Antibacterial Potential Of Bacillus subtilis Silver Nanoparticles Against Some Foodborne Pathogens.

[摘要] Silver nanoparticles (AgNPs) are effective antimicrobial agents. This study attends to the extracellularbiosynthesis of AgNPs by using Bacillus subtilis and its antibacterial activity against some foodborne bacteria.o Bacillus subtilis produced AgNPs within 72 hrs at 37 C in dark conditions while the production occurredthrough just minutes in the presence of solar irradiation. These nanoparticles were characterized by UV-Visspectrophotometer showing maximum absorbance at 434 nm. Disk agar diffusion method and micro-dilutionassay demonstrate that the produced nanoparticles are potent inhibitors of B. cereus, Staphylococcus aureus,Enterobacter cloacae, Escherichia coli and Pseudomonas aeruginosa. Thus, the obtained results reveal thatthese antimicrobial nanoparticles could be used in food industrials as food preservatives.

[学科分类] 工程和技术（综合）

[关键词] Bacillus subtilis;silver;nanoparticles;antimicrobial;foodborne bacteria.