物释放不可控、试错成本高、设计效率低等问题，本研究将深度学习引入到活性包装设计中，重点研究了百里香基复合膜的精确设计及其在黄瓜保鲜中的应用。首先，构建了包含99个样本的数据集，包含9个输入变量和1个输出变量。采用具有线性/非线性激活函数的4层全连接神经网络对活性化合物“最小有效浓度”的预测模型进行了训练。模型的R²达到0.84，解释了84 %的因变量变异。在本研究的成膜条件下，模型预测百里香酚的最小有效添加量为0.1245 % （w/w）。在此基础上，制备了百里香酚实际添加量为0.2 %-0.4 % （w/w）的复合膜。结果表明，这些薄膜具有优异的机械、热、阻隔、抗氧化和抗菌性能，其中0.4 %百里香酚薄膜可使大肠杆菌和金黄色葡萄球菌的数量分别减少3和2.5 对数值。在4℃保存15 d时，与未包装对照相比，减重35% %，总色差26% %，有效延缓了硬度下降，调节了氧化酶（POD、SOD、CAT）活性，显著提高了保存效果。综上所述，本研究证实深度学习可以实现活性包装成分的预测建模和优化，为具有广阔工业应用潜力的活性食品包装提供标准化、高效的研发框架。

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引用次数: 0

Development of a dual-functional packaging film with ethylene scavenging and antibacterial capabilities and its application in blueberry preservation 具有乙烯清除和抗菌双重功能包装膜的研制及其在蓝莓保鲜中的应用

IF 10.6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Packaging and Shelf Life

Pub Date : 2026-01-01 DOI: 10.1016/j.fpsl.2025.101690

Yuemei Zhang , Zichang Chen , Yongjin Qiao , Hongru Liu , Lixin Lu

To mitigate fruit and vegetable spoilage caused by ethylene-induced ripening and microbial growth during distribution, a dual-functional packaging film with ethylene-scavenging and antimicrobial properties was developed. Firstly, an ethylene scavenger (KMnO₄/CuO@AZ) was prepared by loading CuO and KMnO₄ onto artificial zeolite (AZ) and incorporated into low-density polyethylene (LDPE) via extrusion calendering to form the ethylene scavenging film (LE). Subsequently, an antimicrobial coating (Thy-(H₂O₂)-CS) was prepared by modifying chitosan (CS) with citric acid (CA), followed by loading H₂O₂ and thymol (Thy), and then applied onto LE to produce LE/CHT with combined functionalities.The results showed that at 4.5 mL initial ethylene, KMnO₄/CuO@AZ showed the highest removal efficiency (5089.5 μg/g), while the 6 % LE film achieved a scavenging capacity of 1.82 mL/m². The antimicrobial coating, prepared at a 1:1 ratio of H₂O₂ to CA-CS (w/w), inhibited E. coli and S. aureus by 58.0 % and 85.3 %, respectively, with thymol addition (0.5 %) further enhancing inhibition to 70.7 % and 98.1 %. Finally, blueberry preservation tests (12 days, 25 °C, and 50 % RH) demonstrated that packaging with LE, LE/CHT, and LE/CHT+MAP reduced in-package ethylene by 99.1 %, 79.5 %, and 93.7 %, respectively. LE/CHT significantly suppressed microbial growth, respiration, weight loss, softening, and nutrient degradation. When combined with MAP technology, it extended the shelf life of blueberries from 4 days to 10 days, demonstrating the potential of this dual-functional film in prolonging the freshness of highly perishable produce.

