用Posidonia oceanica生物合成的素-纳米复合物的特性和抗菌活性
Wessam A Abd-Elraoof1, Ahmed A Tayel1, Shaymaa W El-Far2
1Department of Fish Processing and Biotechnology, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University Kafr El Sheikh city 33516 Egypt.
RSC advances
|September 4, 2023
概括
这项研究开发了用于食品保存的新型素 (Cht),海王星草 (NG) 和纳米颗粒 (SeNPs) 纳米复合材料. 这种Cht/NG/SeNPs表现出强大的抗菌和抗氧化特性,有效保存肉片.
科学领域:
- 纳米生物技术纳米生物技术
- 食品科学 食品科学 食品科学
- 材料科学 材料科学 材料科学
背景情况:
- 食品污染和腐败对食品安全和保质期构成重大挑战.
- 开发快速,环保和有效的保存方法对食品工业至关重要.
研究的目的:
- 通过使用素纳米颗粒 (Cht),海王星草 (NG) 提取物和NG介导的纳米颗粒 (SeNPs) 合成和表征新型纳米复合材料.
- 评估这些纳米复合材料的抗菌,抗氧化和生物保存潜力,用于新鲜的肉片.
主要方法:
- 使用NG提取物生物合成SeNPs,然后与Ch结合以形成Ch/NG/SeNPs纳米复合材料.
- 使用红外分析,生理学分析和电子显微镜进行表征.
- 对*黄金葡萄球菌*,*沙门氏菌*和*大肠杆菌*的抗菌活性评估.
- 评估抗氧化能力和作为肉片的涂层的应用,评估冷藏期间的微生物和感官参数.
主要成果:
- 成功合成了具有球形形态和正表面电荷的NG/SeNPs (12.41 nm) 和Cht/NG/SeNPs (164.61 nm).
- 证明了Cht/NG/SeNPs对测试病原体的显著抗菌活性,其中*Salmonella typhimurium*是最容易受到影响的.
- 超结构成像显示,在暴露于ChT/NG/SeNPs时,细菌细胞的严重,时间依赖的破坏.
- CHT/NG/SeNPs表现出最高的抗氧化能力 (91.36%).
- 在冷藏14天后,用Cht/NG/SeNPs涂覆肉片显著降低了微生物数量,并改善了感官属性.
结论:
- 简单且环保的CHT/NG/SeNPs合成为开发有效的抗微生物和抗氧化剂提供了有前途的方法.
- 这些纳米复合材料在食品生物保存中具有显著的应用潜力,提高了易腐烂产品 (如肉片) 的安全性和保质期.
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