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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences JURNAL KIMIA SAINS DAN APLIKASI Teknotan: Jurnal Industri Teknologi Pertanian Jurnal Ilmu Kimia Universitas Brawijaya Bulletin of Chemical Reaction Engineering & Catalysis Journal of Innovation and Applied Technology Jurnal Pembangunan dan Alam Lestari Natural B The Journal of Pure and Applied Chemistry Research Jurnal Penelitian Pendidikan IPA (JPPIPA) Indonesian Journal of Chemistry Indonesian Food Science and TechnologyJournal Media Akuakultur Makara Journal of Science Bulletin of Chemical Reaction Engineering & Catalysis
Siti Mariyah Ulfa
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Brawijaya University, Jl. Veteran, Malang 65145, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Engineering Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology Physics Other

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Sequential Condensation and Hydrodeoxygenation Reaction of Furfural-Acetone Adduct over Mix Catalysts Ni/SiO2 and Cu/SiO2 in Water Siti Mariyah Ulfa; Rizka Fauzia Ohorella; Caterina Widya Astutik
Indonesian Journal of Chemistry Vol 18, No 2 (2018)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (414.903 KB) | DOI: 10.22146/ijc.26736

Abstract

Sequential condensation and hydrodeoxygenation reaction were perform using autoclave batch reactor in the presence of water as a solvent. The condensation of furfural and acetone was performed using MgO catalyst followed by hydrodeoxygenation using mix catalyst Ni/SiO2 and Cu/SiO2. The catalyst was prepared by wet-impregnation method and analyzed by XRD, SEM-EDX as well as BET surface. Condensation of furfural and acetone in 1:2 mol ratio was carried out by reflux gave 4-(2-furyl)-3-buten-2-one and 1,5-bis-(2-furanyl)-1,4-pentadien-3-one. The condensation product was then subjected for hydrodeoxygenation using batch reactor, catalyzed by mixed Ni/SiO2 and Cu/SiO2 at 150 and 180 °C for 2 h. The product identified as alkane derivatives with the conversion at 38.83 and 50.35%, respectively. The selectivity of hydrocarbon is 61.39% at 150 °C and 16.55% at 180 °C. Increasing the reaction temperature to 200 °C did not give any products except the recovery of the precursor. It showed that higher temperature enhanced the catalyst activity but the selectivity is controlled by low reaction temperature.
Pelatihan Uji Fitokimia Senyawa Metabolit Sekunder Tanaman Secang (Caesalpinia sappan L.) Kepada Perkumpulan Pendidik Sains Kimia Indonesia (PPSKI) Siti Mariyah Ulfa; Elvina Dhiaul Iftitah; Moh. Farid Rahman
Journal of Innovation and Applied Technology Vol 8, No 1 (2022)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jiat.2022.008.01.8

Abstract

Kandungan senyawa aktif dalam tanaman dapat di analisis dengan metode uji fitokimia. Salah satu tanaman herbal yang banyak dikonsumsi adalah secang (Caesalpinia sappan). Secang biasa di simpan dalam bentuk sediaan teh herbal, diseduh dengan air panas dan diminum untuk mengurangi radang tenggorakan. Dalam rangka mengenalkan kegiatan riset sederhana di sekolah dilakukan pelatihan uji fitokimia metabolit sekunder tanaman lokal (dalam hal ini secang) kepada guru-guru kimia yang tergabung dalam Perkumpulan Pendidik Sains Kimia Indonesia (PPSKI). Metode yang dilakukan dengan pemberian materi secara daring menggunakan media zoom meeting, tutorial melalui video, diskusi, tanya jawab, dan pemberian tugas. Dalam pelatihan ini diberikan juga soal-soal pretes dan postes untuk mengukur kemampuan peserta sebelum dan sesudah pelatihan. Terdapat peningkatan pengetahuan peserta sebanyak 20% setelah pelatihan. Pelatihan uji fitokimia ini memberikan wawasn baru kepada para guru kimia untuk melakukan riset sederhana dengan bahan yang tersedia.
Effect of methyl substituent on the solubility of 1,4-benzoquinone derivatives in n-octanol/water system Siti Mariyah Ulfa; Fath Dwisari; Ade Cintyia Sally; Mohammad Farid Rahman
Jurnal Kimia Sains dan Aplikasi Vol 23, No 5 (2020): Volume 23 Issue 5 Year 2020
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2428.245 KB) | DOI: 10.14710/jksa.23.5.142-146

