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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

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

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 Â°, 35.70 Â°, 43.30 Â°, 53.80 Â°, 57.40 Â°, and 63.00 Â°. 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

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 2Î¸: 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

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.

Pelatihan dan Edukasi Pembuatan Masker Kecantikan di SMKN 7 Bandar Lampung Saputra, Iwan Syahjoko
TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Vol 1 No 2 (2021): TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Volume 1 Edisi 2
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LP2M), Institut Teknologi Sumatera, Lampung, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/teknokreatif.v1i2.601

Kosmetik merupakan produk yang dapat digunakan untuk memperindah dan mempercantik diri. Masker kecantikan merupakan salah satu produk kosmetik dan sangat digemari bagi kalangan wanita. Selain dapat digunakan sebagai masker kecantikan, produk kosmetik ini dapat menjadi produk unggulan dalam meningkatkan UMKM di Indonesia. Kegiatan Pengabdian Kepada Masyarakat (PkM) yang dilakukan oleh program studi Rekayasa Kosmetik, Institut Teknologi Sumatera ini bertujuan untuk memberikan pelatihan dan edukasi pembuatan masker kecantikan berbahan dasar alami bagi kalangan siswa-siswi SMKN 7 Bandar Lampung. Peserta yang mengikuti kegiatan PkM ini bejumlah 30 siswa. Hasil pre-test menunjukkan jumlah siswa yang mampu menjawab pertanyaan dengan score diatas 80 sebanyak 5 orang. Setelah dilakukan pelatihan dan edukasi, hasil post-test menunjukkan peningkatan pengetahuan para siswa menjadi 27 orang yang memiliki score > 80. Kegiatan PkM ini memberikan pengetahuan dan menambah wawasan bagi para siswa-siswi SMKN 7 Bandar Lampung dari mulai pembuatan masker kecantikan menggunakan bahan dasar alami sampai regulasi perizinan BPOM.

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

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.

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