Article Per Year (5 Year)
p-Index From 2021 - 2026
1.152
P-Index
This Author published in this journals
All Journal Jurnal Sains Materi Indonesia The Journal of Pure and Applied Chemistry Research Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Walisongo Journal of Chemistry Jurnal Jejaring Matematika dan Sains Jurnal Sains dan Edukasi Sains Journal of Chemistry Sciences and Education
Syahjoko Saputra, Iwan
Unknown Affiliation
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Environmental Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Other

Published : 9 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 9 Documents
Search

 1 
BIOSYNTHESIS AND CHARACTERIZATION OF GOLD NANOPARTICLES AND THEIR INTERACTION STUDY WITH METFORMIN Anggraini, Dian; Suhartati, Siti; Saputra, Iwan Syahjoko; Sudirman, Sudirman
Jurnal Sains Materi Indonesia Vol 21, No 2: JANUARY 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1021.174 KB) | DOI: 10.17146/jsmi.2020.21.2.5591

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 dan Kararkterisasi Modifikasi Mikropartikel Magnetit (Fe3O4) Dalam Pemanfaatan Karat dengan Ekstrak Daun Ilalang (Imperata Cylindrica L): Synthesis and Characterization of Modified Magnetite Microparticles (Fe3O4) in Rust Utilization with Leaf Extract of Grass (Imperata cylindrica L) Siti Zulaicha, Annisaa; Syahjoko Saputra, Iwan; Puspita Sari, Indah; Annas, Dicky
Jurnal Jejaring Matematika dan Sains Vol. 2 No. 2 (2020): Edisi Desember 2020
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2020.v2.i2.405

Abstract

The synthesis of magnetite (Fe3O4) microparticles has been successfully carried out using rust and leaf extract of grass (Imperata cylindrica L). The purpose of this research is the synthesis and characterization of Fe3O4 microparticles using the Green Synthesis method. The UV-Vis results showed that the absorption peak was at a wavelength of 273 nm with an absorbance value of 0.75. FTIR analysis shows the shift of the peak at wave number 3356 cm-1 to 3290 cm-1 and the appearance of a new peak at wave number 500 cm-1 which is characteristic of the Fe-O-Fe functional group and indicates the formation of Fe3O4 microparticles. XRD results showed six specific peaks, which were crystallinity of Fe3O4 microparticles at position 2 theta 30.40 °, 35.70 °, 43.30 °, 53.80 °, 57.40 °, and 63.00 °. PSA analysis showed that the mean particle size was > 100 nm, and the PZC results showed a zeta potential of 20 mV. SEM results showed the morphology of Fe3O4 microparticles with 1000x magnification, and EDS analysis results showed Fe and O's elemental composition.
Eco-Friendly Synthesis of Gold Nanoparticles through Gracilaria sp Seaweed Extract for Foam Height Stability in Liquid Hand Soap Formulations Syahjoko Saputra, Iwan; Hermadi Saputro, Anjar; Adliani, Nur; Rahmi, Dwinna; Sudirman, Sudirman; Nopiandi, Yogi
The Journal of Pure and Applied Chemistry Research Vol 10, No 3 (2021): Edition September-December 2021
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2021.010.03.599

