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# Judul Penulis Tahun Akses
Jurnal Institusi

Properties and Toxicity of Cobalt(II) Complex with 2,4,5-triphenyl-1H-imidazole Ligand

Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 260-267
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21140http://creativecommons.org/licenses/by-nc-nd/4.0
Binuclear cobalt(II) complex with 2,4,5-triphenyl-1H-imidazole ligand has been synthesized using reflux method. The yellowish green crystals with needle-like shape were obtained. Determination of molecular formula of the complex was carried out using...
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Adsorption of [AuCl4]– on Ultrasonically and Mechanical-Stirring Assisted Mg/Al-NO3 Hydrotalcite-Magnetite

Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 268-276
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21141http://creativecommons.org/licenses/by-nc-nd/4.0
It has been examined the application of Mg/Al-NO3 hydrotalcite-magnetite synthesized mechanically (MHT) and ultrasonically (UMHT) by co-precipitation method as adsorbents for [AuCl4]– from aqueous solution. Two techniques of synthesis were conducte...
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Jurnal Institusi

Radiochemical Separation of 161Tb from Gd/Tb Matrix Using Ln Resin Column

Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 283-288
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21143http://creativecommons.org/licenses/by-nc-nd/4.0
Terbium-161 (161Tb) is a potential radiolanthanide due to its favorable properties for treatment small size of cancer. Preliminary study on radiochemical separation of 161Tb from Gd/Tb matrix using Ln resin column based on extraction chromatography m...
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Jurnal Institusi

Sorption Characteristics of 137Cs and 90Sr into Rembang and Sumedang Soils

Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 277-282
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21142http://creativecommons.org/licenses/by-nc-nd/4.0
In order to understand the sorption behavior of 137Cs and 90Sr into soil sample from Rembang and Subang, it is important to estimate the effect of contact time, ionic strength and concentration of metal ion in the solution. For this reason, the inter...
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Jurnal Institusi

Cyclic Acetalization of Furfural on Porous Aluminosilicate Acid Catalysts

Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 289-296
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21144http://creativecommons.org/licenses/by-nc-nd/4.0
Porous aluminosilicate materials included microporous and mesoporous ZSM-5, hierarchical aluminosilicates, and mesoporous aluminosilicate were tested for acetalization of furfural (furan-2-carbaldehyde) with propylene glycol. The existing synthesis m...
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Purification and Characterization of Amyloglucosidase Enzyme from the Thermophilic Endomycopsis fibuligera Using Sago Starch as a Substrate

Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 302-307
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21147http://creativecommons.org/licenses/by-nc-nd/4.0
An investigation on purification and characterization of amyloglucosidase enzyme from Endomycopsis fibuligera by fermentation of sago starch has been carried out. This enzyme is inductive and can be produced by fermenting sago starch in a medium cont...
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HPLC Fingerprint Analysis Combined with Chemometrics for Authentication of Kaempferia galanga from Related Species

Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 308-314
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21146http://creativecommons.org/licenses/by-nc-nd/4.0
Fingerprint analysis using high performance liquid chromatography (HPLC) has been developed for authentication of Kaempferia galanga from related species, such as Kaempferia pandurata and K. rotunda. By comparing the fingerprint chromatograms of K. g...
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Antioxidant Activity of Moringa oleifera Extracts

Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 297-301
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21145http://creativecommons.org/licenses/by-nc-nd/4.0
Moringa oleifera have been evaluated for its antioxidant activity. M. oleifera leaves were extracted with methanol, ethyl acetate, dichloromethane and n-hexane. The antioxidant activity of extracts were evaluated by 1,1-diphenyl-2-picrylhydrazyl (DPP...
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Preservation of Natural Colorant Extract of Jalawe Fruit Peel (Terminalia bellirica) in Water-Based Solution

Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 315-321
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21148http://creativecommons.org/licenses/by-nc-nd/4.0
The general objective of this study is to preserve natural colorant extract of jalawe fruit peel in water-based solution during storing. The specific objectives in this research are finding suitable type and amount of antimicrobial compound to preven...
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Comparative Study on the Adsorption of [AuCl4]– onto Salicylic Acid and Gallic Acid Modified Magnetite Particles

Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 329-337
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21150http://creativecommons.org/licenses/by-nc-nd/4.0
Salicylic acid-modified magnetite (Mag-SA) and gallic acid-modified magnetite (Mag-GA) particles were prepared by co-precipitation procedure. Characterization results showed the interaction that occurs between the surface of magnetite with salicylic ...
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Improvement of Student Critical Thinking Skills with the Natural Product Mini Project Laboratory Learning

Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 322-328
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21149http://creativecommons.org/licenses/by-nc-nd/4.0
This research aims to investigate effect of learning using natural product mini project laboratory on students’ critical thinking skills. The research was conducted on sixth semester of 59 students of chemistry and chemistry education program from ...
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Jurnal Institusi

Evaluation of Lagergren Kinetics Equation by Using Novel Kinetics Expression of Sorption of Zn2+ onto Horse Dung Humic Acid (HD-HA)

Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 338-346
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21151http://creativecommons.org/licenses/by-nc-nd/4.0
Extraction and purification of humic acid from dry horse dung powder (HD-HA) was performed successfully and the purified HD-HA was then applied as sorbent to adsorb Zn2+. Extraction and purification were performed based on procedure of Stevenson (199...
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Photocatalytic and Photoelectrocatalytic Degradation of Methyl Orange Using Graphite/PbTiO3 Composite

Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 347-352
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21152http://creativecommons.org/licenses/by-nc-nd/4.0
Synthesis of graphite/PbTiO3 composite as a catalyst in photodegradation and photoelectrodegradation process of methyl orange have been conducted. The purposes of this research are to study the effect of radiation time, composition of composite, volt...
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Synthesis of ZnO Nanoparticles by Precipitation Method with Their Antibacterial Effect

Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 117-123
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21153http://creativecommons.org/licenses/by-nc-nd/4.0
The aim of this study was to synthesize and characterize Zinc oxide nanoparticles (ZnO-NPs) prepared by precipitation method. Zinc nitrate and sodium hydroxide was used as starting materials with biopolymer pectin as capping agent. ZnO-NPs were synth...
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Influences of Temperature on the Conversion of Ammonium Tungstate Pentahydrate to Tungsten Oxide Particles with Controllable Sizes, Crystallinities, and Physical Properties

Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 124-129
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21154http://creativecommons.org/licenses/by-nc-nd/4.0
The purpose of this study was to investigate influences of temperature on the conversion of ammonium tungstate pentahydrate (ATP) powder to tungsten trioxide (WO3) particles with controllable sizes, crystallinities, and physicochemical properties. In...
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Functionalization of Fe3O4/SiO2 with N-(2-Aminoethyl)-3-aminopropyl for Sorption of [AuCl4]-

Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 130-137
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21155http://creativecommons.org/licenses/by-nc-nd/4.0
Synthesis of Fe3O4/SiO2 modified with N-(2-aminoethyl)-3-aminopropyl group (Fe3O4/SiO2/ED) via coating method and its application for adsorption-desorption of anionic gold in aqueous solution have been conducted. The synthesized product was character...
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Hydrothermal Transformation of Natural Zeolite from Ende-NTT and Its Application as Adsorbent of Cationic Dye

Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 138-143
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21156http://creativecommons.org/licenses/by-nc-nd/4.0
A synthetic zeolite was produced from natural zeolite from Ende-Nusa Tenggara Timur (NTT) by hydrothermal method. This study aims to produce synthetic zeolite from Ende natural zeolite to remove cation dye through the adsorption process. Temperature ...
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Preparation of Citric Acid Crosslinked Chitosan/Poly(Vinyl Alcohol) Blend Membranes for Creatinine Transport

Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 144-150
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21157http://creativecommons.org/licenses/by-nc-nd/4.0
Preparation of membrane using crosslinking reaction between chitosan and citric acid showed that functional group modification increased the number of active carrier groups which lead to better transport capacity of the membrane. In addition, the sub...
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New Prenylated Stilbenes and Antioxidant Activities of Cajanus cajan (L.) Millsp. (Pigeon pea)

Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 151-155
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21158http://creativecommons.org/licenses/by-nc-nd/4.0
New Prenylated stilbene derivatives, 3-hydroxy-4-prenyl-5-methoxy-stilbene acid (1) and 5,4'-dihydroxy-3-methoxy-2-prenyl-stilbene (2) had been isolated from methanol extract of Cajanus cajan (L.) Millsp. (Pigeon pea), a member of family fabacea...
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The Phenolic Compound from Kalanchoe blossfeldiana (Crassulaceae) Leaf and Its Antiplasmodial Activity against Plasmodium falciparum 3D7

Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 156-161
Universitas Gadjah Mada, 2018DOI: 10.22146/ijc.21159http://creativecommons.org/licenses/by-nc-nd/4.0
Various species of Kalanchoe plants have been widely used as raw materials in traditional medicines. This study was the continuation of the researches on secondary metabolites from Indonesia Kalanchoe plants, focused on Kalanchoe blossfeldiana. Fresh...
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