为了减轻乙烯催熟和微生物在流通过程中生长造成的果蔬变质，研制了一种具有乙烯清除和抗菌双重功能的包装薄膜。首先，在人工沸石（AZ）上负载CuO和硫酸钾制备乙烯清除剂KMnO4/CuO@AZ，并通过挤压压塑将其掺入低密度聚乙烯（LDPE）中形成乙烯清除膜（LE）。然后，用柠檬酸修饰壳聚糖（CS）制备Thy-（H₂O₂）-CS抗菌涂层，再将H2O2和百里香酚（Thy）负载于壳聚糖表面，制备具有复合功能的LE/CHT。结果表明，在初始乙烯浓度为4.5 mL时，KMnO4/CuO@AZ的去除率最高（5089.5 μg/g），而6 % LE膜的去除率为1.82 mL/m²。以H₂O₂与CA-CS （w/w）比为1:1制备的抗菌包被对大肠杆菌和金黄色葡萄球菌的抑制率分别为58.0 %和85.3 %，添加百里香酚（0.5 %）后，对大肠杆菌和金黄色葡萄球菌的抑制率分别为70.7 %和98.1 %。最后，蓝莓保存试验（12天，25°C, 50 % RH）表明，LE、LE/CHT和LE/CHT+MAP包装分别减少了99.1% %、79.5% %和93.7 %的包装内乙烯。LE/CHT显著抑制微生物生长、呼吸、体重减轻、软化和养分降解。与MAP技术相结合，将蓝莓的保质期从4天延长到10天，展示了这种双功能薄膜在延长高度易腐农产品新鲜度方面的潜力。

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引用次数: 0

Monitoring the freshness change of stored Pacific whiteleg shrimp through inkjet-printed composite indicator coupled with artificial neural network 采用喷墨打印复合指示剂与人工神经网络相结合的方法监测贮藏太平洋白对虾的新鲜度变化

IF 10.6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Packaging and Shelf Life

Pub Date : 2026-01-01 DOI: 10.1016/j.fpsl.2026.101702

Tianxi Gong , Zhenyu Han , Xiaoyu Luo

Pacific whiteleg shrimp (Litopenaeus vannamei) is a significant aquatic product extensively produced in the city of Zhuhai, Guangdong and other regions in the Greater Bay Area of China. Due to its high perishability during post-harvest storage, deteriorative reactions can result in substantial quality decrease over time, thereby causing potential economic loss and food wastage in the fishery industry. Hence developing a supplementary method in real-time monitoring shrimp freshness change is promising. In this study, we developed an inkjet-printed composite indicator, which was based on printing three pre-formulated inks onto photo papers: bromocresol purple, indigo carmine red, and reduced indigo carmine. The color-responsive indicator was applied inside the package to monitor the freshness change of whiteleg shrimps stored at 4 ºC for 9 days, where chemical and microbiological analyses were also conducted to assess shrimp quality. It was observed that the color changes of the indicator over storage were well correlated with the shrimp quality parameters including pH, total volatile basic nitrogen (TVB-N), total microbial counts and lipid oxidation products. After processing the indicator’s color response images, the artificial neural network (ANN) models were constructed, demonstrating strong predictive capability, especially with R² over 0.85 for pH and peroxide value. These positive results showed that the developed colorimetric indicator coupled with ANN can be a potential non-destructive method in evaluating real-time shrimp freshness, which may be also applicable to other fish and shellfish products with similar spoilage mechanisms.

凡纳滨对虾（Litopenaeus vannamei）是广东珠海市和中国大湾区其他地区广泛生产的重要水产品。由于其在收获后的储存过程中极易腐烂，随着时间的推移，变质反应会导致质量大幅下降，从而给渔业造成潜在的经济损失和食物浪费。因此，开发实时监测虾鲜度变化的补充方法是有希望的。在这项研究中，我们开发了一种喷墨打印的复合指示剂，它是基于在相纸上打印三种预先配制的油墨：溴甲酚紫、靛胭脂红和还原靛胭脂红。在包装内应用颜色响应指示剂，监测4℃条件下存放9天的白螯虾新鲜度变化，并进行化学和微生物学分析，评价虾的品质。结果表明，该指标在贮藏期间的颜色变化与pH、总挥发性碱性氮（TVB-N）、总微生物数和脂质氧化产物等虾品质参数具有良好的相关性。对指标的颜色响应图像进行处理后，构建人工神经网络（ANN）模型，显示出较强的预测能力，特别是pH和过氧化值的R2大于0.85。这些积极的结果表明，所开发的比色指标与人工神经网络相结合，可以作为一种潜在的无损方法来实时评估虾的新鲜度，也可能适用于具有类似腐败机制的其他鱼类和贝类产品。

