利用紫花地丁叶提取物进行具有药用能力的银纳米颗粒(AgNPs)的植物合成。

Phytofabrication of Silver Nanoparticles (AgNPs) with Pharmaceutical Capabilities Using (Burm.) Boiss. Leaf Extract.

作者信息

Sharifi-Rad Majid, Pohl Pawel, Epifano Francesco

机构信息

Department of Range and Watershed Management, Faculty of Water and Soil, University of Zabol, Zabol 98613-35856, Iran.

Department of Analytical Chemistry and Chemical Metallurgy, Faculty of Chemistry, University of Science and Technology, Wyspianskiego 27, 50-370 Wroclaw, Poland.

出版信息

Nanomaterials (Basel). 2021 Apr 19;11(4):1045. doi: 10.3390/nano11041045.

Abstract

In the last years, the plant-mediated synthesis of nanoparticles has been extensively researched as an affordable and eco-friendly method. The current study confirms for the first time the capability of the (Burm.) Boiss. leaf extract for the synthesis of silver nanoparticles (AgNPs). The phytofabricated AgNPs were characterized by ultraviolet-visible spectroscopy (UV-Vis), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM), and zeta potential analysis. Moreover, the total phenolic and flavonoids contents, and the antioxidant, antibacterial, antifungal, and anti-inflammatory properties of the phytofabricated AgNPs and the leaf extract were assessed. The results showed that the produced AgNPs were crystalline in nature and spherical in shape with an average size of 36.5 ± 2.0 nm, and indicated a localized surface plasmon resonance (LSPR) peak at around 420 nm. The zeta potential value of -25.2 mV pointed that the AgNPs were stable. The phytofabricated AgNPs had lower total phenolic and flavonoids contents than those for the leaf extract. The abovementioned AgNPs showed a higher antioxidant activity as compared with the leaf extract. They also exhibited significant antibacterial activity against both Gram-positive (, , and ) and Gram-negative (, , and ) bacteria. In addition, appropriate antifungal effects with the minimum inhibitory concentration (MIC) values of 18.75, 37.5, and 75 µg mL against , , and , respectively, were noted for this new bionanomaterial. Finally, the phytofabricated AgNPs showed dose-dependent anti-inflammatory activity in the human red blood cell (RBC) membrane stabilization test, being higher than that for the leaf extract. The resulting phytofabricated AgNPs could be used as a promising antioxidant, antibacterial, antifungal, and anti-inflammatory agent in the treatments of many medical complications.

摘要

在过去几年中,植物介导的纳米颗粒合成作为一种经济实惠且环保的方法得到了广泛研究。当前研究首次证实了(Burm.)Boiss.叶提取物具有合成银纳米颗粒(AgNPs)的能力。通过紫外可见光谱(UV-Vis)、傅里叶变换红外光谱(FTIR)、X射线衍射(XRD)、透射电子显微镜(TEM)和zeta电位分析对植物合成的AgNPs进行了表征。此外,还评估了植物合成的AgNPs和叶提取物的总酚和黄酮含量以及抗氧化、抗菌、抗真菌和抗炎特性。结果表明,所制备的AgNPs本质上是晶体,形状为球形,平均尺寸为36.5±2.0 nm,并在420 nm左右显示出局域表面等离子体共振(LSPR)峰。-25.2 mV的zeta电位值表明AgNPs是稳定的。植物合成的AgNPs的总酚和黄酮含量低于叶提取物。上述AgNPs与叶提取物相比表现出更高的抗氧化活性。它们还对革兰氏阳性菌(、和)和革兰氏阴性菌(、和)均表现出显著的抗菌活性。此外,对于这种新型生物纳米材料,分别对、和观察到了适当的抗真菌作用,其最低抑菌浓度(MIC)值分别为18.75、37.5和75 μg/mL。最后,在人红细胞(RBC)膜稳定试验中,植物合成的AgNPs表现出剂量依赖性的抗炎活性,高于叶提取物。所得到的植物合成AgNPs可作为一种有前途的抗氧化、抗菌、抗真菌和抗炎剂用于治疗多种医学并发症。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/38b4/8074182/6025ac0d9f48/nanomaterials-11-01045-g001.jpg

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