Abstract

The solubility of the compound is a crucial task for new drug design. Quinone is a promising candidate to develop as a new drug. In this research, the synthesis of 1,4-benzoquinone derivatives, that is, 2-(5-bromoamyl)-3,5-dimethyl-1,4-benzoquinone (2a) and 2-(5-bromoamyl)-5-methyl-1,4-benzoquinone (2b) were carried out by decarboxylation and insertion reaction of alkyl bromides. The product 2a and 2b are purified using SiO2 gel column chromatography and analyzed by UV-Visible, FT-IR, and NMR. The yield of 2a is 13.75%, and 2b is 4.04%. The solubility of 2a and 2b, expressed by log P, is measured in the n-octanol/water (3:7 (v/v)) system by the shake flask method. The log P of 2a and 2b are 2.99 and 1.36, respectively. It is showed that the log P of 2a is higher compared to 2b. The presence of two methyl substituents on the quinone ring of 2a supports the increase of hydrophobicity of the compound in the n-octanol/water system.
Facile synthesis of 5-Isopropyl-2,3-dimethylbenzene-1,4-diol by Friedel-Crafts and Determination of Partition Coefficient in n- Octanol/Water Siti Mariyah Ulfa; Alma Miranda; Fath Dwisari; Mohammad Farid Rahman
Jurnal Kimia Sains dan Aplikasi Vol 25, No 1 (2022): Volume 25 Issue 1 Year 2022
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.25.1.7-12

Abstract

The wide therapeutic effect of quinone-based drugs has received considerable interest for a long time. In this research, Friedel-Crafts performed a facile synthesis of quinone derivatives using the mixture of Brønsted acid. Reflux of 2,3-dimethylhydroquinone (1), isopropanol, glacial acetic acid, and H2SO4 for 15 minutes gave yellow oil product of 5-isopropyl-2,3-dimethylbenzene-1,4-diol (2) as a major product. Characterization using Nuclear Magnetic Resonance (NMR) revealed the methine proton splitting for isopropyl at δ 3.13 ppm, which has a cross-coupling with aromatic carbon at δ 119.6 ppm suggested the substitution of a proton on quinone ring with isopropyl group. Analysis Fourier Transform Infra-Red (FT-IR) showed the broad spectrum of –OH, the vibration of CH sp3, and isopropyl groups. The minor products identified as 5-isopropyl-2,3-dimethylcyclohexa-2,5-diene-1,4-dione (3), 5-isopropyl-2,3-dimethyl-1,4 phenylene diacetate (4), and 2,3-dimethylbenzene-5,6-isopropyl-1,4-diol (5) confirmed from 2D HETCOR and MS analysis. The partition coefficient (log P) of compound 2 showed a higher solubility by 1.9-fold compared to hydroquinone 1. It is suggested that an additional methyl group increased the partition into the organic phase.
Biological Activity and Solubility of 5-Methoxy-1,4-Benzoquinone Having Bromoheptyl and Bromodecyl Substituents in the n-Octanol/Water System Ulfa, Siti Mariyah; Dwisari, Fath; Pangesti, Laras; Rahman, Mohammad Farid
Makara Journal of Science Vol. 25, No. 1
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The biological activity and solubility of compounds are influenced by its chemical structure. These properties can be improved by substituting alkyl, alkoxy, and/or haloalkane in the parent skeleton. In this research, the synthesis of 3-(7-bromoheptyl)-2-methyl-5-methoxy-1,4-benzoquinone (3a) and 3-(10-bromodecyl)-2-methyl-5-methoxy-1,4-benzoquinone (3b) was achieved through the decarboxylation reaction. The solubility and biological activity of 3a and 3b were compared with that of thymoquinone (TQ), which acts as an anti-inflammatory agent. Compounds 3a and 3b were successfully synthesized and analyzed using Fourier Transform Infra-Red (FTIR) and Nuclear Magnetic Resonance (NMR). The FTIR spectrum showed the increasing intensity of C-H sp3 and the absorption of C-Br because of the presence of the bromoheptyl and bromodecyl substituents. 1H-NMR showed the prominent chemical shift of olefinic methylene at δ 1.29–3.40 ppm. The solubility test showed the differences in the partition coefficient (log P) of 3a and 3b in the n-octanol/water system. The log P values of 3a and 3b are higher than those of TQ, indicating that methoxy, bromoheptyl, and bromodecyl support the increase in solubility. Biological activity test using the in silico approach showed that 3a and 3b have a higher tendency to bind with the translocator protein (TSPO) macromolecule than the phosphatase and tensin homolog (PTEN) macromolecule. The binding interactions of TSPO-3a and TSPO-3b, similar to that of TSPO-TQ, showed that both synthesized compounds have comparable activity. The binding energy of TSPO-3a is lower than that of TSPO-3b, indicating that 3a has a higher activity for anti-inflammatory drug candidates than 3b.
Synthesis and Characterization of Cellulose Acetate and Nanocellulose Acetate from Sengon Agroindustrial Waste (Paraserianthes falcataria) Nur Ikhtiarini; Masruri MASRURI; Siti Mariyah Ulfa; Widodo Widodo
The Journal of Pure and Applied Chemistry Research Vol 11, No 3 (2022): Edition September-December 2022
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2022.011.03.644