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引用次数: 0

Polysaccharide-based nanocomposites in alcohol-responsive food packaging: An overview on emerging trends and future strategies 乙醇反应食品包装中基于多糖的纳米复合材料：对新兴趋势和未来策略的概述

IF 10.6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Packaging and Shelf Life

Pub Date : 2025-12-26 DOI: 10.1016/j.fpsl.2025.101684

Seyed Morteza Naghib , Mohammad Ali Khorasani , Fariborz Sharifianjazi , Ketevan Tavamaishvili

The world needs sophisticated packaging that can detect product deterioration to decrease waste and maintain safety. Ethanol and methanol are undetectable fumes that show signal deterioration in packed salads and juices. This is the first investigation to connect a possible solution is polysaccharide packaging with nanoparticles that act as alcohol detectors. Most people discuss materials, nanoparticles and sensors separately, but we integrate them. We studied over 4 years of studies to show how nanoparticles and natural material structure create a sensor. Chemistry, nanoparticle manufacturing, dispersion within the material and how alcohol causes a color change, luminescence or electrical variation, is the emphasis. We created a guide that matches metallic particles, nanoclays and other natural nanofillers with the best sensing technologies. Researchers made these smart packaging films by using methods like precision casting, extrusion or by making nanoparticles right within the material. To test how well they worked, they would put them in ethanol or methanol vapors, which are similar to the gasses that come from rotting food. They employed a wide range of methods to study and explain how the film was put up, how nanoparticles were spread out and most importantly, how well it worked to find alcohol signals and keep food fresh for longer. Optimizing nanoparticle-natural material bonding is a true transformational factor that is the key to establish a reliable and food-safe sensor. Safety rules, toxicity evaluations and measures to prevent dangerous compounds from entering food were all gathered for this. This approach makes biodegradable packaging possible, helping the environment. Future intelligence includes packaging that monitors many spoilage indications, sensors that connect to your phone and scalable, ecologically friendly manufacturing techniques. This review guides food packaging development and maintaining food freshness and quality supervision.

世界需要能够检测产品变质的精密包装，以减少浪费并保持安全。乙醇和甲醇是检测不到的烟雾，在包装好的沙拉和果汁中显示出变质的迹象。这是第一次将多糖包装与纳米颗粒作为酒精探测器的可能解决方案联系起来的研究。大多数人单独讨论材料、纳米粒子和传感器，但我们将它们整合在一起。我们研究了4年多的研究，以展示纳米颗粒和天然材料结构如何创建传感器。重点是化学、纳米颗粒的制造、材料内部的分散以及酒精如何引起颜色变化、发光或电变化。我们创建了一个指南，将金属颗粒、纳米粘土和其他天然纳米填料与最佳传感技术相匹配。研究人员通过使用精密铸造、挤压或在材料内部制造纳米颗粒等方法来制造这些智能包装薄膜。为了测试它们的效果如何，他们将它们放入乙醇或甲醇蒸气中，这两种气体类似于腐烂食物产生的气体。他们采用了各种各样的方法来研究和解释薄膜是如何形成的，纳米颗粒是如何扩散的，最重要的是，它是如何有效地发现酒精信号并使食物保鲜更长时间的。优化纳米粒子与天然材料的结合是一个真正的变革因素，是建立可靠和食品安全传感器的关键。安全规则、毒性评估和防止危险化合物进入食品的措施都是为此而制定的。这种方法使可生物降解的包装成为可能，有助于保护环境。未来的智能包括可以监控许多变质迹象的包装，连接到手机的传感器以及可扩展的生态友好型制造技术。本文综述对食品包装的发展、食品保鲜和质量监督具有指导意义。

