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All Journal BERKALA SAINSTEK The Journal of Pure and Applied Chemistry Research Chemistry Indonesian Journal of Chemical Research Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Indonesian Journal of Chemical Analysis (IJCA) Barometer Jurnal Pengendalian Pencemaran Lingkungan (JPPL) REACTOR : Journal of Research On Chemistry And Engineering Sainteks: Jurnal Sain dan Teknik Journal of The Indonesian Society of Integrated Chemistry
Perdani, Meka Saima
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, The University Of Bengkulu, 38371A
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics

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Garcinia Mangostana Peel Extract as Sustainable Fuel Source on Ceria Synthesis under Hydrothermal Condition SALPRIMA YUDHA S; Morina Adfa; Aswin Falahudin; Deni Agus Triawan; Liana Wahyuni; Meka Saima Perdani
The Journal of Pure and Applied Chemistry Research Vol 8, No 3 (2019): Edition September-December 2019
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2019.008.03.496

Abstract

Cerium (IV) oxide or ceria (CeO2) was fabricated by heating an aqueous extract of Garcinia mangostana and cerium (III) nitrate in hydrothermal autoclave reactor at 200 °C for 3 hours, followed by calcination at 600 °C for 5 hours. The powder X-ray diffraction (XRD) pattern of the precipitate from cerium(III) nitrate under hydrothermal reaction conditions shows no clear XRD peaks, indicating its amorphous nature. In contrast, the products from the calcinated samples exhibit XRD peaks, which correspond to cubic fluorite structure with an average crystal size of 7.55 nm. The elemental mapping using the energy-dispersive X-ray (EDX) analysis reveals the main elements present were cerium and oxygen, with minor impurities in low amounts. The presence of Garcinia mangostana extract is predicted to be the key component and fuel source to obtain CeO2 particles with narrow crystal size.
Melastoma malabathricum Fruit Extract-Mediated Synthesis of Silver Nanoparticles with Sensing Ability for High Concentrations of Mercury (II) Nitrate SALPRIMA YUDHA S; Aswin Falahudin; Meka Saima Perdani; Irfan Gustian; Saiqa Ikram
The Journal of Pure and Applied Chemistry Research Vol 6, No 3 (2017): Edition of September - December 2017
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (862.134 KB) | DOI: 10.21776/ub.jpacr.2017.006.03.353

Abstract

A strategic approach was developed to synthesize silver nanoparticles from AgNO3 using Melastoma malabathricum seed extract. The reaction of silver ions with the organic compounds in the seed extract proceeded smoothly at room temperature without any additional capping agent. The appearance of an absorption peak around 427 nm provided evidence for the presence of silver nanoparticles in the reaction mixture. A diluted solution of the silver nanoparticles was treated with various concentrations of mercury (II) nitrate solutions and the resulting reaction was monitored using UV-Vis spectrophotometry
BIODELIGNIFICATION OF AGRO-INDUSTRIAL WASTE AS THE SUBSTRATE TO PRODUCE LACCASE ENZYME FROM TRAMETES VERSICOLOR Perdani, Meka Saima; Malisi, Sibro; Putri, Dwini Normayulisa; Margaretha, Grace; Hermansyah, Heri
BAROMETER Vol 9 No 1 (2024): Barometer
Publisher : Fakultas Teknik, Universitas Singaperbangsa Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35261/barometer.v9i1.11018

Abstract

Agro-industrial waste in Indonesia is a significant problem for the environment. Optimization of agro-industrial waste utilization is an exciting thing to be researched further. This study aims to utilize agro-industrial waste to optimize laccase enzyme production. The agro-industrial waste used is in the form of bagasse, rice straw, and corn stalks. The waste is used as biomass and treated to extract cellulose through bio-delignification. Cellulose serves as a substrate substance in the production of laccase enzymes. Laccase enzymes can be applied as a biocatalyst in the environmental, pharmaceutical, and chemical industries. Cellulose from agroindustry waste was synthesized by heat treatment using steam explosion with the operation conditions 200°C and 10 bar for 10 minutes. The production of laccase enzymes was done using the green technology submerged fermentation method for 32 hours at 25°C. The optimal result in producing laccase enzyme is using substrate from corn stalks and adding nutrients with an activity value of 25.46 U/mL. The reaction kinetics of laccase enzyme and commercial enzyme against 0.1 M substrate were modelled using the Euler method, and the k value was 2x10-4 min-1 (crude laccase) and 1.9x10-2 min-1 (commercial laccase).
Pembuatan Hidrogel Berbasis Carboxymethyl Cellulose (CMC) dan Pektin sebagai Adsorben Logam Cu dengan Metode Freeze-Thaw Dewi, Nurazizah Melani; Maelan, Nabilla Maharani; Andini, Sri; Perdani, Meka Saima; Wahyuningtyas, Aulia
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 6 No. 2 (2024): JPPL, September 2024
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v6i2.2412

