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All Journal JFA (Jurnal Fisika dan Aplikasinya) Indonesian Journal of Science and Technology Spektra: Jurnal Fisika dan Aplikasinya Indonesian Journal of Chemistry PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Jurnal Material dan Energi Indonesia Jurnal Ilmu dan Inovasi Fisika Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan al Kimiya : Jurnal Ilmu Kimia dan Terapan
Risdiana Risdiana
Departemen Fisika Fakultas Matematika Dan Ilmu Pengetahuan Alam Universitas Padjadjaran
Aerospace Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Other

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Application of fermented product feed to growth performance of fish: A review Muhamad Dwi Cahya; Yuli Andriani; Kiki Haetami; Risdiana Risdiana
Depik Vol 11, No 3 (2022): DECEMBER 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (235.886 KB) | DOI: 10.13170/depik.11.3.26361

Abstract

Aquaculture activities cannot be separated from the availability of artificial feed, even 70% of the total production cost is spent on feed, so the availability of good feed, in terms of quality and quantity, is an effort to maintain the success of aquaculture activities. Feeds with high protein have relatively higher prices because some of their raw materials still rely on imports from other countries. The solution to this problem is to use alternative feed ingredients that have good nutritional content, are easy to obtain and do not compete with humans. Organic waste originating from food scraps and agricultural industry residues has considerable potential. However, it is necessary to have a fermentation process as an effort to improve the nutrition and quality of these materials. The purpose of this paper is to determine the extent of utilization of fermented organic waste as fish feed ingredients that can help improve fish growth performance.Keywords:Alternative feed ingredientsFermentationFish feedOrganic waste
Synthesis and Characterization of Water Hyacinth Porous Carbon for Lithium Sulfur Battery Cathode Composites Otong Nurhilal; Sahrul Hidayat; Risdiana .
JIIF (Jurnal Ilmu dan Inovasi Fisika) Vol 7, No 2 (2023)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jiif.v7i2.43356

Abstract

Water hyacinth as a weed plant is a type of biomass with a fast growth rate. This condition causes problems in the environment and has a negative impact on life, including health and economic problems. To provide added value to the utilization of water hyacinth, a synthesis and characterization of porous carbon from water hyacinth has been carried out which is used as a sulfur cathode matrix in lithium sulfur batteries. From the results of the N2 adsorption-desorption test, the surface area of porous carbon was 297.7 m2/g and the total pore volume was 0.332 cm3/g. The results of the composite test showed that the sulfur content in the composite for a ratio of 1:2.5 was 60.6 wt%. The cathode of a lithium sulfur battery has been made from a composite with a thickness 100 mm and a sulfur loading of 2.80 mg/cm2. The initial discharge capacity of the battery is 264 mAh/g with a coulomb efficiency of up to 70%. Battery discharge capacity of 175.5 mAh/g at 50th cycle.
Application of fermented product feed to growth performance of fish: A review Muhamad Dwi Cahya; Yuli Andriani; Kiki Haetami; Risdiana Risdiana
Depik Vol 11, No 3 (2022): DECEMBER 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.3.26361

Abstract

Aquaculture activities cannot be separated from the availability of artificial feed, even 70% of the total production cost is spent on feed, so the availability of good feed, in terms of quality and quantity, is an effort to maintain the success of aquaculture activities. Feeds with high protein have relatively higher prices because some of their raw materials still rely on imports from other countries. The solution to this problem is to use alternative feed ingredients that have good nutritional content, are easy to obtain and do not compete with humans. Organic waste originating from food scraps and agricultural industry residues has considerable potential. However, it is necessary to have a fermentation process as an effort to improve the nutrition and quality of these materials. The purpose of this paper is to determine the extent of utilization of fermented organic waste as fish feed ingredients that can help improve fish growth performance.Keywords:Alternative feed ingredientsFermentationFish feedOrganic waste
How to Make and Characterize Hydroxyapatite from Eggshell Using the Hydrothermal Method: Potential Insights for Drug Delivery System Ferli Septi Irwansyah; Alfi Ikhlasul Amal; Eko Prabowo Hadisantoso; Atiek Rostika Noviyanti; Diana Rakhmawaty Eddy; Risdiana Risdiana; Suryana Suryana; Shariffuddin Bin Md Zain
Indonesian Journal of Science and Technology Vol 8, No 3 (2023): (ONLINE FIRST) IJOST: December 2023
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v8i3.60825

