Study of antibacterial and photocatalytic properties of silver nanoparticles synthesized by Haplophyllum obtusifolium watery extract

Silver has long been known for its antibacterial properties. In fact, silver nanoparticles, due to the release of silver ions, have such properties against aerobic and anaerobic bacteria. The binding of these particles to the sulfur-containing proteins at the surface of the bacterial membrane allows them to enter and modify the morphology and respiratory chain of the bacterium, eventually affecting the apoptosis process leading to the death of the foreign agent .Today, the unique properties of nanoparticles such as surface to volume ratio and quantum effects have increased the importance and photocatalytic role of these compounds in areas such as the environment, wastewater treatment and renewable energy. In this study, the antibacterial performance of synthesized nanoparticles against two gram-negative bacterias (E.coli, P.aeruginosa) and two gram-positive bacterias ( S.aureus, S. epidermidis) was investigated by diffusion disc method. Antibacterial function was seen in all samples, but the study of districts of reticences howed a higher potential of nanoparticles in the removal of gram-positive bacteria. The photocatalytic ability of silver nanoparticles synthesized to remove industrial dye Methyl Orange, which is one of the most important elements of industrial wastewater, was performed using a spectrophotometer, which strongly confirms the photocatalytic nature of silver nanoparticles in methyl orange dye degradation in the visible region at ۴۶۴ nm.. The achievements and findings of nanobiotechnology in the fields of health, treatment and the environment promise a bright future in this new science.

کلیدواژه ها:

Antibiotics ، Apoptosis ، Antibiogram ، Methyl Orange ، Industrial Sewage