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引用次数: 0

Bioactive PLA packaging films using artichoke leaf extract as functional additive 以洋蓟叶提取物为功能添加剂的生物活性聚乳酸包装膜

IF 10.6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Packaging and Shelf Life

Pub Date : 2025-12-24 DOI: 10.1016/j.fpsl.2025.101686

Pamela F.M. Pereira , Zeinab Qazanfarzadeh , Przemyslaw Sowinski , Amparo Jiménez-Quero

Valorizing agro-food side streams to develop active packaging materials is a promising circular approach that helps reintegrate these residues back into the food supply chain. Herein, artichoke leaves were used as a source of bioactive extracts for the formulation of active PLA-packaging materials. The incorporation of artichoke leaves extract (ALE) in PLA-based films yielded films with no prominent structural or water vapor barrier changes compared to neat PLA films. Regarding mechanical properties, ALE contributed to the formation of films with less stretchability without affecting their stiffness. On the other hand, the ALE-incorporated films presented good UV shielding, and improved antioxidant activity compared with pure PLA films. Moreover, global migration assays revealed the different behavior of PLA-ALE films according to the food simulant, where the highly polar solvent (10 % ethanol) represented the most promising medium for the developed materials, allowing to establish the safety and regulatory compliance of up to PLA-ALE2.5. Thus, the developed PLA-ALE active materials, besides showing potential for foodstuff preservation, can also be considered safe for packaging applications.

使农业食品侧流增值以开发活性包装材料是一种有前途的循环方法，有助于将这些残留物重新整合回食品供应链中。本文以洋蓟叶作为生物活性提取物的来源，用于制备活性pla包装材料。将洋蓟叶提取物（ALE）掺入PLA基薄膜中，与纯PLA薄膜相比，薄膜的结构和水汽屏障没有明显的变化。在力学性能方面，ALE有助于形成具有较低拉伸性的薄膜，而不影响其刚度。另一方面，与纯聚乳酸膜相比，加入ale的膜具有良好的紫外线屏蔽作用，抗氧化活性提高。此外，根据食品模拟物，全球迁移分析揭示了PLA-ALE薄膜的不同行为，其中高极性溶剂（10 %乙醇）代表了开发材料的最有前途的介质，允许建立高达PLA-ALE2.5的安全性和法规遵从性。因此，开发PLA-ALE活性材料，除了显示食品保存的潜力，也可以被认为是安全的包装应用。

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引用次数: 0

Multilayer flexible lidding film prepared from TPS, citral, and PBAT: Mode of failure, mechanical behavior, and barrier properties 由TPS、柠檬醛和PBAT制备的多层柔性盖膜：失效模式、力学行为和阻隔性能

IF 10.6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Packaging and Shelf Life

Pub Date : 2025-12-23 DOI: 10.1016/j.fpsl.2025.101683

Yeyen LAORENZA , Shyam S. SABLANI , Nathdanai HARNKARNSUJARIT

This study aims to develop adhesive-free multilayer flexible films composed of native and modified thermoplastic starches (TPS) and polybutylene adipate-co-terephthalate (PBAT) with (TPS-PBAT/Cit/PBAT) and without citral (TPS-PBAT/PBAT) produced via hot-roll lamination, to improved interlayer peel strength, mechanical, and barrier properties. The adhesive work (adhesive peel strength, mode of failure, and interfacial interaction), mechanical properties (tensile strength, seal peel strength, and impact strength), barrier properties, and citral release rate were investigated. Citral addition between the layers facilitated chemical interactions through carbonyl and hydroxyl groups with TPS and PBAT, leading to increased adhesive peel strength. Additionally, the high surface roughness of the TPS layer enhanced adhesive peel strength after citral addition due to mechanical interlocking. While TPS-PBAT/PBAT films exhibited adhesive failure, TPS-PBAT/Cit/PBAT films showed adherent failure, indicating stronger bonding between layers than the cohesive strength of the adherent material. In tensile tests, TPS-PBAT/PBAT films displayed early deformation followed by delamination, which was mitigated in TPS-PBAT/Cit/PBAT films after citral addition. Although the multilayer films exhibited higher mechanical properties than TPS-PBAT monolayer films, they were still lower than PBAT monolayer films due to stress concentration and crack initiation at the TPS film interface. However, the multilayer films demonstrated significantly (P < 0.05) improved barrier properties compared to TPS-PBAT monolayer films. The release rate of citral from the multilayer films was influenced by the hydrophobicity and affinity of the modified starch. In conclusion, starch modification and citral addition successfully enhanced the adhesive work, barrier properties, mechanical properties and citral release rate of the TPS and PBAT multilayer films, making them suitable for indirect contact preservation lidding trays for fresh meat, and comparable to commercial lidding film.

