中文摘要：目前，为了保证食品的质量和安全，需要一种用可生物降解且无化学抗菌化合物的新型活性食品包装材料。本研究将肠炎沙门氏菌噬菌体felixo1，作为潜在的沙门氏菌抗菌剂，掺入聚乙烯醇（PVOH）涂层和纤维，通过浇铸和静电纺丝沉积在聚羟基丁酸酯/聚羟基戊酸酯（PHBV）膜上。并研究了PHBV膜（原始膜、涂层膜和纳米纤维膜）的水敏性、力学性能、形貌和热性能。此外，通过x射线衍射和傅里叶变换红外光谱研究了PVOH沉积和噬菌体的存在对PHBV膜可能的化学修饰。PVOH使水分含量从5.98%(PHBV膜)分别增加到 8.94%（PHBV/涂层膜）和8.28%（PHBV/纳米纤维膜）,溶解度从0%(PHBV) 增加到30.32% (PHBV/涂层膜)和32.42% (PHBV/纳米纤维膜),且增加了膜的亲水性(PHBV的接触角76.31度,PHBV/涂层膜64.01度，PHBV/纳米纤维膜30.90度)，使其表面的水亲和力增加。在涂层和纳米纤维形成后，Felix O1添加成功并保持了抗菌活性（10（6）滴度），证明这些材料未来可用于包装，避免沙门氏菌污染。
外文摘要：There is a current demand for novel active food packaging solutions using biodegradable materials and no chemical antimicrobial compounds, to ensure food quality and safety. This work involved the incorporation of Salmonella Enteritidis bacteriophage Felix O1, for potential use as an anti-Salmonella agent, into polyvinyl alcohol (PVOH) coatings and fibers deposited by casting and electrospinning on polyhydroxybutyrate/polyhydroxyvalerate (PHBV) films. PHBV films (pristine, with coating, and with nanofibers) were characterized in terms of water sensitivity, mechanical performance, morphology, and thermal properties. Additionally, X-ray diffraction and Fourier Transform Infrared Spectroscopy were performed to assess possible chemical modifications on PHBV films after PVOH deposition and the presence of bacteriophage. PVOH increased the moisture content from 5.98% (PHBV) to 8.94% and 8.28% for PHBV/coating films and PHBV/nanofiber films respectively, increased the solubility from 0% (PHBV) to 30.32% (PHBV/coating films) and to 32.42% (PHBV/nanofiber films), and increased the hydrophilicity of the films (contact angle of 76.31 degrees for PHBV, 64.01. for PHBV/coating films and 30.90 degrees for PHBV/nanofiber films), leading to an increased water affinity of their surface. Felix O1 was successfully added and maintained antimicrobial activity (10(6) titer) after the formation of the coating and nanofibers, demonstrating that these solutions can potentially be used in future packaging materials to avoid Salmonella contamination.
外文关键词：Active packaging；Antimicrobial；Film；Coating；Nanofiber；Biodegradable
作者：Costa, MJ；Pastrana, LM；Teixeira, JA；Sillankorva, SM；Cerqueira, MA
作者单位：Univ Minho；Int Iberian Nanotechnol Lab
期刊名称：INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES
期刊影响因子：4.477
出版年份：2021
出版刊次：69
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