Abstract

Gold nanoparticles (G-NPs) were successfully synthesized using Gracilaria sp seaweed extract. Visually, color changes from purple-blue to ruby red and then finally to pink. UV-Vis spectrophotometer showed the optimum condition of G-NPs at 531 nm wavelength with an absorbance value of 1.1. The fourier transform infrared (FTIR) spectroscopy shows the absorption peak of functional groups at the Gracilaria sp seaweed extract like hydroxyl group (-OH), aromatic (C=C), alkane (C-H), and amine (C-N) at the wavenumbers of 3356, 1613, 1456, and 1182 cm-1, respectively. The X-ray diffraction (XRD) shows the crystallinity peaks of G-NPs at 2θ: 38.3o, 44.1o, 64.8o, and 77.8o with miller indices of (111), (200), (220), and (311). The Particle size analyzer (PSA) shows the distribution and particle size average of G-NPs was 11.8 nm. Analysis of particle zeta charge (PZC) confirms the total charge of inter-particles was -24.7 mV. The transmission electron microscopy (TEM) images shows the G-NPs was spherical shape with a particle size was 20 nm. The hand soap@G-NPs have a pH of 6.0 and foam height stability of 4.1 cm for 10 min.
Sintesis dan Kararkterisasi Modifikasi Mikropartikel Magnetit (Fe3O4) Dalam Pemanfaatan Karat dengan Ekstrak Daun Ilalang (Imperata Cylindrica L): Synthesis and Characterization of Modified Magnetite Microparticles (Fe3O4) in Rust Utilization with Leaf Extract of Grass (Imperata cylindrica L) Siti Zulaicha, Annisaa; Syahjoko Saputra, Iwan; Puspita Sari, Indah; Annas, Dicky
Jurnal Jejaring Matematika dan Sains Vol. 2 No. 2 (2020): Edisi Desember 2020
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2020.v2.i2.405

Abstract

The synthesis of magnetite (Fe3O4) microparticles has been successfully carried out using rust and leaf extract of grass (Imperata cylindrica L). The purpose of this research is the synthesis and characterization of Fe3O4 microparticles using the Green Synthesis method. The UV-Vis results showed that the absorption peak was at a wavelength of 273 nm with an absorbance value of 0.75. FTIR analysis shows the shift of the peak at wave number 3356 cm-1 to 3290 cm-1 and the appearance of a new peak at wave number 500 cm-1 which is characteristic of the Fe-O-Fe functional group and indicates the formation of Fe3O4 microparticles. XRD results showed six specific peaks, which were crystallinity of Fe3O4 microparticles at position 2 theta 30.40 °, 35.70 °, 43.30 °, 53.80 °, 57.40 °, and 63.00 °. PSA analysis showed that the mean particle size was > 100 nm, and the PZC results showed a zeta potential of 20 mV. SEM results showed the morphology of Fe3O4 microparticles with 1000x magnification, and EDS analysis results showed Fe and O's elemental composition.
Utilization of Senduduk Fruit Extract (Melastoma malabathricum) for Natural Color in Lip Cream Zulaicha, Annisaa Siti; Munawaroh, Khoryfatul; Saputra, Iwan Syahjoko; Setiajaya, Arif
Walisongo Journal of Chemistry Vol 6, No 2 (2023): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v6i2.18427

Abstract

Decorative cosmetics function to beautify your appearance with a combination of colors such as blush, hair dye and lip color . A class of cosmetics that women always use to give a more attractive appearance are decorative cosmetics such as lips cream. The coloring ingredients added to lip cream preparations are chosen from an economic perspective, but the optimal level of color stability means that many manufacturers still use dangerous chemical dyes such as Rhodamine B in their products. This dye can cause irritation to the respiratory tract and is carcinogenic. Therefore, the aim of the research is to formulate a lip cream preparation with natural coloring agent from sendunia fruit extract that is safe, useful and of good quality through physical and stability tests. Extraction was carried out using the maceration method for 3x24 hours using 96% ethanol solvent. Senduduk fruit extract lip cream is formulated into 4. The base comparisons carried out were (carnauba wax: microcrystaline wax) F 0 (12.6; 10.6), F1 (9.6; 7.6), F2 (7.6; 9.6), and F4 (9 ;9), physical properties assessed from the organoleptic test, homogeneity test, spreadability test, adhesion, pH test. The results of the hedonic test can be concluded that F2 color is the best formulation interested.
Effect of Adding Basil Leaf Extract (Ocimum basilicum) on Reducing Ag+ Ions to Ag0 by Colorimetry: Pengaruh Penambahan Ekstrak Daun Kemangi (Ocimum basilicum) Terhadap Reduktor Ion Ag+ menjadi Ag0 secara Kolorimetri Ambarita, Petrus Alvin Peter Ambarita; Nurhayati, Veni Putri; Rani, Fella Anindya; Putri, Tia Azzahra; Khansa, Shefia Dhiya; Gultom, Rifka; Rorensya, Chika Ari Dinar; Saputra, Iwan Syahjoko
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 8 No. 2 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rbaet.2024.008.02.04

