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All Journal Analit: Analytical And Environmental Chemistry
Poedji Loekitowati Hariani
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Ogan Ilir, South Sumatra, 30662 Indonesia

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GREEN SYNTHESIS OF FE3O4 NANOMAGNETICS WITH MATOA LEAF EXTRACT (Pometia pinnata) AND ANTI-BACTERIAL ACTIVITY TEST AGAINST Staphylococcus Aureus AND Escherichia Coli Sri Hartika; Poedji Loekitowati Hariani; Hermansyah Hermansyah
Analit : Analytical and Environmental Chemistry Vol. 9, No. 01 April (2024) Analit : Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/analit.v9i01.159

Abstract

The aim of this research is to synthesize nanomagnetic Fe3O4 using matoa (Pometia Pinnata) leaf extract and test its antibacterial properties against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). The resulting nanomagnets were characterized using a Vibrating Sample Magnetometer (VSM) to determine magnetic properties, phase type, and crystal size using X-ray diffraction (XRD), morphology, and element composition using Scanning Electron Dispersive X-ray Spectroscopy (SEM-EDX) and functional group using Fourier Transform Infra Red (FTIR). Furthermore, the Fe3O4 obtained was tested for antibacterial activity against Gram-Positive and Gram-negative bacteria, namely S. aureus and E. coli. Characterization results show that the average crystal size of Fe3O4 is 12.07 nm and has magnetic properties of 68.01 emu/g, morphology shows that it forms aggregates of unequal sizes. FTIR characterization results show the presence of -OH, -CH, C=C, H-C-H, C-O, and Fe-O groups. The results of the anti-bacterial Fe3O4 test were able to inhibit S. aureus and E. coli bacteria at a concentration of 5000 ppm with an inhibitory zone diameter of 11,0 mm and 10,5 mm respectively. These results show that the nanomagnetic compound Fe3O4 has antibacterial activity.  
GREEN SYNTHESIS NANOMAGNETIC MnFe2O4 USING BREADFRUIT LEAF EXTRACT (Artocarpus altilis) AND ANTI-BACTERIAL ACTIVITY TEST AGAINST E.Coli AND S. Aureus Bella Safitri; Poedji Loekitowati Hariani; Heni Yohandini Kusumawati
Analit : Analytical and Environmental Chemistry Vol. 9, No. 01 April (2024) Analit : Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/analit.v9i01.177

Abstract

In this research, breadfruit (Artocarpus Altilis) leaf extract has been used to synthesize nanomagnetic MnFe2O4. The resulting nanomagnetic characterization uses a Vibrating Sample Magnetometer (VSM) to determine magnetic properties, phase type and crystal size using analytical X-Ray Diffraction (XRD), morphology and element composition using Scanning Electron Dispersive X-ray Spectroscopy (SEM-EDX) and functional groups using Fourier Transform Infra Red (FTIR). MnFe2O4 obtained was tested for antibacterial activity against the gram-positive bacteria E. Coli and S.aureus. The result of the VSM characterization has magnetic property of 47.76 emu/g, the nanomagnetic XRD characterization was successfully synthesized with a peak appearing at an angle 2θ= 30.02 °, 35.28 °, 44.53 °, 56.65 °, dan 62.25 °, which corresponds to the crystal plane (220), (311), (400), (511) and (440)   showed an average crystal size of 25.85 nm, SEM results with various magnifications showed the formation of aggregates or chunks of unequal size, as well as the presence of Mn-O and Fe-O groups in FTIR analysis. This research showed that the nanomagnetic compound MnFe2O4 obtained from green synthesis has antibacterial properties against gram-positive bacteria E. Coli and S. aureus with a Minimum Inhibitory Capability (MIC) value of 2000 ppm. These results indicated that nanomagnetic compounds using the green synthesis method have the potential to be applied to gram-positive bacteria E.Coli and S.aureus.  
Co-Authors Bella Safitri Heni Yohandini Kusumawati Hermansyah Hermansyah Sri Hartika