Abstract

Pencemaran air merupakan salah satu masalah global yang serius disebabkan oleh meningkatnya industrialisasi dan urbanisasi. Logam berat Cu menjadi salah satu senyawa berbahaya penyebab pencemaran air karena memiliki efek racun bagi manusia sehingga dapat mengakibatkan keterbelakangan mental, anemia, hipertensi, dan lain-lain. Penyisihan logam Cu dalam air dapat dilakukan menggunakan adsorben hidrogel berbasis CMC dan Pektin. Hidrogel merupakan komposit polimer hidrofilik dengan jaringan tiga dimensi (3D) yang terdefinisi dengan baik secara fisik dan memiliki gugus fungsi yang responsif secara kimia, yang memungkinkan hidrogel dengan mudah menangkap ion logam tanpa larut. Hidrogel yang disintesis melalui metode Freeze-Thaw memiliki karakteristik elastis yang lebih besar. Sifat adsorpsi diselidiki oleh dua model isoterm dan lima model kinetik. Analisis FTIR membuktikan adanya gugus –OH terdeteksi bebas akibat dari interaksi antara CMC dan pektin, gugus COOH yang mempunyai kemampuan paling tinggi dalam mengikat logam, serta gugus lainnya yaitu C=O, C-O, dan C-O-C. Analisis BET menunjukkan bahwa hidrogel memiliki luas permukaan 1,685 m²/g dan tergolong pada grafik isoterm tipe 1 mengacu pada dominasi mikropori pada suatu bahan atau bahan dengan kandungan mesopori yang dekat dengan mikropori. Kondisi optimum dalam proses adsorpsi yaitu pada konsentrasi 223 ppm, menggunakan model isoterm Langmuir dengan efisiensi adsorpsi sebesar 20,84%. Kapasitas adsorpsi paling tinggi pada konsentrasi 74 ppm yang terjadi di menit 120, menggunakan model kinetika Pseudo Orde 2 dengan efisiensi penyerapan sebesar 85,07 %.
Synthesis Of CMC Pectin Hydrogel (1:2) Using the Freeze-Thaw Method and Its Benefit as An Adsorbent Andini, Sri; Maelan, Nabilla Maharani; Dewi, Nurazizah Melani; Perdani, Meka Saima; Wahyuningtyas, Aulia
Journal of The Indonesian Society of Integrated Chemistry Vol. 16 No. 1 (2024): Journal of The Indonesian Society of Integrated Chemistry
Publisher : Pendidikan Kimia FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jisic.v16i1.34375

Abstract

Research has been conducted on the manufacture of hydrogels from CMC and Pectin (1:2), which can be applied as an adsorbent. The Citarum River is included in the category of the most polluted river in the world, because it contains chemicals that can reduce water quality. One of the pollutants is the Cu2+ metal, precisely at the entrance point of the Citarum river which exceeds the threshold. Cu2+ metal is not biodegradable and can accumulate in the human body, which causes severe health problemss. Metal Cu2+ can cause toxic effects on fish body tissues that can induce the production of Reactive Oxygen Species (ROS). CMC and pectin are organic materials that are used as hydrogels to absorb Cu2+ metal. Hydrogel CMC/Pectin is analyzed using FTIR by having groups O-H, C=O, C-H, OH bending, COOH streatching vibration and C-O-C. The result from BET is that the hydrogel has a surface area of 3.706 m²/g and is classified as a type 1 isotherm graph, and has small pores. The optimum condition of the adsorption process occurs at a concentration of 260 ppm, using the Langmuir isotherm model and has an adsorption capacity of 19.76 mg/g with an absorption efficiency of 68.60%.).
Penentuan Formulasi Terbaik Pembuatan Sampo Kendaraan Berbahan Dasar Sisa Produk Sampo di Industri Sampo Fauzi, Muhammad Rezal Alfian; Hasannah, Cintiya Septa; Perdani, Meka Saima; Prajati, Gita
REACTOR: Journal of Research on Chemistry and Engineering Vol 5, No 1 (2024): Published in June 2024
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v5i1.122

