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All Journal KOVALEN: Jurnal Riset Kimia Wikrama Parahita : Jurnal Pengabdian Masyarakat Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia FLUIDA Indonesian Journal of Chemical Analysis (IJCA) Gorontalo Development Review J-Dinamika: Jurnal Pengabdian Kepada Masyarakat Jurnal Difusi Makara Journal of Science
Riniati
Jurusan Teknik Kimia, Politeknik Negeri Bandung
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences

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Journal : FLUIDA

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Optimasi Ekstraksi Kandungan Antosianin Total Bunga Telang Kering (Clitoria ternatea L.) Dengan Metode Microwave Assisted Extraction (MAE) Riniati, Riniati; Widiastuti, Endang; Ismail, Marisa Nursalsabila; Mochamad, Kevin
Fluida Vol. 17 No. 2 (2024): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v17i2.6049

Abstract

Butterfly pea flower (Clitoria ternatea L.) has been used in Indonesia as a natural dye in food and cosmetics due to its varying colors, which depend on the acidity (pH) of the environment. The vibrant colors are attributed to the presence of anthocyanin compounds. This study optimized the anthocyanin extraction process from dried butterfly pea flowers using the Microwave Assisted Extraction (MAE) method. The variables tested included different concentrations of hydrochloric acid (HCl) at 0.01%, 1%, 2.5%, 3%, 3.5%, and 3.75% in 96% ethanol, as well as extraction times of 3, 6, 9, 12, and 15 minutes. The optimum extraction conditions identified were a HCl concentration of 3.5% in 96% ethanol with an extraction duration of 12 minutes, which yielded an anthocyanin concentration of 116.89 ppm.The FTIR analysis confirmed the similarity in functional groups between butterfly pea flower extracts and blackberry fruit extracts, highlighting the potential of butterfly pea flowers as a reliable anthocyanin source
sebuah Karakterisasi dan Pembuatan Half Cell SOFC Berbasis Ni-YSz dengan Menggunakan NiO Lokal Jayanti, Retno Dwi; Riniati, Riniati; Marhani, Della Agustia; Febryanti, Chyntia Wahyuni; Troskialina, Lina
Fluida Vol. 18 No. 1 (2025): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v18i1.6023

Abstract

Indonesia has great potential to produce Nickel Oxide due to the abundance of Ni resources that can be used for the manufacture of SOFC anode components. Ni-YSZ which is a mixture of metal and ceramic is widely used SOFC anodes. Ni was selected because it exhibits high electrical conductivity and serves as an internal reforming catalyst. In this study, the characterization and manufacturing of Ni-YSZ-based half cells using domestic NiO were conducted. The stages of half cell fabrication begin with the mixing of solid and liquid materials and, the process of milling, sonication, degassing, tape casting, and sintering. The manufacture of half cells was carried out by adding an anti-foam concentration with a variation of 0.4; 0,6; and 0.8%. The optimal percentage composition was 0.4% anti-foam variation with a visual appearance that was not cracked, slightly curved and posed a pore size of 0.779 μm. The results of the domestic NiO characterization of imported NiO showed greater element percentage values and viscosity values, a slightly curved half cell visual appearance, good electrolyte density, and porosity values that were not in accordance with the range.
Co-Authors Ahya Sularasa Ahya Sularasa Alfiah, Diana Anisa, Sofiatun Anri Dwi Febrianto Ayu Utami Dwi Perwitasari Wiryaningtyas, Dwi Perwitasari Fajar Wahyu Prianto Fauzi Abdilah Febryanti, Chyntia Wahyuni Haryadi - Haryadi, Haryadi Huwaida, Melina Rahma Ismail, Marisa Nursalsabila Jannah, Devia Fataya Miftahul Jayanti, Retno Dwi Kardian Rinaldi Lili Indrawati Lina Setiawati Lintang Edi Wahyuni, Ninik Marhani, Della Agustia Marlina, Ari Mentik Hulupi Mochamad, Kevin Nancy Siti Djenar Nurcahyo, Nurcahyo Setyaningrum, Sinta Shalihatunnisa Shalihatunnisa Siti Fauziah Sofiatun Anisa Sudrajat Harris Abdulloh Troskialina, Lina Widiastuti, Endang Widiastuti, Endang Widyabudiningsih, Dewi Yusuf Sofyan Zulita, Nur Avia