Abstract

Synthesis and characterization of cellulose acetate and nanocellulose acetate have been carried out. Cellulose was isolated from sengon wood powder waste using 6% NaOH solution and bleached with NaOCl. The cellulose was hydrolyzed with 60% formic acid to obtain nanocellulose. Cellulose and nanocellulose were then modified with acetic anhydride. The synthesized products were characterized by FTIR to identify organic functional groups, powder XRD to measure crystallinity, and SEM to observe surface morphology. Solubility tests in several types of solvents were also performed. The degree of substitution (DS) of cellulose acetate and nanocellulose acetate was carried out based on Indonesia’s SNI 0444:2009 method. The DS calculation show that the cellulose acetate and nanocellulose have DS of 2.9 and 2.1, respectively.
Korelasi Distribusi Ukuran mikroplastik dan Parameter Kualitas Air di Hulu Sungai Brantas Luthfia Ayu Dhea; Andi Kurniawan; Siti Mariyah Ulfa; Karimah Karimah
Jurnal Penelitian Pendidikan IPA Vol 9 No 2 (2023): February
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i2.2777

Abstract

Microplastics are contaminants resulting from plastic fragmentation with a size <5 mm. The spread of microplastics threatens the imbalance of the environment and organisms in the waters. So it is necessary to know the abundance, size distribution, and correlation between microplastic abundance and water quality parameters. This study used a quantitative descriptive method with purposive sampling. The study parameters included total microplastic abundance, microplastic abundance based on size characteristics, type of microplastic polymer, water quality parameters, and correlation between microplastic abundance and water quality. Calculating the total abundance of microplastics obtained a value range of 3311.11 – 18111.11 particles/m3. The results of the microplastic size distribution got the highest abundance percentage value in the class with a size <50 µm, which was 84.39%. There were eight types of polymers identified, including Polyethylene (PE), Polyvinyl chloride (PVC), Polypropylene (PP), High-density polyethylene (HDPE), Low-density polyethylene (LDPE, Polyethylene terephthalate (PET), Polycarbonate (PC), and Nylon. Water quality measurements obtained temperature range of 17.37-26.63 °C, pH value range of 6.66-8.51, current velocity value range of 0.13-0.8 m/s, DO value range of 4, 32-6.103 ppm, BOD value range of 4.69-6.07 ppm and TSS value range 0.005-0.019 ppm. Correlation analysis using the Canonical Correlation Analysis (CCA) statistical method. The study showed that water quality parameters such as temperature, current velocity, and DO have a high score of 0.95, 0.83, and 0.8.
Study Direction to Oxidize a Local Pine Rosin with Potassium Permanganate Widia Edy Kuncoro; Moh. Farid Rahman; Masruri MASRURI, Ph.D; Siti Mariyah Ulfa
The Journal of Pure and Applied Chemistry Research Vol 12, No 1 (2023): Edition January-April 2023
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2023.012.01.3298

