Food Packaging and Shelf Life最新文献_第9页

Sodium alginate/cellulose nanocrystals based hydrogel pad integrated with photodynamically active antibacterial metal-organic frameworks for pufferfish preservation 海藻酸钠/纤维素纳米晶水凝胶垫结合光动力活性抗菌金属有机框架用于河豚鱼保鲜

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

Food Packaging and Shelf Life

Pub Date : 2025-10-12 DOI: 10.1016/j.fpsl.2025.101643

Bakhtawar Shafique , Jin Xu , Xuanyu Li , Jing Xie , Zhaoyang Ding

Pufferfish fillets are highly perishable owing to their biochemical composition, which accelerates spoilage and quality loss during storage. Conventional preservation methods are often insufficient to effectively suppress off-odor formation, inhibit microbial growth, and mitigate the oxidative damage. To address these challenges, we developed a sodium alginate/cellulose nanocrystal (SA/CNC)-based antibacterial modified composite structure (MCS) hydrogel pad (M-TG@CNC-SA) incorporating novel photodynamically active antimicrobial metal-organic frameworks (MOFs). Biocompatible MCS hydrogel pads were fabricated by crosslinking polymers with varying concentrations of M-TG (0.05, 0.1, and 0.2 mg/mL), and their structural and functional properties were comprehensively characterized and compared with those of SA@CNC hydrogels. The preservation efficacy of the hydrogels was evaluated during 15 days of refrigerated storage of pufferfish fillets. Among the tested formulations, the 0.2 mg/mL MCS hydrogel exhibited superior performance, maintaining a water-holding capacity (>80 %), reducing weight loss (4.6 %), reducing yellowing (41.01 %), and stabilizing pH (6.85). This treatment also achieved the lowest levels of total volatile basic nitrogen (17.9 mg/100 g), thiobarbituric acid reactive substances (0.07 mg/kg), and protein carbonyls (2.2 nmol/mg), indicating a strong suppression of protein and lipid oxidation. Mechanistic analyses revealed effective adsorption of spoilage-related odorants (histamine, trimethylamine, hydrogen sulfide) and enhanced reactive oxygen species generation, which increased antibacterial and antioxidant activities. The 0.2 mg/mL MCS hydrogel exhibited the most pronounced antibacterial activity, effectively inhibiting Escherichia coli, Staphylococcus aureus, and Bacillus subtilis. These findings show that photodynamically active MCS hydrogel pads can extend the shelf life and preserve the quality of aquatic products, particularly high-risk species such as pufferfish.

由于河豚鱼片的生化成分，它们极易变质，在储存过程中会加速变质和质量损失。传统的保存方法往往不足以有效地抑制异味的形成，抑制微生物的生长，减轻氧化损伤。为了解决这些挑战，我们开发了一种基于海藻酸钠/纤维素纳米晶体（SA/CNC）的抗菌改性复合结构（MCS）水凝胶垫（M-TG@CNC-SA），其中包含新型光动力活性抗菌金属有机框架（MOFs）。采用不同浓度的M-TG（0.05、0.1和0.2 mg/mL）交联聚合物制备生物相容性MCS水凝胶垫，对其结构和功能特性进行了全面表征，并与SA@CNC水凝胶进行了比较。对水凝胶在河豚鱼片冷藏15 d后的保存效果进行了评价。其中，0.2 mg/mL的MCS水凝胶表现出较好的保水性（>80 %）、减重（4.6 %）、黄变（41.01 %）、pH稳定（6.85）。该处理还获得了最低水平的总挥发性碱性氮（17.9 mg/100 g），硫代巴比妥酸活性物质（0.07 mg/kg）和蛋白质羰基（2.2 nmol/mg），表明对蛋白质和脂质氧化有很强的抑制作用。机理分析表明，它能有效吸附腐败相关的气味剂（组胺、三甲胺、硫化氢），并促进活性氧的生成，从而提高抗菌和抗氧化活性。0.2 mg/mL MCS水凝胶的抑菌活性最明显，能有效抑制大肠杆菌、金黄色葡萄球菌和枯草芽孢杆菌。这些发现表明，光动力活性MCS水凝胶垫可以延长水产品的保质期，并保持其质量，特别是河豚等高风险物种。