Abstract

Nanotechnology has become a significant focus of research in efforts to address various challenges across multiple fields, including the synthesis of metal nanoparticles using natural bioreductors. This study explores the use of basil leaves (Ocimum basilicum) as a natural bioreductor for the synthesis of silver nanoparticles (Ag). The extract from basil leaves is rich in flavonoids, which serve as reducing agents in the green synthesis process of silver nanoparticles. The research methods include the preparation of basil leaves, extraction of simplicia, phytochemical analysis, and testing the bioreduction of Ag+ ions. The results indicate that the addition of basil leaf extract effectively reduces Ag+ ions to Ag⁰, marked by a color change in the solution to yellow-green within 60 minutes. The uniqueness of this study lies in utilizing basil leaves as an environmentally friendly bioreductor in the synthesis of silver nanoparticles. These findings have broad potential applications in catalysis, sensing technologies, and cosmetics.
Pengaruh Metode Ekstraksi Maserasi, Sonikasi, dan Sokletasi Terhadap Nilai Rendemen Sampel Kulit Buah Naga (Hylocereus polyrhizus) Triyanti, Sinta Bella; Lestari, Fhora Putri; Fitriana, Puti Anisa Nur; Rostiana, Herlita Rahma; Silalahi, Devika Damayanti; Syalsabina, Tria Dara; Putri, Rahma Yenita; Saputra, Iwan Syahjoko
Jurnal Sains dan Edukasi Sains Vol. 8 No. 1 (2025): Jurnal Sains dan Edukasi Sains
Publisher : Faculty of Science and Mathematics, Universitas Kristen Satya Wacana, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/juses.v8i1p71-78

Abstract

Ekstraksi merupakan proses pemisahan senyawa aktif simplisia dengan menggunakan pelarut cair tertentu. Simplisia adalah bahan alami yang berasal dari alam dan belum mengalami proses pengolahan kecuali proses pengeringan. Proses pengeringan dilakukan untuk memperpanjang masa simpan dan mempermudah penggunaannya. Simplisia banyak digunakan sebagai bahan dasar ekstraksi. Ada beberapa metode dalam ekstraksi diantaranya adalah maserasi, sonikasi, dan sokletasi. Pada percobaan ekstraksi kulit buah naga, proses ekstraksi dimulai dengan menghancurkan kulit buah naga menjadi potongan kecil, kemudian direndam dalam pelarut untuk memisahkan senyawa senyawa yang diinginkan. Maserasi adalah proses merendam suatu simplisia dalam pelarut pada suhu kamar untuk mendapatkan ekstrak. Sonikasi adalah modifikasi dari metode maserasi yang menggunakan bantuan ultrasound (sinyal dengan frekuensi tinggi, 20 kHz), sedangkan sokletasi melibatkan pemanasan yang cukup pada suhu yang lebih tinggi. Pada kulit buah naga, senyawa senyawa yang dapat dihasilkan juga memiliki beberapa manfaat, diantaranya termasuk antioksidan yang tinggi dan khasiat anti - inflamasi. Dengan memanfaatkan teknik ekstraksi maserasi, sonikasi, dan sokletasi potensi senyawa senyawa bermanfaat dalam kulit buah naga dapat diekstraksi secara efisien untuk aplikasi yang beragam. Pada penelitian ini hasil nilai rendemen maserasi sebesar 16,29%; nilai rendemen sonikasi 3,74%; dan nilai rendemen sokletasi sebesar 29,54%. Adapun hasil uji fitokimia pada ekstrak kulit buah naga metode sokletasi terdapat senyawa metabolit dengan yaitu tanin.
Perbandingan Metode Ekstraksi Maserasi, Sokletasi, Dan Sonikasi Terhadap Nilai Rendemen Ekstrak Rimpang Kunyit (Curcuma Longa L.) Annisa Rahma Aryanti; Made Helen Susanti; Anjar Hermadi Saputro; Herayati; Indah Puspita Sari; Syahjoko Saputra, Iwan
Journal of Chemistry Sciences and Education Vol 2 No 01 (2025): Journal of Chemistry Sciences and Education
Publisher : PT. Pubsains Nur Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69606/jcse.v2i01.237