本研究旨在开发由天然和改性热塑性淀粉（TPS）和聚己二酸丁二烯-对苯二甲酸酯（PBAT）（TPS-PBAT/Cit/PBAT）和不含柠檬醛（TPS-PBAT/PBAT）组成的无粘合剂多层柔性薄膜，通过热轧层压生产，以提高层间剥离强度，机械性能和阻隔性能。研究了粘接性能（粘接剥离强度、失效模式和界面相互作用）、机械性能（拉伸强度、密封剥离强度和冲击强度）、阻隔性能和柠檬醛释放率。层间添加柠檬醛促进了通过羰基和羟基与TPS和PBAT的化学相互作用，从而提高了粘接剥离强度。此外，加入柠檬醛后，由于机械联锁，TPS层的高表面粗糙度增强了粘接剥离强度。TPS-PBAT/PBAT膜表现为粘接失效，TPS-PBAT/Cit/PBAT膜表现为粘接失效，表明层间的粘接强度大于粘接材料的内聚强度。拉伸试验中，TPS-PBAT/PBAT薄膜表现出早期变形后的分层现象，加入柠檬醛后，TPS-PBAT/Cit/PBAT薄膜的分层现象得到缓解。虽然多层膜的力学性能高于TPS-PBAT单层膜，但由于TPS膜界面处的应力集中和裂纹萌生，其力学性能仍低于PBAT单层膜。然而，与TPS-PBAT单层膜相比，多层膜的阻隔性能有显著改善（P <； 0.05）。改性淀粉的疏水性和亲和性影响了多层膜中柠檬醛的释放速度。综上所述，淀粉改性和柠檬醛的添加成功地提高了TPS和PBAT多层膜的粘接性能、阻隔性能、力学性能和柠檬醛释放率，使其适用于间接接触保鲜鲜肉盖盘，并可与商业盖膜相媲美。

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引用次数: 0

Composite film with tunable gas permeability and temperature-responsive release for postharvest preservation 具有可调透气性和温度响应释放的复合薄膜，用于采后保存

IF 10.6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Packaging and Shelf Life

Pub Date : 2025-12-17 DOI: 10.1016/j.fpsl.2025.101681

Haiyu Du , Xintang Liu , Chunyu Zhou , Xiangdong Yun , Zhengfeng Ma , Zhu Zhu , Yongqiang Wen

The quality deterioration of perishable produce is accelerated by the elevated temperature and imbalanced gas composition. Herein, a multifunctional composite film (Eugenol@PNPMs@HACC-g-PAA, EP@HP) integrating temperature-responsive antimicrobial and gas regulation was developed for smart and precise freshness preservation. The film achieved an exceptional CO₂/O₂ selective permeability ratio of 5.58 gas at 25°C by introducing eugenol-loaded aminated porous poly(lactic acid) microspheres into the polymer matrix. The phase transition temperature was precisely controlled at 25 ℃ by adjusting the molar ratio of quaternary ammonium groups to acrylic monomers, which realized the responsive antimicrobial release under elevated temperatures. Antimicrobial tests showed that EP@HP possessed more than 80 % antibacterial properties against key postharvest pathogens (Escherichia coli, Staphylococcus aureus, and Botrytis cinerea). Furthermore, the film exhibited antifogging properties, UV-blocking properties, mechanical strength, and biocompatibility. More importantly, storage tests demonstrated that the film extended the shelf life of bananas and kiwifruit by 3 and 9 days, respectively, through synergistic gas regulation and microbial suppression. This work presents a multifunctional smart film that combined autonomous gas regulation with on-demand antimicrobial release, offering significant potential for industrial applications according to its convenient fabrication process and effective preservation performance.

