الفعالية المضادة للميكروبات والفعالية المضادة للاكسدة وتشخيص مستخلصات الفضة النانوية المحضرة من بعض النباتات الطبيةلبعض النباتات الطبية المحضرة بطريقة النانو

Research on nanoparticles is very important because of their widespread applications in human life, such as in cancer research, food industry, and wastewater treatment. The aims of the current study were to synthesize silver nanoparticles using different plant extracts and to evaluate their antimicrobial and antioxidant activities. The biosynthesis of silver nanoparticles was confirmed by color changes and characterization techniques such as FTIR and UV?vis spectroscopy. The antioxidant properties were evaluated by DPPH radical-scavenging methods and the antimicrobial activities were determined using the well-diffusion method. The results confirmed the highest inhibition zone was found in Syzygium aromaticum-AgNPs against E. coli, S. aureus, and B. subtilis, with 19.0?2.64, 19?2.17, and 19?1.5 mm, respectively, followed by T. vulgaris-AgNPs with 18.0?2.7, 15.0?2.64, and 15.0?2.17mm, respectively. Artemisia judaica and Thymus vulga-ris-AgNPs presented antifungal activity against Candida albicans (28.0?2.5 and 25?1.5mm, respectively, compared to 20?2.5 and 13?1.2mm. The AgNPs of Cinnamomum verum exhibited the greatest antioxidant activity (92.0%), while the antioxidant activity was only 43.7%for C. verum extracts. The green synthesis of silver nanoparticles using plant extracts exhibited antimicrobial and antioxidant activities due to the different functional groups, which will lead to the use of AgNPs in different medical applications in the near future.