Abstract

This study aims to determine the comparison of maceration, soxhletation, and sonication extraction methods on the yield value of turmeric rhizome (Curcuma longa L.). Extraction was carried out using methanol and n-hexane solvents. The extraction process produces turmeric extract with different colors, textures, and aromas depending on the method used. The maceration, soxhletation, and sonication methods have different impacts on the yield of the extract, but the basic principle is the same in filtering active substances from the sample. The yield value obtained from the maceration method is 0.4996% soxhletation 0.0013% and sonication 0.0071%. The maceration method is proven to provide the highest extract yield compared to the soxhletation and sonication methods, which is 0.4996%.
Optimasi Ekstraksi Daun Pandan (Pandanus amaryllifolius) dengan Metode Maserasi, Ultrasonik, dan Sokletasi: Perbandingan Hasil dan Efisiensi Pebriyanti, Ine; Mentari, Corona; Saputra, Iwan Syahjoko; Sari, Indah Puspita; Herayati; Saputro, Anjar Hermadi
Journal of Chemistry Sciences and Education Vol 2 No 02 (2025): Journal of Chemistry Sciences and Education
Publisher : PT. Pubsains Nur Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69606/jcse.v2i02.315

Abstract

Pandan (Pandanus amaryllifolius) merupakan tanaman yang memiliki kandungan bioaktif yang dapat memberikan efek antibakteri terhadap Staphylococcus aureus dan Staphylococcus epidermis. Tujuan penelitian ini yaitu membandingkan efektivitas metode maserasi, ultrasonik, dan sokletasi dalam mengekstrak senyawa bioaktif. Penelitian dilakukan secara eksperimen, sampel diekstraksi dengan cara maserasi, sokletasi, dan ultrasonik selama 1 jam dengan menggunakan pelarut metanol. Hasil konsentrasi larutan stok ekstrak daun pandan wangi yang diperoleh dari metode maserasi sebesar 0.49%; metode sokletasi sebesar 3%, dan metode ultrasonik sebesar 3,90%. Daun pandan segar menghasilkan serbuk simplisia dengan rendemen 24,89%. Penelitian ini membandingkan efektivitas ekstraksi senyawa metabolit sekunder menggunakan metode maserasi, sokletasi, dan ultarsonik. Maserasi menghasilkan fraksi polar dominan dengan konsentrasi 0,49% (m/v), ultrasonik menghasilkan ekstrak 3,90% (m/v), dan sokletasi 3% (m/v). Warna hijau tua pekat pada ekstrak mengindikasikan keberadaan senyawa bioaktif seperti flavonoid dan klorofil. Semua metode terbukti efektif dalam mengekstraksi senyawa aktif dari daun pandan.
Co-Authors Ambarita, Petrus Alvin Peter Ambarita Anjar Hermadi Saputro Annas, Dicky Annisa Rahma Aryanti Dian Anggraini Dwinna Rahmi Fitriana, Puti Anisa Nur Gultom, Rifka Herayati, Herayati Indah Puspita Sari Indah Puspita Sari, Indah Puspita Khansa, Shefia Dhiya Khoryfatul Munawaroh Lestari, Fhora Putri Made Helen Susanti Mega Fatimah Rosana Mentari, Corona Nopiandi, Yogi Nur Adliani Nurhayati, Veni Putri Nurwijayanti Pebriyanti, Ine Puspita Sari, Indah Putri, Rahma Yenita Putri, Tia Azzahra Rani, Fella Anindya Rorensya, Chika Ari Dinar Rostiana, Herlita Rahma Setiajaya, Arif Silalahi, Devika Damayanti Siti Suhartati, Siti Siti Zulaicha, Annisaa Syalsabina, Tria Dara Triyanti, Sinta Bella Zulaicha, Annisaa Siti