温度升高和气体成分不平衡加速了易腐农产品的品质劣化。在此，我们开发了一种集温度响应性抗菌和气体调节于一体的多功能复合膜（Eugenol@PNPMs@HACC-g-PAA, EP@HP），用于智能和精确的保鲜。通过在聚合物基体中引入载丁香酚的胺化多孔聚乳酸微球，该膜在25℃下的CO2/O2选择性渗透率比达到了5.58。通过调节季铵基与丙烯酸单体的摩尔比，在25℃下精确控制相变温度，实现了高温下抗菌药物的响应释放。抗菌试验表明，EP@HP对主要采后病原体（大肠杆菌、金黄色葡萄球菌和葡萄球菌）具有80% %以上的抗菌性能。此外，该薄膜还具有抗雾性、紫外线阻隔性、机械强度和生物相容性。更重要的是，贮藏试验表明，该薄膜通过协同调节气体和抑制微生物，使香蕉和猕猴桃的保质期分别延长了3天和9天。这项工作提出了一种多功能智能薄膜，结合了自主气体调节和按需抗菌释放，由于其方便的制造工艺和有效的保存性能，为工业应用提供了巨大的潜力。

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引用次数: 0

Super-Critical Fluid Extraction (SFE) with CO2 as decontamination step for recycling polyethylenes for food contact 以CO2为净化步骤的超临界流体萃取（SFE）用于回收食品接触用聚乙烯

IF 10.6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Packaging and Shelf Life

Pub Date : 2025-12-15 DOI: 10.1016/j.fpsl.2025.101682

Carlos Estremera , Silvia Lóbez , Fallah Belgharbi , Ana M. Mainar , Cristina Nerín , Paula Vera

The recycling of polyolefins remains a significant challenge in the context of food contact materials (FCM) due to contamination by both volatile and non-volatile compounds. Supercritical Fluid Extraction (SFE) with carbon dioxide (CO₂) has emerged as a promising technology for being included as an efficient step of decontamination or postconsumer polyolefins, ensuring their safety and quality for food contact applications. This study evaluates the capability of SFE to decontaminate postconsumer polyolefin-based materials, including multilayer polyethylene (PE) and polyamide 6,6 (PA-6,6) plastic bags, high density polyethylene (HDPE) containers, and post-consumer HDPE packaging, all previously in contact with food. A non-targeted analytical approach was applied using headspace solid-phase microextraction gas chromatography-mass spectrometry (HS-SPME-GC-MS) and ultrahigh performance liquid chromatography coupled to a quadrupole-time-of-flight mass spectrometer (UPLC-QTOF-MS) to detect and semi-quantify contaminants before and after SFE treatment and a total of 121 compounds were detected in this non-target analysis. Among them, several common plastic additives and various food-derivative compounds, degradation or oxidation products of these additives were found. The results demonstrated up to 99 % decontamination efficiency for volatile compounds and 75 % for non-volatiles, based on the total concentration of compounds before and after the SFE process. These efficiencies highlight the potential of SFE as a critical step for enhancing the quality of recycled polyolefins. The study underscores the role of SFE in advancing the recyclability of polyolefins within the framework of a circular economy. By addressing contamination challenges—both chemical and structural—and enabling the safe reuse of materials in food contact applications, this technology contributes to reducing plastic waste and promoting sustainable material management.

