使用Cymbopogon citratus生物合成的银纳米颗粒的抗菌活性 针对来自重症监护室的抗药性细菌
Bianca Picinin Gusso1, Aline Rosa Almeida2, Michael Ramos Nunes1,3,4
1Multi-User Laboratory, Postgraduate Program in Environment and Health, Planalto Catarinense University, Lages 88509-900, SC, Brazil.
Pharmaceuticals (Basel, Switzerland)
|August 28, 2025
概括
使用草精油合成的绿色银纳米颗粒显示出强烈的抗菌活性, 这为医疗机构的感染控制提供了一种可持续的方法.
科学领域:
- 纳米技术
- 微生物学
- 绿色化学
背景情况:
- 多药耐药 (MDR) 细菌在重症监护室 (ICU) 中构成重大威胁.
- 新型抗菌策略对于对抗医疗相关感染至关重要.
研究的目的:
- 用草 (Cymbopogon citratus) 精油合成的银纳米粒子 (AgNPs) 在体外对抗MDR细菌的有效性进行评估.
- 描述合成的AgNP并评估它们的抗菌潜力.
主要方法:
- 使用气体染色体质谱法 (GC-MS) 提取和分析草精油.
- 通过生物还原合成银纳米颗粒 (AgNPs),并使用UV-Vis,DLS,zeta潜力,TEM和FTIR进行了表征.
- 对来自ICU环境的细菌分离物进行了抗菌活性测试.
主要成果:
- 草精油主要含有草A,草B和β-.
- 使用6毫米银合成的AgNP对抗抗生素耐药的Enterococcus spp具有更大的有效性. 与 3 mM 配方相比,该药物具有较强的抗氧化剂.
- FTIR分析证实了特定的功能组参与AgNP的稳定.
结论:
- 使用C. citratus精油合成的绿色AgNP对MDR细菌具有显著的抗菌活性.
- 这种方法为医疗保健机构的微生物控制提供了可持续和有前途的替代方案.
更多相关视频
11:19Synthesis of Multi-walled Carbon Nanotubes Modified with Silver Nanoparticles and Evaluation of Their Antibacterial Activities and Cytotoxic Properties
Published on: May 10, 2018
10.3K
06:42Author Spotlight: Exploring the Antibacterial Effects of Zinc Oxide Nanoparticles in Overcoming Antibiotic Resistance
Published on: September 27, 2024
2.0K
相关概念视频
01:28Antimicrobial Effectiveness
156
The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
156
01:23Antimicrobial Proteins
5.0K
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
5.0K