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All Journal Jurnal Sains Materi Indonesia Aspirasi : Publikasi Hasil Pengabdian dan Kegiatan Masyarakat Jurnal Sains Materi Indonesia Konstanta : Jurnal Matematika dan Ilmu Pengelatuan Alam
Iwan Syahjoko Saputra
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Public Health

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BIOREDUCTION AND CHARACTERIZATION OF SILVER NANOPARTICLES FROM OIL PALM EMPTY FRUIT BUNCH Siti Suhartati; Iwan Syahjoko Saputra; Dwinna Rahmi; Yoki Yulizar; Sudirman Sudirman
Jurnal Sains Materi Indonesia Vol 21, No 4: JULY 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.21.4.6032

Abstract

BIOREDUCTION AND CHARACTERIZATION OF SILVER NANOPARTICLES FROM OIL PALM EMPTY FRUIT BUNCH (OPEFB). The synthesis of silver nanoparticles was successfully carried out by extracting oil palm empty fruit bunch. The precursor used was silver nitrate (AgNO3) with a concentration of 9x10-4 M and 5 wt% of the oil palm empty fruit bunch extract. OPEFB acted as a capping agent in the synthesis of silver nanoparticles. The bioreduction method Ag+ to Ag0 produced a silver nanoparticle colloid in brown color. The results of the UV-Vis spectrophotometer showed the silver nanoparticles colloids spectrum at a wavelength of 420 nm with an absorbance value of 0.5. FTIR shows the reduction and shift of absorption peak in the hydroxyl functional group (-OH) at wavenumbers of 3323 cm-1 and the presence of absorption peaks at 560 cm-1. While, XRD pattern showed the specific crystallinity peaks of silver nanoparticles at 2θ: 33.24°; 39.98°; 61.23°; dan 79.13° respectively with the face-centered cubic crystal structure (FCC) and crystallite size of 15 nm. PSA analysis showed two specific peaks with an average size distribution silver nanoparticles of 43.5 nm and a PDI value of 0.4. Analysis of TEM shows the average particle size of 20 nm with a spherical particle shape.
Nutmeg-Flavored Tea With Skin Health Advantaged Product To Empower Farmers In Hanau Berak Village, Pesawaran Regency Suryaneta Suryaneta; Indah Puspita Sari; Tikarahayu Putri; Iwan Syahjoko Saputra; Achmad Gus Fahmi
ASPIRASI : Publikasi Hasil Pengabdian dan Kegiatan Masyarakat Vol. 1 No. 6 (2023): November : ASPIRASI : Publikasi Hasil Pengabdian dan Kegiatan Masyarakat
Publisher : Asosiasi Periset Bahasa Sastra Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/aspirasi.v1i6.38

Abstract

: This article introduces a community service conducted by the PkM ITERA team in Hanau Berak Village, Pesawaran Regency, Lampung. Nutmeg, being a primary agricultural commodity in this region, reveals an underutilized surplus of nutmeg flesh, leading to organic waste accumulation. In response to the urgent need for minimizing organic waste and elevating the economic viability of nutmeg fruit flesh, this endeavor is driven by the realization that this waste represents an overlooked potential. Nutmeg flesh possesses intrinsic qualities, notably a rich concentration of antioxidants known for their role in promoting skin health, stabilizing cardiac rhythms, mitigating insomnia, alleviating angina, enhancing digestive processes, improving blood circulation, increasing appetite, and fortifying the immune system. The proposed solution involves the creation of nutmeg-flavored tea, intended to mitigate the issue of excess nutmeg fruit waste while simultaneously augmenting the economic worth of the produced merchandise. Thus, this initiative materializes as a strategy to optimize nutmeg fruit utilization, curtail waste generation, and amplify its market value. The Community Partnership Program administered by the ITERA team serves as a conduit for the enrichment of knowledge, insights, and competencies among local nutmeg farmers, empowering them to generate high-value commodities from an underexploited resource. The scope of activities encompasses the entire production process, extending to packaging design.
BIOSYNTHESIS AND CHARACTERIZATION OF GOLD NANOPARTICLES AND THEIR INTERACTION STUDY WITH METFORMIN Dian Anggraini; Siti Suhartati; Iwan Syahjoko Saputra; Sudirman
Jurnal Sains Materi Indonesia Vol. 21 No. 2 (2020): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

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Abstract

BIOSYNTHESIS AND CHARACTERIZATION OF GOLD NANOPARTICLES AND THEIR INTERACTION STUDY WITH METFORMIN. Synthesis of gold nanoparticles successfully carried using Imperata cylindrica L leaf extract. In this study, the approach used through green synthesis method is a reaction betwen of the HAuCl4 solution (concentration variation as 3; 5; 7 x 10-4 M) with Imperata cylindrica L leaf extract. Results of UV-Vis showed of gold nanoparticles has a maximum wavelength at 530 nm with absorbance value of 1.4. Results of FTIR shows a shift the absorption peak at wavenumber of 3392 cm-1 to 3404 cm-1. PSA and PZC showed the distribution of gold nanoparticles was 48.84 nm with a charge of 20.5 mV. Gold nanoparticles has a spherical shape and an average particle size of 20 nm which can be seen from the results of the characterization using TEM. XRD showed crystalize size average of gold nanoparticles as 20.47 nm. The interaction between of gold nanoparticles with metformin can be seen in the absorbance decrease of 0.38 at a wavelength of 531 nm and the results of PSA shows an average particle size of AuNPs@metformin is 122 nm. From the characterization data can be concluded the gold nanoparticles were successfully synthesized using natural bioreductors by utilizing secondary metabolites from Imperata cylindrica L leaf extract.
Sintesis Nanopartikel PbO-Ag Dengan Menggunakan Metode Sol-Gel Iwan Syahjoko Saputra; Suryaneta Suryaneta
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 1 No. 3 (2023): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v1i4.1652

Abstract

The synthesis of PbO-Ag nanoparticles was carried out using the sol-gel method using bioreduction from fig leaf extract (Ficus Carica L). PbO is a semi-conducting metal, so it is combined with Ag metal to make PbO a conducting metal. The reason Ag is used is because the stability of silver nanoparticles plays a very important role when being characterized and applied to a product. The nanoparticles formed were characterized by PSA, PZC, XRD, FTIR, UV-Vis, DRS and SEM. From the characteristic results, it was obtained that PbO-Ag could be formed using the sol-gel method using fig leaf bioreductor (Ficus Carica L).
Co-Authors Achmad Gus Fahmi Dian Anggraini Dwinna Rahmi Indah Puspita Sari Siti Suhartati Siti Suhartati Sudirman Sudirman Sudirman Suryaneta Tikarahayu Putri Yoki Yulizar