Green Synthesis of Zinc Oxide Nanoparticles (ZnO-NPs) by Pseudomonas aeruginosa and Their Activity against Pathogenic Microbes and Common House Mosquito, Culex pipiens

Materials

Abdullah M. Abdo¹  Ahmed Mohamed Aly Khalil¹  Ahmed M. Eid¹  Amr Fouda¹  Ahmed M. Elsayed²  Othman M. Alzahrani³  Atef F. Ahmed³  Amal M. Soliman⁴  Nayer M. Fahmy⁵ 

[1] Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo P.O. Box 11884, Egypt;Department of Anesthesiology, Intensive Care and Pain Management, Faculty of Medicine, Ain Shams University, Cairo P.O. Box 1181, Egypt;Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;Department of Medical Microbiology and Immunology, Faculty of Medicine, Ain-Shams University, Cairo P.O. Box 1181, Egypt;Marine Microbiology Laboratory, National Institute of Oceanography and Fisheries, Cairo P.O. Box 101, Egypt;

关键词: green synthesis;    ZnO-NPs;    Pseudomonas aeruginosa;    antimicrobial activity;    larvicidal activity;   

DOI  :  10.3390/ma14226983

来源: DOAJ

【 摘 要 】

The synthesis of nanoparticles by green approaches is gaining unique importance due to its low cost, biocompatibility, high productivity, and purity, and being environmentally friendly. Herein, biomass filtrate of Pseudomonas aeruginosa isolated from mangrove rhizosphere sediment was used for the biosynthesis of zinc oxide nanoparticles (ZnO-NPs). The bacterial isolate was identified based on morphological, physiological, and 16S rRNA. The bio-fabricated ZnO-NPs were characterized using color change, UV-visible spectroscopy, FT-IR, TEM, and XRD analyses. In the current study, spherical and crystalline nature ZnO-NPs were successfully formed at a maximum SPR (surface plasmon resonance) of 380 nm. The bioactivities of fabricated ZnO-NPs including antibacterial, anti-candida, and larvicidal efficacy were investigated. Data analysis showed that these bioactivities were concentration-dependent. The green-synthesized ZnO-NPs exhibited high efficacy against pathogenic Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis), Gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa), and unicellular fungi (Candida albicans) with inhibition zones of (12.33 ± 0.9 and 29.3 ± 0.3 mm), (19.3 ± 0.3 and 11.7 ± 0.3 mm), and (22.3 ± 0.3 mm), respectively, at 200 ppm. The MIC value was detected as 50 ppm for E. coli, B. subtilis, and C. albicans, and 200 ppm for S. aureus and P. aeruginosa with zones of inhibition ranging between 11.7 ± 0.3–14.6 ± 0.6 mm. Moreover, the biosynthesized ZnO-NPs showed high mortality for Culex pipiens with percentages of 100 ± 0.0% at 200 ppm after 24 h as compared with zinc acetate (44.3 ± 3.3%) at the same concentration and the same time.

【 授权许可】

Unknown