期刊
JOURNAL OF RENEWABLE MATERIALS
卷 10, 期 12, 页码 3093-3105出版社
TECH SCIENCE PRESS
DOI: 10.32604/jrm.2022.019335
关键词
Custard apple; chitosan; Ag nanoparticles; Chi-Ag nanoparticles; antibacterial
资金
- Department of Science and Technology (DST-FIST), India [DST-FIST/120/2012]
- Taif University TURSP Program [TURSP-2020/53]
- Royal Academy of Engineering [IAPP18-19\295]
- UKIERI [DST/INT/UK/P-164/2017]
The study fabricated silver nanoparticles and chitosan-coated silver nanoparticles using the aqueous leaf extract of the custard apple plant. Characterization through FTIR and UV/Visible spectral analysis confirmed the presence of nanoparticles. FESEM and EDS analysis demonstrated the shape and structure of the nanoparticles, which also showed strong antibacterial activity against various bacterial pathogens.
Custard apple is a dry land fruit. Its leaves exhibit different pharmacological activities. In the present study, both silver (Ag) nanoparticles and chitosan-coated Ag (Chi-Ag) nanoparticles were fabricated using the aqueous leaf extract of the custard apple plant. During preliminary phytochemical analysis, various types of phytocompounds were found in the aqueous leaf extract of the same plant. Next, both nanoparticles were physiochemically characterized. FTIR analysis exhibited the fingerprint vibrational peaks of active bioactive compounds in plant extract, Ag nanoparticles, and Chi-Ag nanoparticles. UV/Visible spectral analysis revealed the highest absorbance peak at 419 nm, indicating the presence of Ag nanoparticles. oanalysis presented the face-centered cubic (FCC) structure of both prepared nanomaterials. Further, the average crystalline size of both Ag nanoparticles and Chi-Ag nanoparticles was calculated to be 23 and 74 nm, respectively. FESEM analysis showed the spherical and cubical shapes of Ag nanoparticles and Chi-Ag nanoparticles, respectively. EDS analysis indicated a peak around 3.29 keV, conforming to the binding energies of Ag ions. The biogenic nanomaterial also showed strong antibacterial activity against all tested bacterial pathogens.
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