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引用次数: 0

Microenvironment-programmed self-activating cascaded chemodynamic antibacterial packaging film with NIR-regulated catalytic activity for prolonged food preservation 具有nir调节催化活性的微环境程序自激活级联化学动力学抗菌包装膜，用于延长食品保存

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

Food Packaging and Shelf Life

Pub Date : 2025-10-08 DOI: 10.1016/j.fpsl.2025.101642

Yiya Ping , Liang Zhang , Mengyi Wang , Bingzhi Li , Linpin Luo , Wenze Wang , Yuechun Li , Wentao Zhang , Mingqiang Zhu , Jianlong Wang

In this study, a nano-platform driven by the microenvironment and photo-controlled catalytic activity was meticulously designed, and a CaO₂@CAFe functional filler was constructed by using chlorogenic acid as a phenolic ligand and ferric ion to co-encapsulate calcium peroxide, creating an antibacterial packaging system (CCF-CS) with in situ self-activation cascade catalytic activity and intelligent enhancement effect of near-infrared light response. In this system, the acidic microenvironment provided by the chitosan (CS) film matrix triggers the CaO₂@CAFe particles to continuously release H₂O₂, the catalytic substrate in which peroxidase plays a role, and "substrate self-supply" is achieved through a cascade reaction. Moreover, the catalytic efficiency of the nanozymes can be positively modulated by the "smart switch" of near-infrared light, enabling a dual-mode antibacterial behavior of "on-demand burst and routine protection". The CCF^0.20-CS film was 99.9 % effective in killing both bacteria and fungi, and significantly extended the shelf life of cherry tomatoes by 10 days. Furthermore, the film exhibits enhanced UV-shielding capability and improved mechanical strength, alongside validated biosafety. These optimal properties underscore the innovative potential and practical superiority of the CCF^0.20-CS packaging system in addressing microbial contamination challenges in food preservation.

本研究精心设计了微环境驱动和光控催化活性的纳米平台，并以绿原酸为酚类配体，与铁离子共包覆过氧化钙，构建了CaO2@CAFe功能填料，构建了具有原位自激活级联催化活性和近红外光响应智能增强效果的抗菌包装体系（CCF-CS）。在该体系中，壳聚糖（CS）膜基质提供的酸性微环境触发CaO2@CAFe颗粒连续释放过氧化氢（H2O2），过氧化氢是过氧化酶发挥作用的催化底物，通过级联反应实现“底物自供”。此外，纳米酶的催化效率可以通过近红外光的“智能开关”进行正向调节，实现“按需爆发和常规保护”的双模式抗菌行为。CCF0.20-CS膜对细菌和真菌的杀灭率为99.9 %，可将圣女果的保质期延长10天。此外，该膜具有增强的紫外线屏蔽能力和提高的机械强度，以及经过验证的生物安全性。这些最佳性能强调了CCF0.20-CS包装系统在解决食品保存中微生物污染挑战方面的创新潜力和实用优势。

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引用次数: 0

Highly effective antimicrobial films for food packaging using Schisandra chinensis extract and uncovering the contributing components via a novel deep learning approach 高效抗菌薄膜食品包装使用五味子提取物和揭示贡献成分通过一种新的深度学习方法

