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Journal of Nanostructures، جلد ۱۲، شماره ۳، صفحات ۶۷۵-۶۸۵
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عنوان انگلیسی Evaluation of the Antibacterial Inhibitory Activity of Chitosan Nanoparticles Biosynthesized by Streptococcus thermophilus
چکیده انگلیسی مقاله The nanomaterials field has been promising in recent decades due to its prospective biological applications that may assist overcome many medical difficulties by regulating numerous illnesses. However, there are restrictions on how these materials might perform against microbes including bacteria and viruses. Therefore. This research aims to investigate the nano synthesis of chitosan nanoparticles (NPs) using Streptococcus thermophilus, evaluate their characteristics, and analyze their antimicrobial efficiency against pathogenic bacteria associated with diabetic foot, Aeromonas hydrophila and Citrobacter freundii. By adding precursors to Streptococcus thermophilus cell-free supernatant, chitosan nanoparticles were produced. The solution's hue shift showed the production of chitosan NPs. UV-Visible spectrophotometry was utilized to characterize Streptococcus thermophilus' production of chitosan NPs with an absorption peak at 280nm. SEM examination indicated spherical, homogeneous, 29-51nm particles. EDS tests of biogenic chitosan indicated 33.31 % carbon, 10.24 % nitrogen, 50.55 % oxygen, 5.34% phosphate, and 0.55% chloride. Biogenic chitosan NPs were measured using XRD at 20°-26°. Energy-dispersive X-ray spectroscopy was utilized to determine the size, shape (spherical), dispersal (homogenous), and elemental analysis of nanoparticles. Biogenic chitosan NPs inhibit Aeromonas hydrophila and Citrobacter freundii. Biogenic chitosan NPs at 100, 200, and 400 ug/ml inhibited both tested microorganisms. Biogenic chitosan NPs showed growing antibiofilm activity. DPPH lowers biogenic chitosan nanoparticle activity.
کلیدواژه‌های انگلیسی مقاله Antibacterial Activity, biofilm, Biogenic chitosan, Nanoparticles, Streptococcus thermophilus
نویسندگان مقاله Zahraa Hussein Ali |
Alameen Center for Advanced Research and Biotechnology, Imam Ali Holy Shrine, Najaf, Iraq

Mohammed Abd Ali Jabber Al-Saady |
AL Sader Teaching Hospital, Maysan Health Directorate, Ministry of Health, Maysan, Iraq

Nawfal H. Aldujaili |
Department of Biology, Faculty of Science, University of Kufa, Najaf, Iraq

Shaima Rabeea Banoon |
Department of Biology, College of Science, University of Misan, Maysan, Iraq

Aswan Abboodi |
Department of Biology, College of Science, University of Misan, Misan, Iraq

نشانی اینترنتی https://jns.kashanu.ac.ir/article_112791_44740a19362b403a8a0835e9cfefd681.pdf
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