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INDONESIA
Indonesian Journal of Chemistry
Published by Universitas Gadjah Mada
ISSN : 14119420     EISSN : 24601578     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry
Indonesian Journal of Chemistry is an International, peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry including applied chemistry. The journal is accredited by The Ministry of Research, Technology and Higher Education (RISTEKDIKTI) No : 21/E/KPT/2018 (in First Rank) and indexed in Scopus since 2012. Since 2018 (Volume 18), Indonesian Journal of Chemistry publish four issues (numbers) annually (February, May, August and November).
Arjuna Subject : -
Articles 25 Documents
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Search results for , issue "Vol 22, No 5 (2022)" : 25 Documents clear
Synthesis, Characterization, and Antibacterial Activity of Lanthanide Metal Complexes with Schiff Base Ligand Produced from Reaction of 4,4-Methylene Diantipyrine with Ethylenediamine Kawther Adeeb Hussein; Naser Shaalan
Indonesian Journal of Chemistry Vol 22, No 5 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.74214

Abstract

An environmentally friendly method for the synthesis of Schiff bases was described by combining 4,4-methylenediantipyrine with ethylenediamine. The complex was prepared in a classical way, the usual condensation reaction method. A series of metal complexes were prepared from reactions of lanthanide nitrate salts [Nd+3, La+3, Er+3, Gd+3, and Dy+3] with a Schiff base ligand. The structures of the complexes were confirmed by analytical studies, spectral measurements, and thermal studies, and the prepared ligand was characterized using microanalysis technique, UV-Visible, infrared, nuclear magnetic resonance 1H-NMR and 13C-NMR, mass spectrometry, and thermogravimetric analysis (TGA), and the addition of conductivity measurement and magnetic moment of complexes. The results showed that these complexes have a consistency of 10 in which the elements are bonded with the ligand through the two nitrogen atoms at C=N and that the bonding ratio between the metal:ligand is in 1:2 ratio. By using agar disc-spreading, we tested several in vitro compounds for their antibacterial activity against four pathogenic bacteria, including Staphylococcus aureus, Bacillus subtilis, Escherichia coli, and Klebsiella pneumoniae. The majority of the complexes demonstrated antibacterial activity.
Synthesis, Thermal Analysis, and Thermodynamic Properties Study of New Quinoline Derivative and Their V(IV), Co(II), and Cu(II) Complexes Raghad Jawad Kadhim Aldoghachi; Faris Abdulridha Jassim Aldoghachi; Tahseen Abdul Qader Alsalim; Mohd Lokman Ibrahim
Indonesian Journal of Chemistry Vol 22, No 5 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.74423

Abstract

A new ligand (E)-2-((2-chloro-6-methylquinoline-3-yl)methylene)-N'-((E)-(2-chloro-6-methylquinoline-3-yl)methylene)hydrazine-1-carbothiohydrazide (QH) was prepared by reacting hydrazine hydrate with carbon disulfide to yield thiocarbohydrazide. The thiocarbohydrazide in the second step was treated with a quinoline derivative 2-chloro-6-methylquinoline-3-carbaldehyde to yield the ligand. The ligand was identified by spectroscopic techniques FTIR, 1H-NMR, and 13C-NMR. Next, vanadium (V), cobalt (Co), and copper (Cu) complexes were prepared in the [M:L] ratio of 1:1 (QV, QCo, QCu). The complexes were characterized using FTIR, ESI, magnetic susceptibility, and molar conductivity. The thermal analysis (TGA) of V(IV), Co(II), and Cu(II) complexes were studied. The activation thermodynamic parameters, such as the energy of activation, enthalpy, entropy, and free energy change of the complexes, were evaluated, and the stabilities of the thermal decomposition of the complexes were discussed.
Characterization of Lignin Peroxidase from the Suspected Novel Strain Phanerochaete chrysosporium ITB Isolate Evi Susanti; Tri Ardyati; Suharjono Suharjono; Aulanni'am Aulanni'am
Indonesian Journal of Chemistry Vol 22, No 5 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.74637