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

Food Packaging and Shelf Life

Pub Date : 2025-10-07 DOI: 10.1016/j.fpsl.2025.101636

Shanxue Jiang , Wenting Jia , Luqman Hakim Mohd Azmi , Haishu Sun , Yushuang Li

The growing demand to replace synthetic antimicrobials in food packaging has driven the development of effective and safe natural alternatives. In this study, high-performance antimicrobial films were developed by incorporating Schisandra chinensis extract into a PLA-PBAT polymer matrix. Extraction was first optimized using ethanol at concentrations ranging from 25 % to 100 %, with 100 % ethanol yielding the highest antibacterial activity based on inhibition zone assays. The extract exhibited broad-spectrum antimicrobial effects against Staphylococcus aureus, MRSA, Escherichia coli, and Listeria monocytogenes, showing lower minimum inhibitory concentration and minimum bactericidal concentration values compared to conventional preservatives. A deep learning model trained on 40,259 compounds achieved 99.90 % accuracy on the training set. When applied to the 104 compounds identified in Schisandra chinensis, the model, using a probability threshold of 0.8, classified 65 as antimicrobial agents, including known compounds such as quercetin, catechin, and caffeic acid, alongside numerous understudied constituents, indicating a synergistic antimicrobial mechanism. The optimized film (SCE_AE), prepared with anhydrous ethanol as a solubilizing agent, demonstrated strong inhibition against all four pathogens over a 12 h period, and demonstrated reusability without loss of activity. In practical fruit preservation tests, the prepared film significantly extended the shelf life of strawberries and apricots, outperforming both conventional plastic wrap and silver-based antimicrobial films. This work establishes an integrated strategy combining experimental extraction, film preparation, and deep learning-based compound screening to accelerate the development of high-performance and sustainable food packaging materials.

替代食品包装中合成抗菌剂的需求日益增长，推动了有效和安全的天然替代品的发展。在本研究中，将五味子提取物掺入PLA-PBAT聚合物基质中制备了高性能抗菌膜。首先用乙醇在25 % ~ 100 %的浓度范围内优化提取，根据抑制区测定，100 %乙醇的抑菌活性最高。该提取物对金黄色葡萄球菌、MRSA、大肠杆菌和单核增生李斯特菌具有广谱抗菌作用，与传统防腐剂相比，具有更低的最低抑菌浓度和最低杀菌浓度值。在40,259种化合物上训练的深度学习模型在训练集上达到99.90 %的准确率。当应用到五味子中鉴定的104种化合物时，该模型使用0.8的概率阈值将65种化合物分类为抗菌剂，包括已知的化合物，如槲皮素、儿茶素和咖啡酸，以及许多未被研究的成分，表明协同抗菌机制。以无水乙醇为增溶剂制备的优化膜（SCEAE）在12 h的时间内对所有四种病原体都有很强的抑制作用，并且可以重复使用而不丧失活性。在实际的水果保鲜试验中，制备的薄膜显著延长了草莓和杏的保质期，优于传统的保鲜膜和银基抗菌薄膜。本工作建立了实验提取、膜制备和基于深度学习的化合物筛选相结合的综合策略，以加速高性能和可持续食品包装材料的开发。

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引用次数: 0

High-performance edible alginate straws constructed with zein coatings by phase separation and electrostatic assembly after gradient diffusion 采用梯度扩散相分离和静电组装法制备玉米蛋白涂层的高性能食用海藻酸盐吸管

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

Food Packaging and Shelf Life

Pub Date : 2025-10-07 DOI: 10.1016/j.fpsl.2025.101634

Yunpeng Qu , Yuanpu Liu , Kexin Shi , Jiabo Wang , Yanfei Wang , Meng Ma , Qingjie Sun , Fengwei Xie , Man Li