由于挥发性和非挥发性化合物的污染，在食品接触材料（FCM）的背景下，聚烯烃的回收仍然是一个重大挑战。超临界流体萃取（SFE）与二氧化碳（CO2）已成为一种有前途的技术，包括作为净化或消费后聚烯烃的有效步骤，确保其安全和质量的食品接触应用。本研究评估了SFE净化消费后聚烯烃基材料的能力，包括多层聚乙烯（PE）和聚酰胺6,6 （pa -6,6）塑料袋、高密度聚乙烯（HDPE）容器和消费后HDPE包装，所有这些材料之前都与食品接触。采用顶空固相微萃取气相色谱-质谱联用（HS-SPME-GC-MS）和超高效液相色谱联用四极杆飞行时间质谱联用（UPLC-QTOF-MS）对SFE处理前后的污染物进行检测和半定量，共检测到121种化合物。其中发现了几种常见的塑料添加剂和各种食品衍生化合物，以及这些添加剂的降解或氧化产物。结果表明，基于SFE过程前后化合物的总浓度，挥发性化合物的去污效率高达99% %，非挥发性化合物的去污效率为75% %。这些效率突出了SFE作为提高回收聚烯烃质量的关键步骤的潜力。该研究强调了SFE在循环经济框架内推进聚烯烃可回收性方面的作用。通过解决化学和结构污染的挑战，并使食品接触应用中的材料安全再利用，该技术有助于减少塑料废物和促进可持续的材料管理。

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引用次数: 0

Development of a highly responsive and stable pH-responsive smart film using co-pigmentation: Preparation, characterization, and application for fish freshness monitoring 一种高响应性和稳定的ph响应性智能膜的开发：制备、表征和应用于鱼类新鲜度监测

IF 10.6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Packaging and Shelf Life

Pub Date : 2025-12-13 DOI: 10.1016/j.fpsl.2025.101680

Xi Hu, Weidong Zhang, Xin Qi, Lanlan Cheng, Mingyue Shen, Huiliang Wen, Jianhua Xie

The efficacy of indicators is crucial for the accuracy of smart packaging systems. However existing natural pigments exhibit deficiencies in color rendering and long-term stability, limiting their application. Hence, this study developed a composite pigment (CA) a novel curcumin-alizarin composite pigment (CA) through a functionally complementary strategy. The CA pigment was incorporated into various film-forming substrates to create highly stable and sensitive pH-responsive intelligent packaging films. The addition of CA significantly improved the barrier properties of the films, with UV shielding efficiency increasing by approximately 56 % and a substantial reduction in T-260 values (< 15 %). Additionally, CA enhanced tensile strength, hydrophobicity, and antioxidant activity (P < 0.05). Compared with the pure alizarin films, the co-pigmentation approach provided better storage stability and visual feedback. The prepared smart film could be successfully used for the quality monitoring of fresh fish. The optimized carboxymethyl cellulose (CMC)-CA film exhibited superior comprehensive performance in fish freshness monitoring, confirming the efficacy of our indicator-matrix selecting approach. These results demonstrate the potential of CA as a long-lasting and accurate indicator for food quality monitoring, providing both technical and theoretical support for the implementation of sustainable and reliable smart packaging systems.

指标的有效性对智能包装系统的准确性至关重要。然而，现有天然色素在显色性和长期稳定性方面存在不足，限制了其应用。因此，本研究通过功能互补的策略，开发了一种新型的姜黄素-茜素复合色素（CA）。CA颜料被掺入各种成膜衬底中，以制造高度稳定和敏感的ph响应智能包装薄膜。CA的加入显著改善了薄膜的阻隔性能，紫外线屏蔽效率提高了约56% %，T-260值大幅降低（< 15 %）。此外，CA增强了抗拉强度、疏水性和抗氧化活性（P <； 0.05）。与纯茜素膜相比，共着色法具有更好的存储稳定性和视觉反馈。所制备的智能膜可成功用于鲜鱼的质量监测。优化后的羧甲基纤维素(CMC)-CA膜在鱼类新鲜度监测中表现出优异的综合性能，验证了指标-矩阵选择方法的有效性。这些结果证明了CA作为食品质量监测的持久和准确指标的潜力，为可持续和可靠的智能包装系统的实施提供了技术和理论支持。

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引用次数: 0