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Indonesian Journal of Chemical Analysis
ISSN 2622-7401 · Universitas Islam Indonesia · 138 articles in the index
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Journal Article
Biodiesel Synthesis with Different Feedstock Oils: Free Fatty Acid Analysis and Fuel Properties Characterization
The present study evaluates the feasibility of non-edible and waste oils as sustainable feedstocks for biodiesel production through a two-step esterification–transesterification process. Waste cooking oil, Calophyllum inophyllum oil, and sunflower oil were employed as raw materials, with sodium…
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Journal Article
Total Alkaloid Determination in Ethanolic Extract of Cocoa (T. cacao) and Robusta Coffee (C. canephora) Beans using TLC-Densitometric Method
Alkaloids are a major class of bioactive secondary metabolites commonly found in various natural products, including cocoa (Theobroma cacaoL.) and robusta coffee (Coffea canephora). These compounds have been widely reported to exhibit important pharmacological activities, including antioxidant…
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Journal Article
Phytochemical Characterization and Quantification of Phenolic, Flavonoid, and Tannin Contents in Ethanol Extract of Medicago sativa
Medicago sativa (alfalfa) leaves are known to contain diverse bioactive phytochemicals, particularly phenolic and flavonoid compounds that are commonly associated with antioxidant activity. This study aimed to characterize the phytochemical profile of the ethanol extract of alfalfa leaves and…
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Journal Article
Microalgae for CO₂ Capture Under Extreme Conditions and Its Biomass: A Mini Review
The continuous increase in carbon dioxide (CO₂) emissions has raised atmospheric CO₂ concentrations to over 420 ppm. This has become one of the main drivers of global climate change, underscoring the need for efficient, sustainable mitigation strategies. Microalgae offer great potential for CO₂…
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Journal Article
UV-Visible Spectrophotometric Determination of Ni(II) Using a Schiff Base Ligand Derived from 1,5-Diphenylcarbazone and Aniline
UV-Visible spectrophotometric approach for Ni(II) determination was developed using a Schiff base ligand synthesized from 1,5-diphenylcarbazone and aniline. The ligand was isolated with a yield of 64.98% and exhibited absorption bands at 239 and 278 nm, confirming the formation of the azomethine…
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Journal Article
A Review on the Potential of UiO-66-NH₂ Metal-Organic Framework as a Proton Exchange Membrane in Microbial Fuel Cells
The escalating global demand for energy has accelerated the development of efficient and environmentally sustainable renewable energy technologies. Among these, Microbial Fuel Cells (MFCs) have emerged as a promising bioelectrochemical system capable of converting chemical energy derived from…
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Journal Article
Enhancement of Pineapple Industrial Waste Delignification Through the Effect of Microwave Irradiation Duration with Alkali Assistance.
Delignification is an important step for removing lignin, increasing the accessibility of cellulose and hemicellulose for various industrial applications. This study investigated the effect of microwave irradiation duration on the alkaline-assisted delignification of pineapple peel waste using a…
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Journal Article
Synthesis of Deep Eutectic Solvent (DES) Based on Glycerol and Propylene Glycol as a Medium for Anthocyanin Extraction from Senduduk Flowers (Melastoma sp.)