This study developed high-performance, water-resistant edible alginate-based straws by applying a dense zein coating to the surface through controlled phase separation and electrostatic assembly of zein and sodium alginate (SA) following gradient diffusion molding. The zein coating significantly enhanced the anti-swelling properties and surface hydrophobicity of the straws. Specifically, phase separation was introduced by disrupting the alcohol-water solvent system of the zein solution, enabling zein to solidify onto the straw surface. Simultaneously, the negatively charged alginate facilitated electrostatic interactions with the positively charged zein, ensuring stable interlayer bonding. The synergistic regulating of phase separation and electrostatic assembly was systematically investigated to achieve a robust integration with the straw matrix. Scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM) imaging revealed that a continuous and uniform zein coating was formed using a 2 % zein solution at pH 4. Compared to the control, the water resistance of the straw improved significantly, with the water contact angle (1 min) increasing by 45.2 % and the swelling ratio (30 min) decreasing by 53.1 %. Additionally, the straws demonstrated complete degradation within 90 days, outperforming even paper straws. The zein-coated alginate-based straws exhibited superior overall performance, positioning it as a highly promising alternative to plastic straws.

本研究在梯度扩散成型后，通过控制相分离和玉米蛋白与海藻酸钠（SA）的静电组装，在表面涂上密集的玉米蛋白涂层，开发出高性能、耐水的可食用海藻酸盐基吸管。玉米蛋白包被显著提高了秸秆的抗膨胀性能和表面疏水性。具体来说，通过破坏玉米蛋白溶液的醇-水溶剂体系来引入相分离，使玉米蛋白凝固在秸秆表面。同时，带负电的海藻酸盐促进了与带正电的玉米蛋白的静电相互作用，确保了层间键的稳定。系统地研究了相分离和静电组装的协同调节，以实现与秸秆基质的鲁棒集成。扫描电镜（SEM）和共聚焦激光扫描显微镜（CLSM）成像结果表明，在pH值为4的情况下，使用2 %的玉米蛋白溶液可形成连续均匀的玉米蛋白涂层。与对照相比，秸秆抗水性能显著提高，水接触角（1 min）提高45.2% %，膨胀率（30 min）降低53.1 %。此外，吸管在90天内完全降解，甚至优于纸质吸管。玉米蛋白包被海藻酸盐基吸管表现出优越的整体性能，使其成为塑料吸管的极有前途的替代品。

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引用次数: 0

Preparation, safety assessment and application of lanthanum pyrithione-based antimicrobial films for strawberry preservation 吡啶硫酮镧基草莓保鲜膜的制备、安全性评价及应用

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

Food Packaging and Shelf Life

Pub Date : 2025-10-06 DOI: 10.1016/j.fpsl.2025.101639

Min Liu , Jinglei Li , Qiuyin Zhu , Shenglong Wang , Yuan Zhang , Tungalag Dong , Lijun Song , Xueyan Yun

Food spoilage-induced safety issues represent a significant global challenge, as conventional packaging materials lack antimicrobial functionality to effectively inhibit surface microbial proliferation. Rare earth complex antimicrobial agents offer promising solutions due to their broad-spectrum activity, low toxicity, and excellent thermal stability. The synthesis, characterization, and application of a lanthanum pyrithione (LaPT) complex in antimicrobial films for strawberry preservation were investigated. LaPT was confirmed by FT-IR, XRD, TGA, and SEM to possess a stable chemical structure and excellent thermal stability. Antimicrobial activity was assessed using disk diffusion and minimum inhibitory concentration assays, and significant inhibition of Botrytis cinerea, Escherichia coli, and Staphylococcus aureus was observed. Polyethylene (PE) composite films containing 0.3 % and 0.5 % LaPT were fabricated by melt blending without compromising thermal or mechanical properties. The 0.3 % LaPT film achieved > 99.9 % inhibition of Escherichia coli and Staphylococcus aureus within 24 h. Safety was evaluated by ICP-MS, and migration followed the order acidic > aqueous > alcoholic > fatty food simulants, with a maximum of 15.2 μg/dm², well below EU limits (10 mg/dm²). Cytotoxicity testing yielded an IC₅₀ of 200 μg/mL, acute oral toxicity (LD₅₀: 1.33–1.71 g/kg·bw) indicated low toxicity, and subacute studies revealed no adverse effects. In strawberry preservation trials, LaPT-based antimicrobial films extended shelf life while maintaining fruit quality parameters, supporting their potential for food packaging applications.