Abstract

Hydroxyapatite (HA) has garnered significant attention as a versatile biomaterial with promising applications in drug delivery systems. This study aimed to synthesize and characterize HA derived from eggshells using the hydrothermal method and explore its potential insights for drug delivery systems. We delivered a step-by-step process to produce HA using a hydrothermal method, supported by several analyses, X-Ray Diffraction (XRD) to analyze the crystallinity structure, Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Particle Size Analyzer (PSA), and Brunauer-Emmett-Teller (BET). The stage is continued with a study on the potential of HA as a drug delivery system with UV-Visible spectrophotometer instrumentation. The results suggest that the characterized HA suits drug delivery systems due to its favorable properties. This study contributes to the understanding of utilizing hydroxyapatite from eggshells as a viable material for drug delivery systems, opening avenues for further research and development in this field.
Effect of Low Solid/Liquid Ratio on Hydrothermal Synthesis of Hydroxyapatite with Green Template from Banana Flower (Musa acuminata Cavendish) Ferli Septi Irwansyah; Alfi Ikhlasul Amal; Eko Prabowo Hadisantoso; Atiek Rostika Noviyanti; Diana Rakhmawaty Eddy; Azman Bin Ma'Amor; Risdiana Risdiana
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 10, No 1 (2023): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v10i1.25262

Abstract

Hydroxyapatite (HA) was successfully synthesized using the hydrothermal method. This study aimed to analyze the effect of a low solid/liquid ratio on the properties of HA crystals. HA synthesis was performed using chicken eggshells and the hydrothermal method at a temperature of 150°C. The solvent amount was kept constant, while the solid amount varied (half-reaction). The characteristics of HA were determined using XRD, FTIR, PSA, and SEM. The results showed that the purity and size of HA were influenced by a low solid/liquid ratio, while the crystallinity remained relatively unchanged, directly impacting the lattice parameter value. FTIR analysis revealed the absence of the O-H group in the sample with the low solid/liquid ratio. PSA results showed a smaller particle size of 0.995 µm for the sample with the low solid/liquid ratio. SEM results demonstrated a smaller particle size in the sample with a low solid/liquid ratio when observed at the same magnification
Analysis of glucomannan molecule in Porang (Ammorphophallus Muelleri Blume) flour using nuclear magnetic resonance Rizoputra, Ivan; Wahyudi, Sriati; Puspita, Niniek Fajar; Risdiana, Risdiana; Darminto, Darminto
Jurnal Fisika dan Aplikasinya Vol 20, No 3 (2024)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i3.21753

Abstract

The porang tuber (Ammorphophallus Muelleri Blume) is a bulb plant belonging to the Araceae family, which contains the polysaccharide substance of glucomannan. In this work, the porang flour has been purified from tubers by a centrifugation method. To study the content of compounds and types of molecules that make up glucomannan, characterization was carried out using 1H and 13C nuclear magnetic resonance (NMR). The analysis on chemical shift data from both NMR spectra can be concluded that glucomannan in porang is more dominantly constructed by glucose molecules rather than mannose. From these results, it is also known that the toxic compound Ca-oxalate which is part of the porang compound has been reduced during the centrifugation process.
Co-Authors Alfi Ikhlasul Amal Alfi Ikhlasul Amal Atiek Rostika Noviyanti ATIKAH ARDI Ayi Bahtiar Azhari Yusuf Azman Bin Ma'Amor BAYU PERMANA Darminto . Diana Rakhmawaty Eddy DIBA GRACE AULIA Diba Grace Auliya DIMAS SANDI Edward Simanjuntak Eko Prabowo Hadisantoso, Eko Prabowo Evan Mulyana Ferli Septi Irwansyah Fitrilawati Fitrilawati H Taniguchi Iman Rahayu Kiki Haetami Lusi Safriani MALA SAPUTRI Maria Oktaviani Mariah Kartawidjaja MAYKEL MANAWAN Muhamad Dwi Cahya MUHAMMAD ABDAN SYAKUR Nabillah Fa'diyyah Zahra Nadya Larasati K Norman Syakir NORMAN SYAKIR Norman Syakir, Norman Otong Nurhilal Puspita, Niniek Fajar Quadrant Barokatus Salam Quadrant Barokatus Salam RESSA MUSRIPAH NOVIANTI Rizoputra, Ivan Sahrul Hidayat Satria Auffa Shariffuddin Bin Md Zain Soni Setiadji SUCI WINARSIH Suryana Suryana Thoriq S. Rahman Togar Saragi, Togar Tuti Susilawati ULFA FAUZIAH VIRA FUJI ARINI Vira Fuji Arini Wahyudi, Sriati YATI MARYATI Yonatan R Purba Yuli Andriani