Abstract

Pine rosin acid or Gondorukem is a solid resin obtained from pine sap. It is yielded as residue from a high temperature distillation process. In industry, rosin acid is widely used and modified as raw material in paint, ink, adhesive, resin, thermoplastic, and thermosetting polymer. Modification process generally is undergone to generate rosin acid with specific properties and for certain purposes. This paper report, potassium permanganate oxidation reaction of pine rosin acid under acidic process at low temperature. Product identified as 13,14-seco-13-oxoabiet-7-ene-dioic acid (0.52%), 7,8-dihydroxy-abietic acid (6.62%), and 7-oxo-dehydroabietic acid (1.49%). The crude product was isolated as a pale to white solid. Under high temperature a yellowish product was resulted. In overall, the yield isolated in between 46.4% and 86.0%.
The Production of Green Diesel Rich Pentadecane (C15) from Catalytic Hydrodeoxygenation of Waste Cooking Oil using Ni/Al2O3-ZrO2 and Ni/SiO2-ZrO2 Momodou Salieu Sowe; Arda Rista Lestari; Eka Novitasari; Masruri Masruri; Siti Mariyah Ulfa
Bulletin of Chemical Reaction Engineering & Catalysis 2022: BCREC Volume 17 Issue 1 Year 2022 (March 2022)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.17.1.12700.135-145

Abstract

Hydrodeoxygenation (HDO) is applied in fuel processing technology to convert bio-oils to green diesel with metal-based catalysts. The major challenges to this process are feedstock, catalyst preparation, and the production of oxygen-free diesel fuel. In this study, we aimed to synthesize Ni catalysts supported on silica-zirconia and alumina-zirconia binary oxides and evaluated their catalytic activity for waste cooking oil (WCO) hydrodeoxygenation to green diesel. Ni/Al2O3-ZrO2 and Ni/SiO2-ZrO2 were synthesized by wet-impregnation and hydrodeoxygenation of WCO was done using a modified batch reactor. The catalysts were characterized using X-ray diffraction (XRD), X-ray fluorescence (XRF), and scanning electron microscopy - energy dispersive X-ray spectroscopy (SEM-EDS), and N2 isotherm adsorption-desorption analysis. Gas chromatography - mass spectrometry (GC-MS) analysis showed the formation of hydrocarbon framework n-C15 generated from the use of Ni/Al2O3-ZrO2 with the selectivity of 68.97% after a 2 h reaction. Prolonged reaction into 4 h, decreased the selectivity to 58.69%. Ni/SiO2-ZrO2 catalyst at 2 h showed selectivity of 55.39% to n-C15. Conversely, it was observed that the reaction for 4 h increased selectivity to 65.13%. Overall, Ni/Al2O3-ZrO2 and Ni/SiO2-ZrO2 catalysts produced oxygen-free green diesel range (n-C14-C18) enriched with n-C15 hydrocarbon. Reaction time influenced the selectivity to n-C15 hydrocarbon. Both catalysts showed promising hydrodeoxygenation activity via the hydrodecarboxylation pathway. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
Local Perception and Behavior in Domestic Waste Management and Water Quality of The Brantas River, Dinoyo Ward Anggayasti, Wresti L.; Al Zamzami, Ilham Misbakudin; Pramudia, Zulkisam; Dwi Susanti, Yogita Ayu; Moehammad, Khibar Syiar; Ulfa, Siti Mariyah; Efani, Anton; Koentjoro, Maharani Pertiwi; Amin, Abd Aziz; Yanuar, Adi Tiya; Salamah, Lutfi Ni’matus; Galisong, Ridwan Danuarta; Aulia, Lisa; Kurniawan, Andi
Jurnal Pembangunan dan Alam Lestari Vol. 15 No. 2 (2024): Jurnal Pembangunan dan Alam Lestari
Publisher : Postgraduate School of Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpal.2024.015.02.04

