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装有银纳米颗粒的宁微纳米球具有出色的抗菌活性

Yan Feng¹, Fan Yang¹, Wenjin Yuan¹

¹College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

International journal of biological macromolecules

|June 21, 2025

概括

这项研究开发了充满银纳米粒子 (AgNPs/LMNs) 的稳定素微纳米圈,用于增强抗菌应用. 这种新型复合物对大肠杆菌和黄金杆菌表现出更高的疗效,降低了超过90%的所需度.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
生物技术是生物技术.

背景情况:

银纳米粒子 (AgNPs) 具有广泛的抗菌特性,但遭受不稳定性和聚合.
开发稳定有效的AgNP传递系统对于先进的抗菌材料至关重要.
素微纳米球 (LMNs) 为纳米粒子封装提供了一个有前途的生物相容平台.

研究的目的:

合成和表征装载在线素微纳米圈 (AgNPs/LMNs) 中的银纳米粒子.
评估新型AgNPs/LMNs复合物的稳定性,可分散性和抗菌疗效.
研究AgNPs/LMNs与光热处理的协同抗菌作用.

主要方法:

通过化学还原方法制备AgNPs/LMNs复合物.
对Ag/Ag+释放动力学和纳米粒子稳定性的评估.
对抗大肠杆菌和金黄色葡萄球菌的最小杀菌度 (MBC) 的确定.
用光热辅助和不使用光热辅助对抗菌活性的评估.

主要成果:

该AgNP/LMNs复合物表现出AgNP的增强稳定性和分散性,Ag/Ag+释放最小 (在24小时内<2.25%).
AgNP / LMN 显示出强大的抗菌活性,对抗格兰阴性大肠杆菌和格兰阳性黄金色杆菌.
光热辅助治疗显著降低了MBC值,与传统AgNPs复合材料相比,需要90%以上的抗菌剂.

结论:

AgNP / LMN 是一种高度稳定和有效的抗菌材料.
复合物利用AgNP诱导的细胞膜损伤通过反应性氧物种和银离子释放.
这种方法为开发先进,高效的抗菌剂提供了一种优越的策略,减少了对成分的需求.

关键词:

具有抗菌活性,具有抗菌活性.红的微纳米球.银纳米颗粒银纳米粒子

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