Green synthesis of silver and gold nanoparticles in Callistemon viminalis extracts and their antimicrobial activities.

Autor: Khan S; Department of Chemistry, University of Swabi, Anbar, Khyber Pakhtunkhwa, 23561, Pakistan., Rauf A; Department of Chemistry, University of Swabi, Anbar, Khyber Pakhtunkhwa, 23561, Pakistan. mashaljcs@yahoo.com., Aljohani ASM; Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia., Al-Awthan YS; Department of Biology, Faculty of Science, University of Tabuk, 71491, Tabuk, Saudi Arabia., Ahmad Z; Department of Chemistry, University of Swabi, Anbar, Khyber Pakhtunkhwa, 23561, Pakistan., Bahattab OS; Department of Biology, Faculty of Science, University of Tabuk, 71491, Tabuk, Saudi Arabia., Khan S; Department, of Biotechnology, University of Swabi, Swabi, Anbar, KPK, Pakistan., Saadiq M; Department of Chemistry, Bacha Khan University, Charsadda, KP, Pakistan., Khan SA; Department of Chemistry, University of Swabi, Anbar, Khyber Pakhtunkhwa, 23561, Pakistan., Thiruvengadam R; Center for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, 600077, India. reklak4@gmail.com., Thiruvengadam M; Department of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul, 05029, Republic of Korea.
Jazyk: angličtina
Zdroj: Bioprocess and biosystems engineering [Bioprocess Biosyst Eng] 2024 Aug; Vol. 47 (8), pp. 1197-1211. Date of Electronic Publication: 2024 Mar 21.
DOI: 10.1007/s00449-024-02994-6
Abstrakt: In the current study, the bottlebrush [Callistemon viminalis (Sol. ex Gaertn.) G. Don] plant was selected for the green synthesis of silver (Ag) and gold (Au) nanoparticles and to evaluate its antibacterial and antifungal activities. Phytochemical screening of C. viminalis confirmed the presence of alkaloids, anthraquinones, saponins, tannins, betacyanins, phlobatanins, coumarins, terpenoids, steroids, glycosides, and proteins. To characterize the synthesized Ag and Au NPs, UV-Visible spectroscopy, FTIR spectroscopy for functional group identification, field emission scanning electron microscopy (FE-SEM) for particle size, and elemental analysis were performed using EDX. The UV-Visible absorption spectra of the green-synthesized Ag and Au nanoparticles were found to have a maximum absorption band at 420 nm for Ag NPs and 525 nm for Au NPs. FE-SEM analysis of the synthesized NPs revealed a circular shape with a size of 100 nm. Elemental analysis was performed for the synthesis of Ag and Au NPs, which confirmed the purity of the nanoparticles. The greenly synthesized Ag and Au NPs were also evaluated for their anti-bacterial and anti-fungal activities, which exhibited prominent inhibition activities against Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aeruginosa, Candida albicans, C. krusei, Aspergillus sp., and Trichoderma species. The highest zone of inhibition 15.5 ± 0.75 and 15 ± 0.85 mm was observed for Ag NPs against E. coli and P. aeruginosa. Similarly, Trichoderma sp. and Aspergillus sp. were inhibited by Ag NPs up to 13.5 ± 0.95 and 13 ± 0.70 mm. This work will open doors for the development of new antimicrobial agents using green chemistry.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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