Environmental concerns related to the extensive use of conventional organic solvents have driven the development of greener extraction technologies, including the application of deep eutectic solvents (DES) as environmentally friendly alternatives. This study aimed to evaluate the effectiveness of…
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Journal Article
Phytochemical Study of Ethanol Extract of Sengkubak Leaves (Pycnarrhena cauliflora (Miers) Diels) and Molecular Docking Analysis as a Potential Anti-Breast Cancer Agents
Reactive Oxygen Species (ROS) are a group of free radicals that play a major role in causing oxidative stress, which can trigger the development of degenerative diseases such as cancer. Sengkubak (Pycnarrhena cauliflora (Miers) Diels) contains antioxidant that may help protect the body from free…
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Journal Article
Synthesis of Acrylonitrile Butadiene Styrene Membrane with Sulfonated Reduced Graphene Oxide and Cerium Filler
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…
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Journal Article
Optimization of Contact Time and Stirring Speed in The Adsorption of Cd(II) Using Acacia crassicarpa Bark Powder as Adsorbent
Acacia crassicarpa bark powder showed potential as an adsorbent due to its high cellulose content of approximately 50%. This research aimed to determine the optimum contact time, stirring speed, and adsorption kinetic models of Acacia crassicarpa bark powder for Cd(II) removal. Adsorbent…
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Journal Article
Photocatalytic Activity of ZnO Nanoparticles Synthesized Using Persea sp. Leaf Extract Toward Methylene Blue Dye Degradation
Methylene blue dye is widely used in various industries, but improper disposal can severely harm aquatic ecosystems. Zinc oxide (ZnO), a well-known semiconductor, is frequently employed to degrade dye pollutants in aqueous media. This study synthesized ZnO nanoparticles via a precipitation method…
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Journal Article
Preliminary Study on Fe(III) Detection Using Nitrogen-Doped Carbon Quantum Dots via HSV-Based Smartphone Fluorescence Analysis
This study successfully synthesized nitrogen-doped carbon quantum dots (N-CQDs) from banana peel waste via a hydrothermal method using urea as the nitrogen source. FTIR and optical characterization confirmed the presence of hydroxyl, carbonyl, and amine functional groups, along with distinct…
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Journal Article
Heating Rate Behaviour Pyrolysis of Empty Fruit Bunches : Kissinger Kinetic Analysis
Biomass waste such as Empty Fruit Bunches (EFB), a byproduct of palm oil production in Indonesia, represents a promising renewable energy resource. Pyrolysis, a thermochemical conversion process, transforms this waste into valuable products and energy sources. This study uses the Kissinger kinetic…
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Journal Article
Synthesis of Biochar-Like Graphene Nanosheets (BLG) from Candlenut Shells with Integrated Conductive and Antibacterial Functionalities
Graphene’s exceptional electrical, mechanical, and chemical properties have enabled breakthroughs in electronics, energy storage, and biomedicine, yet large-scale, low-cost, and sustainable production methods remain elusive. Here, we report a facile, scalable route to synthesize Biochar-Like…
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Journal Article
Modification of Screen-Printed Carbon Electrode (SPCE) by Magnetic Fe3O4-Chitosan for Detection of Hexavalent Chromium
A new modification of screen-printed carbon electrode (SPCE) with magnetic Fe3O4-chitosan has been developed. Magnetic Fe3O4-chitosan was made from a mixture of Fe2+/Fe3+ (1:2) with 1% chitosan. Sodium tripolyphosphate was used as a crosslinking reagent for chitosan under alkaline conditions using…
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Journal Article
Effect of Gondorukem (Arpus) Adhesive Composition on Organic Waste-Based Briquettes using Biodrying Technology
Briquettes are an alternative to coal, wood, and fossil fuels. Briquettes can be made with simple, inexpensive materials. The adhesive is gondorukem (arpus), which is easy to find. Making briquettes involves preparing raw materials, mixing adhesives with organic waste, and testing the finished…
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Journal Article
Optimization of pH Conditions for Lead Adsorption using Ion-Imprinted Polymer (IIP) with EDTA as Ligand
Ion-imprinted polymers (IIPs) are selective adsorbents for heavy metal removal. In this study, IIPs were synthesized using Pb²⁺ as a template, EDTA as a ligand, methacrylic acid (MAA) as a monomer, and ethylene glycol dimethacrylate (EGDMA) as a crosslinker via precipitation polymerization in an…
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Journal Article
Uncertainty of Routine pH Measurements Evaluated by the Principle of Pooled Calibrations
In the digital age, taking logarithms of data is no longer necessary when assessing pH measurement uncertainties. The focus is now on using raw, unaltered data. Routine pH measurements often differ from those in reference labs, so quantifying these differences is necessary. The uncertainties of pH…
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Journal Article
Development of Non-Enzymatic Glucose Sensor Using Ag-Au Bimetallic Modified Pencil Lead Electrode with Voltammetry Method
Glucose is an essential monosaccharide that serves as the main source of energy in the human body. An imbalance in glucose levels in the body can lead to serious metabolic disorders, such as diabetes mellitus. Therefore, effective methods of analyzing and monitoring glucose levels are needed for…