Abstract

Waste management by society not only reflects individual responsibility but also plays a crucial role in environmental sustainability and community welfare. This research aimed to understand society’s perception and behavior regarding domestic waste and its surrounding waters. Understanding societal behavior is the key to sustainable environmental management. Direct inquiry was conducted to the sample population of 25 respondents who represented various age, education, and cultural groups in the densely populated residential area surrounding the Brantas River in Dinoyo Ward. Field observations were done to take water quality parameters and monitor the residents’ behavior regarding waste management. The results indicated that 76% of respondents know the impact of river pollution, although most did not contribute actively to reducing their domestic waste volume. About 44% of respondents never saw anyone littering the river, which may be due to the regular waste pick-up system. This was supported by water quality parameters that did not demonstrate any sign of pollution, although high turbidity was indicated. Comprehension of the results of this study is hoped to inspire the ideas of solid intervention plans to increase awareness and decrease the negative impact of domestic waste on the Brantas River in Dinoyo Ward. Keywords: society perception and behavior, domestic waste management, aquatic environment, Brantas River
Co-Authors A.A. Ketut Agung Cahyawan W Adam Mahfud Ade Cintyia Sally Al zamzami, Ilham Misbakudin Alma Miranda Amaniyah, Amaniyah Amin, Abd Aziz Amini, Helda Wika Andi Kurniawan Andi Kurniawan Anggayasti, Wresti L. Anjani, Ryzki Martha Arda Rista Lestari Caterina Widya Astutik Chairulita Putri Kusumaningsih Dinia Rizqi Dwijayanti Dita Prihartini Dwi Susanti, Yogita Ayu Edi Priyo Utomo Edi Priyo Utomo Edi Priyo Utomo Efani, Anton Eka Novitasari Elvina Dhiaul Iftitah Elvina Dhiaul Iftitah Elvina Dhiaul Iftitah Esya, Firdausy Amalina Fadlilah, Lilik Nur Fatma, Aliya Galisong, Ridwan Danuarta Grahadi, Rahmat Gunawan, Firza Rajasa Hapsari, Febriyana Rizky Helda Wika Amini Hermanto, Feri Eko Hidayatul Mustafidah Hideki Okamoto Hideki Okamoto Iftitah, Elvina Dhiaul Indah Nur Pramesti Inra Sari Kamila, Fairuz Sarah Karimah Karimah Kyosuke Satake Kyosuke Satake Lisa Aulia, Lisa Listianingsih, Lia Lukman Hakim Lukman Hakim Lutfi Ni’matus Salamah Luthfia Ayu Dhea Maharani Pertiwi Koentjoro Mahfuzh Huda Masruri Masruri Masruri Masruri Masruri Moehammad, Khibar Syiar Moh. Farid Rahman Mohammad Elham Firdaus Mohammad Farid Rahman Mohammad Farid Rahman Momodou Salieu Sowe Momodou Salieu Sowe Nashi Widodo Nisa', Khibrun Nur Ikhtiarini Nuraini Uswatun Chasana Pangesti, Laras Pramudia, Zulkisam Pratama, Safreno Panggih Pratiwi, Rahmania Tulus Setya Puspitasari, Rizka Dwitya Rachmat Triandi Tjahjanto Rizka Fauzia Ohorella Rizqi Alima Fabri, Ahmad Rosyadah, Nuraini Safitri, Anna Salamah, Lutfi Ni’matus Suratmo, Suratmo SUTRISNO Sutrisno, Sutrisno Utomo, Edi Priyo Wardani, Eris Agustin Warsito Warsito Warsito Warsito Widia Edy Kuncoro Widodo Widodo Widyananda, Muhammad Hermawan Yanuar, Adi Tiya Yosua Yosua Yulistian, Dhoni Prielananta Yusnawan, Eriyanto Yusuf Hendrawan Zahara, Izaz Aqeiluz