由于传统包装材料缺乏抗菌功能，无法有效抑制表面微生物的增殖，食品腐败引起的安全问题是一个重大的全球性挑战。稀土复合抗菌剂具有广谱活性、低毒性和优异的热稳定性，是一种很有前途的抗菌剂。研究了吡硫酮镧（LaPT）配合物的合成、表征及其在草莓保鲜膜中的应用。经FT-IR、XRD、TGA、SEM等测试证实，LaPT具有稳定的化学结构和优异的热稳定性。采用圆盘扩散法和最低抑菌浓度法评估其抗菌活性，并观察到对葡萄球菌、大肠杆菌和金黄色葡萄球菌的显著抑制作用。采用熔融共混的方法制备了含有0.3 %和0.5 % LaPT的聚乙烯（PE）复合薄膜，而不影响热性能和机械性能。0.3 % LaPT膜在24 h内对大肠杆菌和金黄色葡萄球菌的抑制率达到了>； 99.9 %。通过ICP-MS评估了安全性，迁移顺序为酸性>； 含水>； 酒精>； 脂肪类食品模拟物，最大值为15.2 μg/dm2，远低于欧盟限值（10 mg/dm2）。细胞毒性测试显示IC50为200 μg/mL，急性口服毒性（LD50: 1.33-1.71 g/kg·bw）显示低毒，亚急性研究显示无不良反应。在草莓保鲜试验中，基于lapd的抗菌膜延长了保质期，同时保持了水果的质量参数，支持了它们在食品包装应用中的潜力。

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引用次数: 0

Design strategies for sustainable gas barrier coatings in food packaging via wet deposition technologies 通过湿沉积技术设计食品包装中可持续气体屏障涂层的策略

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

Food Packaging and Shelf Life

Pub Date : 2025-10-04 DOI: 10.1016/j.fpsl.2025.101635

Filippo Ghisoni, Andrea Fiorati, Luigi De Nardo

The gas barrier properties of packaging materials play a pivotal role in determining the fate of packaged food products. While multilayer composites provide precise control over gas transport, the growing demand for sustainability is stimulating research into barrier layers compatible with key polymer end-of-life pathways, including recyclability or composting. This review examines the technological advancements and design strategies for barrier coatings in food packaging, with a focus on wet coating technologies for polymers. The first section introduces the permeation theory and mass transport phenomena in multilayers. The second part delves into assessing various barrier coating systems, comparing key wet coating technologies reported in scientific literature, including organic-inorganic hybrid, nanocomposite, and multilayer coatings. The final section discusses significant findings and offers insights into the design of high-barrier wet coatings while considering their end-of-life implications and potential for industrial upscaling. This comprehensive review aims to highlight the critical role of innovative high-barrier coatings’ in overcoming the limitations of current multilayer composites, thereby fostering improved sustainability and preservation performance in food packaging applications.

包装材料的气体阻隔性能对包装食品的命运起着举足轻重的作用。虽然多层复合材料提供了对气体输送的精确控制，但对可持续性的需求日益增长，这刺激了对与关键聚合物报废途径兼容的屏障层的研究，包括可回收性或堆肥性。本文综述了食品包装中屏障涂层的技术进步和设计策略，重点介绍了聚合物的湿涂层技术。第一部分介绍了多层介质的渗透理论和质量输运现象。第二部分深入评估各种屏障涂层系统，比较科学文献中报道的关键湿涂层技术，包括有机-无机杂化、纳米复合和多层涂层。最后一节讨论了重要的发现，并提供了对高屏障湿涂层设计的见解，同时考虑了它们的寿命终结影响和工业升级的潜力。这篇全面的综述旨在强调创新的高阻隔涂层在克服当前多层复合材料的局限性方面的关键作用，从而促进食品包装应用的可持续性和保存性能的提高。

