Antibacterial and Anti-Inflammatory Properties of ZnO Nanoparticles Synthesized by a Green Method Using Sargassum Extracts

马尾藻 纳米颗粒 抗菌活性 核化学 扫描电子显微镜 傅里叶变换红外光谱 材料科学 超声 亮绿色 化学 纳米技术 化学工程 色谱法 有机化学 细菌 藻类 植物 复合材料 生物 遗传学 工程类
作者
J. Luis López‐Miranda,Gustavo A. Molina,Marlén Alexis González-Reyna,Beatriz Liliana España‐Sánchez,Rodrigo Esparza,Rodolfo Silva,Miriam Estévez
出处
期刊:International Journal of Molecular Sciences [MDPI AG]
卷期号:24 (2): 1474-1474 被引量:39
标识
DOI:10.3390/ijms24021474
摘要

The present work shows the synthesis of ZnO nanoparticles through a green method, using sargassum extracts, which provide the reducing and stabilizing compounds. The conditions of the medium in which the reaction was carried out was evaluated, that is, magnetic stirring, ultrasound assisted, and resting condition. UV-Vis, FTIR spectroscopy, and X-ray diffraction results confirmed the synthesis of ZnO with nanometric crystal size. The scanning electron microscopy analysis showed that the morphology and size of the particles depends on the synthesis condition used. It obtained particles between 20 and 200 nm in the sample without agitation, while the samples with stirring and ultrasound were 80 nm and 100 nm, respectively. ZnO nanoparticles showed antibacterial activity against Gram-positive S. aureus and Gram-negative P. aeruginosa. A quantitative analysis was performed by varying the concentration of ZnO nanoparticles. In all cases, the antibacterial activity against Gram-positives was greater than against Gram-negatives. Ultrasound-assisted ZnO nanoparticles showed the highest activity, around 99% and 80% for S. aureus and P. aeruginosa, respectively. Similar results were obtained in the study of the anti-inflammatory activity of ZnO nanoparticles; the ultrasound-assisted sample exhibited the highest percentage (93%), even above that shown by diclofenac, which was used as a reference. Therefore, the ZnO nanoparticles synthesized with sargassum extracts have properties that can be used safely and efficiently in the field of biomedicine.
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