加入银纳米粒子的山药黏液纳米复合膜延长了双孢蘑菇的保质期，并保持了采后品质

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2025-04-26 DOI:10.1016/j.porgcoat.2025.109332

Yuting Chen , Anbazhagan Sathiyaseelan , Xin Zhang , Yingshan Jin , Myeong-Hyeon Wang

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引用次数: 0

摘要

使用嵌入金属纳米颗粒的聚合物开发的抗菌食品包装通过预防食源性疾病延长了新鲜食品的保质期。本研究利用山药黏液提取物合成银纳米粒子（yam - agnps），并将yam - agnps与山药/PVA复合材料共混形成薄膜（yam /PVA- agnps）。Yam-AgNPs的最大吸光度为414 nm， TEM证实其平均吸光度为16.02±7.39 nm。SEM证实Yam- agnps分散在Yam/PVA表面。Yam/PVA-AgNPs薄膜（F3）具有良好的抗紫外线性能（T280 = 80.12%）、透明度（T660 = 64.54%）、溶胀性（636.23%）和水溶性（52.26%）。此外，F3具有良好的抑菌活性，对病原菌的生物膜抑制率超过73.80%。与Yam- agnps相比，Yam/PVA-AgNPs膜对金黄色葡萄球菌（18.42 μg/mL）和大肠杆菌（19.48 μg/mL）的蛋白渗漏效果相似。此外，用于包装双孢蘑菇的Yam/PVA-AgNPs薄膜（F3）在4°C的储存过程中表现出较强的防止食物病原体引起的腐败的能力，并保持原有的颜色和形态。F3显著抑制了蘑菇的呼吸速率和水分流失，使蘑菇的失重率降低了11.48%，MDA含量为1.18 nmol/g FW， 12 d后均低于山药/PVA膜处理和未包装的对照。此外，F3保存了活性物质（总糖和总酚类物质），抑制了嗜冷细菌的生长，第12天细菌数量为4.32±0.23 Log₁₀CFU/g。上述结果表明，山药/PVA-AgNPs薄膜可作为食品保鲜的抗菌包装材料。

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Yam mucilage nanocomposite film incorporated silver nanoparticles extend the shelf life and preserve the postharvest quality of Agaricus bisporus

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Yam mucilage nanocomposite film incorporated silver nanoparticles extend the shelf life and preserve the postharvest quality of Agaricus bisporus

The development of antimicrobial food packaging using polymers embedded with metallic nanoparticles has extended the shelf life of fresh foods by preventing food-borne illnesses. This study used yam mucilage extracts to synthesize silver nanoparticles (Yam-AgNPs) and Yam-AgNPs blended with Yam/PVA composite to form films (Yam/PVA-AgNPs). Yam-AgNPs showed maximum absorbance at 414 nm, and TEM confirmed the spherical particles with an average of 16.02 ± 7.39 nm. SEM evidenced that the Yam-AgNPs were dispersed in the Yam/PVA surface. Yam/PVA-AgNPs film (F3) possesses a good UV barrier (T₂₈₀ = 80.12 %), transparency (T₆₆₀ = 64.54 %), swelling (636.23 %), and water solubility (52.26 %) properties. Furthermore, F3 exhibited good antibacterial activity, with biofilm inhibition exceeding 73.80 % against pathogens. Compared to Yam-AgNPs, the Yam/PVA-AgNPs film had a similar effect on protein leakage in S. aureus (18.42 μg/mL) and E. coli (19.48 μg/mL). In addition, the Yam/PVA-AgNPs film (F3) used for packaging Agaricus bisporus mushrooms demonstrated a strong ability to prevent food pathogen-induced spoilage and maintain the original color and morphology during storage at 4 °C. F3 significantly inhibited the respiration rate and water loss of mushrooms, resulting in a weight loss of 11.48 % and an MDA content of 1.18 nmol/g FW, both of which were lower than those observed with the Yam/PVA film and the control (without packaging) after 12 days. Furthermore, F3 preserved active substances (total sugars and total phenolics) and inhibited the growth of psychrophilic bacteria, with a bacterial count of 4.32 ± 0.23 Log₁₀ CFU/g at 12th day. These results suggest that Yam/PVA-AgNPs film can serve as antimicrobial packaging materials for food preservation.

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来源期刊

Progress in Organic Coatings 工程技术-材料科学：膜

CiteScore

11.40

自引率

15.20%

发文量

577

审稿时长

48 days

期刊介绍： The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as: • Chemical, physical and technological properties of organic coatings and related materials • Problems and methods of preparation, manufacture and application of these materials • Performance, testing and analysis.