可生物降解的/PEG纳米纤维与天然抗菌化合物结合,用于环保食品包装
Pavel Pleva1, Lucie Bartošová1, Magda Janalíková1
1Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, Zlín 760 01, Czech Republic.
New biotechnology
|March 20, 2025
概括
由和PEG制成的新型纳米纤维膜,包含天然抗菌素,显示出食品包装的潜力. 这些生物活性材料有效抑制细菌生长和生物膜的形成,提高食品的保质期.
科学领域:
- 生物材料科学 生物材料科学
- 食品科学与技术 食品科学与技术
- 聚合物科学 聚合物科学
背景情况:
- 和聚乙烯甘醇 (PEG) 是生物相容的聚合物,具有功能性材料开发的潜力.
- 天然抗菌化合物为食品应用提供了合成防腐剂的替代品.
- 电是一种多功能技术,用于制造具有高表面积的纳米纤维材料.
研究的目的:
- 制造和描述与天然抗微生物化合物 (eugenol,thymol,nisin) 结合的电线/PEG纳米纤维膜.
- 评估开发的生物活性膜对食源性病原体的抗微生物活性和抗菌膜疗效.
- 评估抗微生物添加对可持续食品包装膜的结构,热和生物降解性质的影响.
主要方法:
- 通过电制造/PEG纳米纤维的制造.
- 将欧原醇,胆醇和/或尼纳入 zein/PEG 矩阵.
- 使用SEM和TGA等技术进行结构和热分析.
- 对大肠杆菌,黄金葡萄球菌和李斯特菌的抗菌活性测试.
- 生物膜抑制测定.生物膜抑制测定.
- 生物降解性测试.生物降解性测试.
主要成果:
- 电成功生产了Tien/PEG纳米纤维,平均直径在300至390nm之间.
- 尤根醇和提摩尔有效地抑制了大肠杆菌和金黄色葡萄球菌的生长.
- 尼辛及其与的组合显示出对Listeria ivanovii的高抗菌活性.
- 含有生物活性分子的Zeen/PEG膜显著降低了生物膜的形成,特别是欧原醇/甲基醇组合.
- 添加抗微生物药物并没有显著影响 zein/PEG 纳米纤维的结构完整性或热性能.
- 生物降解性测试显示,与对照样本相比,降解过程没有显著减缓.
结论:
- 用天然抗微生物剂丰富的电/PEG纳米纤维膜具有显著的抗微生物和抗菌膜特性.
- 这些生物活性膜显示出开发可持续食品包装解决方案的前景,以延长食品的保质期并保持质量.
- 齐恩,PEG,尤根醇和胆醇的组合在防止细菌生长和生物膜形成方面特别有效.
更多相关视频
相关概念视频
01:28Biological Methods for Microbial Control
Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
01:23Microbial Spoilage of Food
Microbial food spoilage refers to the degradation of food quality resulting from the metabolic activity of microorganisms such as bacteria, yeasts, and molds. These microbes proliferate on various food substrates depending on factors such as moisture content, nutrient availability, and storage conditions, leading to undesirable sensory and structural changes.Bacteria are primary agents of spoilage in high-moisture, nutrient-dense foods like meat, milk, and vegetables. Microbial spoilage occurs...
01:27Bioplastics
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
01:28Microbial Bioremediation of Plastics
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...