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All Journal Biology, Medicine, & Natural Product Chemistry
Shofia Jannatul Ma'rifah
Universitas Islam Malang
Biochemistry, Genetics & Molecular Biology Medicine & Pharmacology Public Health

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Antibacterial Innovation of Iron Nanoparticles from Pomegranate Peel Extract (Punica granatum L.): an In Vitro Study Shofia Jannatul Ma'rifah; Nur Azizah; Zahrotul Jamilah; Thoifatus Syarivah; Nabiilah Rifda Harmono Putri; Majida Ramadhan; Gatra Ervi Jayanti
Biology, Medicine, & Natural Product Chemistry Vol 15, No 1 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.151.245-252

Abstract

Iron nanoparticles (Fe-NPs) were synthesized from pomegranate peel extract using ethanol as a solvent. The antibacterial activity of the synthesized Fe-NPs against pathogenic bacteria (S. aureus and E. coli) was assessed using the well diffusion method. The morphology, structure, size, and atomic distribution on the surface of Fe-NPs were characterized using SEM-EDS, UV-Vis, and FTIR spectroscopy. Different pH conditions (5, 7, and 9) were investigated as experimental factors for Fe-NPs preparation. The results revealed mostly irregular spherical shapes with particle sizes ranging from 1 to 89 nm, with the smallest size observed at pH 9. UV-Vis spectra confirmed the formation of Fe-NPs, appearing in the UV region around 230-295 nm. FTIR spectra indicated the presence of polyphenolic compounds from the pomegranate peel extract, which facilitated Fe-NPs stabilization and acted as bioreductants. Upon reduction of Fe(III) to Fe(0), oxidation of O-H and C-O functional groups occurred. The diameters of inhibition zones against the tested bacteria were 16 mm at pH 5, 13 mm at pH 7, and 15 mm at pH 9, indicating strong antibacterial activity.
Co-Authors Gatra Ervi Jayanti Majida Ramadhan Nabiilah Rifda Harmono Putri Nur Azizah Thoifatus Syarivah Zahrotul Jamilah