Abstract

This research aims to process remaining shampoo products originating from the sampo industry into vehicle shampoo so that it has sales value and also has good quality. Determining the formulation for making this vehicle shampoo uses the trial and error method. After that, the variation data obtained will be tested through a pH test, density test, viscosity test, foam power test and corrosivity test. The results obtained are that the remaining variation data for the 25 mL shampoo product is the most optimal data because it meets the requirements for pH, density, viscosity and foaming test results. The results obtained from the variation data to make the best formulation were 47% remaining shampoo, 8% LAS, 8% NaCl (0.5 N), 8% NaOH (0.1 N), 0.4% Essense (Bubble Gum). %, and Aquadest 30%. This formulation produces a pH value of 7.18. Meanwhile, the density is 1.0257 g/cm3. The viscosity of this composition is 2.999 Pa.s. The stability of the foam power is 66,7% and the corrosion resistance test results get a value of 0.145655 mm/year or in the "Good" category in terms of corrosion resistance.
Preliminary study of chitin extraction from crickets (acheta domesticus) using deep eutectic solvent Nur Fadila, Salsabil Intan; Athirah, Febriana Azhar; Perdani, Meka Saima; Pambudi, Teguh; Umam, Hilman Imadul
Sainteks: Jurnal Sain dan Teknik Vol 6 No 2 (2024): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i02.774

Abstract

Pada penelitian ini telah dilakukan ekstraksi kitin dari Jangkrik Rumah (Acheta Domesticus) melalui green process menggunakan Deep Eutectic Solvent (DES). DES yang digunakan dibuat dari komposisi Choline Chloride:Citric Acid Monohydrate dengan perbandingan molar 1:2. Proses ekstraksi dilakukan dengan variasi waktu (2, 4, dan 6 jam) dan perbandingan bahan baku dengan pelarut (1:10, 1:15 dan 1:20). Jangkrik rumah memiliki kandungan protein sebesar 20–40%, lemak sebesar 25%, mineral seperti kalsium dan juga kitin. Penelitian ini mengeksplorasi potensi jangkrik rumah untuk menjadi bahan baku kitin. Tujuan dari penelitian ini adalah mengetahui pengaruh perbandingan bahan baku dengan jumlah pelarut dan waktu ekstraksi terhadap nilai rendemen dan derajat asetilasi serangga jangkrik rumah. Hasil penelitian ini menunjukkan kandungan rendemen kitin pada sembilan sampel sekitar 45% hingga 94% dan DA pada bilangan gelombang 1560 cm-1 dan 2875 cm-1 sekitar 68.17% hingga 957.70%, hal ini dikarenakan masih terdapat sisa DES, protein yang ditunjukkan pada FTIR pita gelombang 1540 cm−1 dan kandungan mineral yang ditunjukkan pada peregangan O-H dan NH di pita 3450 cm-1 dan 3270 cm-1 sampel kitin. Pengaruh perbandingan bahan baku dengan pelarut dan waktu ekstraksi juga dapat mempengaruhi nilai DA dan rendemen. Namun hasil optimum DA yang diambil pada bilangan gelombang 1560 cm-1 dan 2875 cm-1 yaitu pada sampel JRC 215 sebesar 68.17% dan rendemen kitin pada sampel JRC 410 dengan presentase rendemen 45.50%.
Preliminary Study of Chitin Extraction from House Crickets (Acheta Domesticus) Through Green Process Using Deep Eutectic Solvent (DES) Chlorine Chloride - Urea Athirah, Febriana Azhar; Umam, Hilman Imadul; Nur Fadila, Salsabil Intan; Pambudi, Teguh; Perdani, Meka Saima
BERKALA SAINSTEK Vol 12 No 3 (2024)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v12i3.47769