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引用次数: 0

Preparation of PFAS-free oil-resistant paper using a lignin-based resin 木质素基树脂制备不含pfas的耐油纸

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

Food Packaging and Shelf Life

Pub Date : 2025-10-04 DOI: 10.1016/j.fpsl.2025.101640

Shahab Saedi , Zhongjin Zhou , Mi Li , Siqun Wang

Per- and polyfluoroalkyl substances (PFAS) are widely used in paper-based, molded-pulp tableware and food containers to impart oil-resistant characteristics. Due to the risk associated with their accumulation in the human body and related health problems, the demand is rising for replacing PFAS with safe and environmentally friendly alternatives. In this work, for the first time, we successfully prepared oil-resistant papers using a lignin-based, formaldehyde-free resole resin. We produced a lignin-based resin using Kraft lignin and glyoxal. Regular folder papers were coated with different thicknesses (30, 60, 90, and 120 µm) of prepared resin. They dried in air and then pressed at various temperatures (140, 160, and 180 °C) for different durations (15, 30, 60, 120, and 240 s). Our results indicate that regardless of pressing time and temperature, coating paper with a suitable amount of resin can effectively block oil penetration and meet the industry's requirements. When 120 µm of prepared resin is used, the coated paper can block the hot oil (65 °C) for more than 40 min and bring kit number into 12.

全氟烷基和多氟烷基物质（PFAS）广泛用于纸基、模塑纸浆餐具和食品容器中，以赋予其耐油特性。由于它们在人体内积累的风险和相关的健康问题，用安全和环境友好的替代品取代全氟磺酸的需求正在增加。在这项工作中，我们首次成功地使用木质素为基础的无甲醛溶解树脂制备了耐油纸。我们用卡夫木质素和乙二醛生产木质素基树脂。常规文件夹纸涂上不同厚度的树脂（30、60、90和120 µm）。它们在空气中干燥，然后在不同温度（140、160和180°C）下按压不同的持续时间（15、30、60、120和240 s）。结果表明，无论压印时间和压印温度如何，在涂布纸上添加适量的树脂都能有效地阻断油的渗透，达到行业要求。当使用120 µm制备的树脂时，铜版纸可以阻挡热油（65°C） 40 min以上，试剂盒数量为12。

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引用次数: 0

Chitosan-based coatings and films: Mechanisms and applications in postharvest preservation of mangoes 壳聚糖基涂层和薄膜：芒果采后保鲜的机理及其应用

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

Food Packaging and Shelf Life

Pub Date : 2025-10-03 DOI: 10.1016/j.fpsl.2025.101638

Guohui Yi , Simin Fan , Huanqi Wu , Ajahar Khan , Ruchir Priyadarshi , Wanying Sun , Derong Lin , Yiqin Zhang

Mangoes, a globally significant tropical fruit, suffer substantial postharvest losses due to ethylene sensitivity, chilling injury, and fungal infections. Chitosan-based coatings and films have emerged as sustainable solutions to mitigate these challenges. This review elucidates the mechanisms by which chitosan preserves mango quality, including the formation of a semi-permeable barrier to regulate gas exchange and moisture loss, direct antimicrobial activity against pathogens like Colletotrichum spp., and induction of systemic resistance through defense-related enzyme activation. Furthermore, chitosan’s antioxidant properties delay oxidative senescence by scavenging reactive oxygen species. Recent advancements in composite formulations—such as blending chitosan with polysaccharides, proteins, nanoparticles, and plant-derived extracts—enhance mechanical strength, barrier properties, and bioactive performance. Despite promising laboratory results, challenges persist in scaling up production, optimizing additive concentrations to balance efficacy and phytotoxicity, and ensuring regulatory compliance. This work consolidates fragmented knowledge, providing a theoretical framework for chitosan-based preservation technologies and highlighting future directions for sustainable postharvest management of climacteric fruits.

