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All Journal KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Newton-Maxwell Journal of Physics
Fadillah Ramadhani
Jurusan Fisika, Fakultas Teknik, Universitas Bangka Belitung
Astronomy Earth & Planetary Sciences Electrical & Electronics Engineering Mechanical Engineering Physics

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Green-Synthesis Of Silver Nanoparticles Based On Bioreductor Key Orange Extract As Antibacterial Fitri Afriani; Susanti Susanti; Fadillah Ramadhani; Muntaz Soraya; Evi.J Evi.J
KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Vol 7 No 1 (2022): KONSTAN (Jurnal Fisika dan Pendidikan Fisika)
Publisher : Universitas Islam Negeri (UIN) Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/konstan.v7i01.101

Abstract

Silver nanoparticles are nano-sized particles ranging from 1-100 nm which are commonly used as antifungal and antibacterial agents in various products. In this study, silver nanoparticles were synthesized from a natural bioreductant, namely key orange peel extract. The silver nanoparticle phase which was successfully synthesized and then XRD test was carried out was cubic in shape with the highest peak at 2θ : 38.1959˚; 44.4038˚; 64.5491˚ The lattice parameter of silver nanoparticles is a=b=c= 4.0861 . The resulting crystal structure of silver nanoparticles is cubic with a crystallite size of 39.84 nm, in addition to XRD test, XRF test was conducted to determine the main constituent components of silver nanoparticles, while the main component of synthesized silver nanoparticles was Ag of 97.66%. Antibacterial activity of silver nanoparticles was indicated by the formation of inhibition against the growth of Staphylococcus aureus bacteria with a clear zone formed around 12.091 mm. Therefore, the antibacterial inhibition formed from the silver nanoparticles synthesized in this study can be classified as a strong antibacterial property.
Sintesis dan Karakterisasi Hidrogel PVA/Alginat Mengandung Ekstrak Lada sebagai Pembalut Luka Antibakteri Fadillah Ramadhani; Lizia Miratsi; Zalva Humaeroh; Fitri Afriani
Newton-Maxwell Journal of Physics Vol. 2 No. 2: Oktober 2021
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (439.777 KB) | DOI: 10.33369/nmj.v2i2.17752

Abstract

Wound dressings act as wound protectors as well as drug delivery for wound healing. This article develops a PVA/alginate-based wound dressing material added with pepper extract to obtain its antibacterial properties. The sample preparation process consisted of several stages: the preparation of pepper extract by maceration method with ethanol solvent, preparation of PVA/Alginate hydrogel and addition of pepper extract, and testing. Antibacterial test using the paper disc method with the pathogen Staphyloccocus aureus showed that the extract had powerful antibacterial properties with an inhibition zone of about 22 m. Based on the FTIR analysis, it is known that the FTIR transmittance pattern of the PVA/alginate composite added with pepper is related to its constituent functional groups. The highest degree of swelling of the hydrogels prepared in this study was 188%.
Co-Authors Evi.J Evi.J Fitri Afriani Lizia Miratsi Muntaz Soraya Susanti Susanti Zalva Humaeroh