Abstract

Insects serve as a sustainable alternative source of chitin compared to crustaceans, due to their advantages in availability, reproductive rates, and resilience to environmental conditions. Chitin is a natural biopolymer widely utilized in various industries, including food, pharmaceuticals, and biotechnology. This study represents a preliminary investigation aimed at evaluating the effects of varying solution ratios and stirring times on the yield of chitin and the degree of acetylation (DA) obtained from insect chitin extraction using a Green Process with Deep Eutectic Solvent (DES) composed of Choline Chloride (ChCl) and Urea in a molar ratio of 1:2 (w/w). The extraction process involved varying the solution-to-raw material ratios (1:10, 1:15, 1:20) and stirring times (2, 4, 6 hours). Analysis was performed using FTIR to measure DA, and yield calculations were based on the mass comparison before extraction. The results indicated that the DA values and mass yields were lower than those reported in the literature, likely due to residual impurities and the incomplete removal of DES from the samples. The highest DA value of 78.44% was achieved in the sample with a 1:10 ratio and a stirring time of 6 hours, while several other samples exhibited lower DA values due to ineffective deproteinization. This preliminary study provides an important foundation for further research, emphasizing improvements in extraction and purification methods to enhance the quality of the produce.
The Effect of Linear Alkylbenzene Sulfonate on Corrosivity of Vehicle Shampoo from Overproduction Softener Production in Industry Alzena Yulianto, Raisa Syifa; Hasannah, Cintiya Septa; Perdani, Meka Saima; Suci, Farradina Choira
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 9, No 2 (2024): EDISI SEPTEMBER 2024
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v9i2.5915

Abstract

Indonesia is one of the countries with a significant number of laundry services, which has led to the emergence of numerous companies engaged in the production of high-quality softener products. This extensive softener production has resulted in a considerable surplus of the product, which can potentially harm the environment. This study aimed to process the excess products produced by the softener industry into vehicle shampoo and LAS (Linear Alkylbenzene Sulfonate), the main component of vehicle shampoo. We will achieve this through trial-and-error mixing methods and optimal variations. We aim to create products with sales value that the public can use to wash vehicles at a more economical price while maintaining quality comparable to commercial products. The optimal variation results obtained from this research were 40 ml of fragrance, 50 ml of Sodium Laureth Sulfate (SLES) Texapon, and 40 g of LAS, with test results of pH 7.92 and density 1.025 g.cm-3. The viscosity was found to be 2.41 Pa.s, the foaming power was 91.67%, and the corrosivity was 0.09291 mm/year. These results showed that the vehicle shampoo meets corrosion resistance standards. 
Synthesis of Acrylonitrile Butadiene Styrene Membrane with Sulfonated Reduced Graphene Oxide and Cerium Filler Siswantito, Firgi; Dampang, Sarah; Perdani, Meka Saima; Hakim, Muhammad Fahmi; Iskandar, Riska Listiarini
Indonesian Journal of Chemical Analysis (IJCA) Vol. 8 No. 2 (2025): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol8.iss2.art1

Abstract

The study investigates the use of acrylonitrile butadiene styrene (ABS) polymer modified by sulfonated reduced graphene oxide (s-rGO) and cerium (Ce) as an alternative membrane to Nafion for Direct Methanol Fuel Cell (DMFC) applications. Pure ABS membranes and ABS membranes with s-rGO/Ce fillers were synthesized and characterized, with sulfonation at 60 °C using filler concentrations of 1%, 3%, and 5% v/v. The addition of fillers aimed to enhance ion exchange capacity (IEC), water absorption, and reduce methanol permeability. The membrane with 5% filler content showed optimal performance, with an IEC of 0.35 meq/g, a swelling degree of 1.5%, and controlled methanol permeability of 1.2670 × 10⁻⁷ cm²/s. FTIR analysis confirmed the presence of sulfonate groups (S=O) at 1054 cm⁻¹, indicating successful sulfonation. SEM analysis revealed that the filler was well-dispersed and formed more defined pores without compromising the structural integrity of the ABS matrix. This study demonstrates the potential of s-rGO/Ce-modified ABS membranes as a viable alternative to Nafion membranes in DMFC applications.
Co-Authors Alzena Yulianto, Raisa Syifa Andini, Sri Aswin Falahudin Athirah, Febriana Azhar Dampang, Sarah Dewi, Nurazizah Melani Fadilla, Amalia Dian Fauzi, Muhammad Rezal Alfian Hakim, Muhammad Fahmi Hasannah, Cintiya Septa Heri Hermansyah Hilman Imadul Umam Irfan Gustian Iskandar, Riska Listiarini Liana Wahyuni Maelan, Nabilla Maharani Malisi, Sibro Margaretha, Grace Morina Adfa Nur Fadila, Salsabil Intan Nurhana, Eti Ayu Prajati, Gita Putri, Dwini Normayulisa Saiqa Ikram SALPRIMA YUDHA S Siswantito, Firgi Sitanggang, Christin Octaviani Suci, Farradina Choira Teguh Pambudi Triawan, Deni Agus Wahyuningtyas, Aulia