芒果是一种全球重要的热带水果，由于乙烯敏感性、冷害和真菌感染，芒果遭受了大量的采后损失。壳聚糖基涂料和薄膜已经成为缓解这些挑战的可持续解决方案。本文综述了壳聚糖保持芒果品质的机制，包括形成半透性屏障来调节气体交换和水分损失，对炭疽杆菌等病原体的直接抗菌活性，以及通过防御相关酶激活诱导全身抗性。此外，壳聚糖的抗氧化性能通过清除活性氧来延缓氧化性衰老。复合配方的最新进展-例如将壳聚糖与多糖，蛋白质，纳米颗粒和植物提取物混合-提高了机械强度，屏障性能和生物活性性能。尽管实验室结果令人鼓舞，但在扩大生产、优化添加剂浓度以平衡功效和植物毒性以及确保合规性方面仍然存在挑战。本研究整合了零散的知识，为基于壳聚糖的保鲜技术提供了理论框架，并为更年期水果的可持续采后管理指明了未来的方向。

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引用次数: 0

Curcumin-loaded electrospun nanofiber film based on polyvinyl alcohol and myofibrillar protein for active packaging of strawberry 基于聚乙烯醇和肌纤维蛋白的负载姜黄素静电纺纳米纤维薄膜在草莓活性包装中的应用

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

Food Packaging and Shelf Life

Pub Date : 2025-10-03 DOI: 10.1016/j.fpsl.2025.101637

Junchao Huang , Zhiyu Li , Zijia Zhan , Jingzhao Feng , Zhijie Zheng , Yijing Wu , Shoukai Lin , Qibiao Weng , Jianyi Wang , Jie Yang , Yuting Tian

Functional packaging that combines physical durability with bioactivity is vital for long-term food quality maintenance. This study presents the first attempt to develop a functional nanofiber film by utilizing the self-assembly potential and hydrophobic amino acid content of myofibrillar protein (MP) to enhance the encapsulation and release behavior of curcumin (CUR) for food preservation applications. On this basis, a water-based electrospun nanofibrous film comprising polyvinyl alcohol (PVA), MP, and CUR was fabricated for use in active food packaging, where the effects of varying MP incorporation levels (0–40 %) on the structural characteristics, functional properties, CUR encapsulation efficiency and release behavior of PVA-based films were systematically investigated. The incorporation of 20 % MP (8PVA-2MP) significantly improved functional performances, increasing tensile strength from 4.4 MPa to 18.5 MPa and enhancing hydrophobicity, with the water contact angle rising from 57.4° to 71.0°. Moreover, 8PVA-2MP-CUR film (80 % PVA + 20 % MP with the CUR addition) exhibited the highest CUR encapsulation efficiency (79.73 ± 1.23 %) along with the strongest antioxidant and antibacterial activities. Notably, CUR release from the 8PVA-2MP-CUR film followed Fickian diffusion kinetics with a sustained release profile, which effectively prolonged the storage life of fresh strawberries, as evidenced by reduced weight loss, delayed visible spoilage, and better firmness retention in strawberries after 8 days. Furthermore, biodegradability tests confirmed that MP-containing films exhibited desirable environmental degradability. Overall, PVA coupled with suitable MP content was capable of self-assembling into a high-performance packaging film with excellent functional properties highlighting its potential as a sustainable and intelligent packaging material.

