蒲公英花制备的 Ag 纳米颗粒与合成 Ag 纳米颗粒的特性比较，以及光催化、抗氧化、抗菌和α-葡萄糖苷酶抑制活性的测定。

Dandelion flower-fabricated Ag nanoparticles versus synthetic ones with characterization and determination of photocatalytic, antioxidant, antibacterial, and α-glucosidase inhibitory activities.

机构信息

Department of Horticulture, Faculty of Agriculture, Urmia University, Urmia, Iran.

Department of Horticultural Sciences Engineering, Faculty of Agriculture and Natural Resources, Imam Khomeini International University, Qazvin, Iran.

出版信息

Sci Rep. 2023 Sep 18;13(1):15444. doi: 10.1038/s41598-023-42756-0.

In the present work, Silver nanoparticles (AgNPs) were fabricated through the dandelion flower hydroalcoholic extract, and their properties were characterized by FTIR, XRD, UV visible, SEM, and EDX. The results demonstrated that the average diameter of the green fabricated AgNPs is 45-55 nm (G-AgNPs). The antioxidant, antimicrobial, antidiabetic, and photocatalytic properties of G-AgNPs were compared with two commercially available different diameter sizes (20 and 80-100 nm) of AgNPs (C-AgNPs1- and C-AgNPs2, respectively). The sample's capacity for antioxidants was evaluated by DPPH free radical scavenging method. The consequences showed that G-AgNPs have higher radical scavenging activity (47.8%) than C-AgNPs2 (39.49%) and C-AgNPs1 (33.91%). To investigate the photocatalytic property, methylene blue dye was used. The results displayed that G-AgNPs is an effective photo-catalyst compared to C-AgNPs2 and C-AgNPs1, which respectively have an inhibition potential of 75.22, 51.94, and 56.65%. Also, the antimicrobial capacity of nanoparticles was assayed against, the gram-negative Escherichia coli and gram-positive Staphylococcus aureus bacteria. The results indicated that G-AgNPs could effectively inhibit the growth of both bacteria, compared to C-AgNPs1 and C-AgNPs2. Finally, G-AgNPs exhibited a considerable α-glucosidase enzyme inhibitory effect (88.37%) in comparison with C-AgNPs1 (61.7%) and C-AgNPs2 (50.5%).

在本工作中，通过蒲公英花的水醇提取物制备了银纳米粒子（AgNPs），并通过 FTIR、XRD、UV 可见、SEM 和 EDX 对其性质进行了表征。结果表明，绿色制备的 AgNPs 的平均直径为 45-55nm（G-AgNPs）。G-AgNPs 的抗氧化、抗菌、抗糖尿病和光催化性能与两种市售不同直径尺寸（分别为 20nm 和 80-100nm）的 AgNPs（C-AgNPs1-和 C-AgNPs2）进行了比较。通过 DPPH 自由基清除法评估了样品的抗氧化能力。结果表明，G-AgNPs 的自由基清除活性（47.8%）高于 C-AgNPs2（39.49%）和 C-AgNPs1（33.91%）。为了研究光催化性能，使用了亚甲基蓝染料。结果表明，与 C-AgNPs2 和 C-AgNPs1 相比，G-AgNPs 是一种有效的光催化剂，它们的抑制潜力分别为 75.22%、51.94%和 56.65%。此外，还测定了纳米粒子对革兰氏阴性大肠杆菌和革兰氏阳性金黄色葡萄球菌的抗菌能力。结果表明，与 C-AgNPs1 和 C-AgNPs2 相比，G-AgNPs 能有效抑制两种细菌的生长。最后，与 C-AgNPs1（61.7%）和 C-AgNPs2（50.5%）相比，G-AgNPs 对α-葡萄糖苷酶的抑制作用相当显著（88.37%）。