Abstract

This study was aimed to characterize lignin peroxidase (LiP) obtained from Phanerochaete chrysosporium ITB isolate. The characterizations included molecular weight, the pH and optimum working temperature of the crude extract of the enzyme, the temperature stability, the effect of metal ions and inhibitors, their precipitation with ethanol, and the storage stability. The LiP of P. chrysosporium ITB isolates was 34 kDa. The crude extract of LiP displays high activity at pH between 3 until 5 and 26–32 °C, has good thermal stability at 26–32 °C for 20 h. The activity is affected by Pb2+, K+, Co2+, Fe2+, Cd2+, Mg2+, and Cu2+ EDTA, Na+, Cr3+, Hg2+, NaN3, Ni2+, and Ca2+ ions, is not affected by Mn2+ and Zn2+ ions, precipitated with the optimum ethanol at 64% ethanol saturation which results in an increase in specific activity of 2.3 times. The crude extract storage at 0 °C is more stable than the precipitate resulting from ethanol precipitation and resuspension from ethanol precipitation. These results strengthen that LiP from P. chrysosporium is another LiP isoenzyme that can be used for bioremediation processes. Unfortunately, the concentration using the ethanol precipitation method has not been effective, so further studies using other methods should be required.
Synthesis and Characterization of ZnO Nanoparticles via Thermal Decomposition for Zn(II) Schiff Base Complex Hadeer Mohammed Subhi; Ali Taleb Bader; Hazim Yahya Al-Gubury
Indonesian Journal of Chemistry Vol 22, No 5 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.74753

Abstract

Zinc(II) oxide (ZnO) nanoparticles were easily produced in this research by thermal decomposition of the Zn(II) Schiff base complex. The ligand was synthesized via condensation of benzylamine with 2-hydroxybenzaldehyde. The Zn(II) Schiff base complex was prepared by the reaction between zinc salt and Schiff base with the molar ratio of 1:1 (metal:ligand). The binary complex powder was calcined at 700 °C to produce ZnO nanoparticles. Various methods were used to characterize the Schiff base, complexes, and nanoparticles, including 1H and 13C-NMR, FTIR, TGA, DTA thermal analysis, XRD, TEM, SEM, EDX, BET, UV-Vis Diffuse Reflectance, atomic absorption, melting point, and UV-Vis spectrophotometer. ZnO nanoparticles had an average crystallite size of 48.2 nm.
Synthesis, Cytotoxicity Evaluation and Molecular Docking Studies of Xanthyl-Cinnamate Derivatives as Potential Anticancer Agents Muthia Rahayu Iresha; Jumina Jumina; Harno Dwi Pranowo; Eti Nurwening Sholikhah; Faris Hermawan
Indonesian Journal of Chemistry Vol 22, No 5 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.76164

Abstract

A new series of xanthyl-cinnamate hybrid compounds (4a-d) have been synthesized and screened through in vitro assay against four human cancer cell lines, i.e., HeLa, T47D, A549, and WiDr. The results revealed that xanthone hybridization with cinnamic acid increases the selectivity of the compounds with SI values of 2.75–209.03 compared to its parent oxygenated-xanthone. Compound 1,3-dihydroxyxanthen-6-yl cinnamate (4c) showed high cytotoxic activity against WiDr cell lines with an IC50 value of 39.57 µM. Molecular docking studies revealed the possible binding modes of all hybrid compounds with EGFR protein. A complex of 3,6-dihydroxyxanthen-1-yl cinnamate (4d)-EGFR, as the best binding model, exhibited higher predicted EGFR inhibitory activity than erlotinib and oxygenated-xanthone with a ΔG and Ki value of -35.02 kJ/mol and 0.74 µM, respectively. Compounds 4c and 4d were chosen as the most potent derivates from the study.

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