结合物理耐用性和生物活性的功能性包装对于食品质量的长期维持至关重要。本研究首次尝试利用肌纤维蛋白（myofibrar protein， MP）的自组装电位和疏水氨基酸含量来开发功能性纳米纤维膜，以增强姜黄素（curcumin， CUR）的包封和释放行为，用于食品保鲜。在此基础上，制备了一种由聚乙烯醇（PVA）、MP和CUR组成的水基电纺纳米纤维膜，用于活性食品包装，系统研究了不同MP掺入量（0-40 %）对PVA基膜的结构特性、功能特性、CUR包封效率和释放行为的影响。20 % MP （8PVA-2MP）的掺入显著改善了功能性能，拉伸强度从4.4 MPa提高到18.5 MPa，疏水性增强，水接触角从57.4°提高到71.0°。此外，8PVA-2MP-CUR膜（80 % PVA + 20 % MP，添加CUR）具有最高的CUR包封率（79.73±1.23 %）和最强的抗氧化和抗菌活性。值得注意的是，从8PVA-2MP-CUR薄膜中释放CUR符合菲克氏扩散动力学，具有缓释特征，有效延长了新鲜草莓的储存寿命，表现为减少了草莓的重量损失，延缓了明显的腐败，8天后草莓的硬度保持更好。此外，生物降解性测试证实，含有mp的膜具有良好的环境降解性。总的来说，PVA与合适的MP含量相结合，能够自组装成具有优异功能特性的高性能包装膜，突出了其作为可持续和智能包装材料的潜力。

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引用次数: 0

Water vapor transmission rate prediction: The case-study of a biopolymer-based capsule for food applications 水蒸汽透过率预测：食品用生物聚合物胶囊的案例研究

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

Food Packaging and Shelf Life

Pub Date : 2025-10-01 DOI: 10.1016/j.fpsl.2025.101633

Marco Lopriore , Michele Libralato , Giovanni Cortella , Sergio Maiandi , Maria Cristina Nicoli , Amalia Conte , Matteo Alessandro Del Nobile

The effect of environmental humidity on the moisture barrier properties of biobased packaging remains a critical challenge for shelf life prediction. Indeed, biobased materials often exhibit variable moisture permeability, which typically increases with rising environmental humidity, leading to undesired moisture uptake during storage. In this context, the present study aims to predict the influence of environmental humidity on steady-state water vapor mass flux using a case study of a commercial biopolymer-based capsule designed for packaging dry food powders. To achieve this goal, water vapor sorption tests were conducted across increasing water activity (a_w) levels to estimate the water sorption isotherm and the diffusion coefficient. A sorption apparatus equipped with a climatic chamber that automatically measured the samples’ weight was employed, with equilibrium defined as a mass variation not exceeding 0.01 % over 7 h. Subsequently, the obtained water vapor sorption kinetics were modelled using a non-Fickian approach that simultaneously accounts Fickian diffusion and polymer matrix relaxation. These results were then used to predict the dependence of the water vapor transmission rate (WVTR) on upstream and downstream a_w. To validate the model, WVTR tests were performed at various upstream a_w levels while maintaining downstream a_w at zero. The relative percent difference between predicted and measured WVTR values was 32.2, which is an acceptable value, considering the complexity of the phenomena involved, and the simplicity of the model used.

环境湿度对生物基包装防潮性能的影响仍然是保质期预测的关键挑战。事实上，生物基材料通常表现出可变的透湿性，通常随着环境湿度的上升而增加，导致在储存过程中不希望吸收水分。在此背景下，本研究旨在预测环境湿度对稳态水蒸气质量通量的影响，并以一种用于包装干燥食品粉末的商用生物聚合物胶囊为例进行研究。为了实现这一目标，在不断增加的水活度（aw）水平上进行了水蒸气吸附试验，以估计水吸附等温线和扩散系数。采用装有自动测量样品重量的气候室的吸附装置，平衡定义为质量变化在7 h内不超过0.01 %。随后，得到的水蒸气吸附动力学使用非菲克方法建模，同时考虑菲克扩散和聚合物基体弛豫。然后利用这些结果来预测水汽透过率（WVTR）对上游和下游aw的依赖关系。为了验证模型，在保持下游aw为零的情况下，在不同的上游aw水平上进行WVTR测试。预测值与实测值之间的相对差值为32.2，考虑到所涉及现象的复杂性和所使用模型的简单性，这是一个可以接受的值。

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