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I Wayan Sutapa
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INDONESIA
Chemistry Indonesian Journal of Chemical Research
  • Indonesian Journal of Chemical Research (Indones.
  • Website
Published by Universitas Pattimura
ISSN : 23385359     EISSN : 26142627     DOI : 10.30598//ijcr.2021.-irm
Core Subject : Science, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Chemistry Engineering Environmental Science
Indo. J. Chem. Res. is a journal that regularly publishes primary articles covering all branches of chemistry and its sub-disciplines. Published articles consist of complete research, short communication, and review articles. The scope of published articles is not limited to inorganic chemistry, physical chemistry, organic chemistry, analytical chemistry, and biochemistry. Editors can invite articles review of authors that includes the latest developments in the field of interest of certain chemicals. A contribution is open to researchers from all countries.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 325 Documents
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Physicochemical Characteristics and Antioxidant Activity of Coconut Shell Liquid Smoke and Its Potential as a Solvent for Chitosan Asmianor Latifah; Ahmad Budi Junaidi; Rahmat Eko Sanjaya
Indonesian Journal of Chemical Research Vol 14 No 1 (2026): Edition for May 2026
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2026.14-asm

Abstract

Liquid smoke is a product obtained from the condensation of biomass pyrolysis at high temperatures and is widely applied in the food industry and biopolymer-based material development. Coconut shell is a potential raw material due to its high lignocellulosic content, which decomposes into phenolic compounds, carbonyls, and organic acids during pyrolysis. The research aims to investigate the chemical characteristics and antioxidant activity of liquid smoke derived from coconut shell, as well as to evaluate its effectiveness as a chitosan solvent. The analyzed parameters included acetic acid content, pH, total phenolic content, antioxidant activity using the DPPH method, and chitosan solubility at various liquid smoke concentrations (5%, 10%, 15%, and 20%). The results showed the total acid content of liquid smoke was 6.798 ± 0.398% g AAE/mL, with a pH value of 2.42 ± 0.04. The total phenolic content was 4.715 ± 0.878% g GAE/mL. Antioxidant activity testing resulted in an IC₅₀ value of 0.53%, indicating strong antioxidant capacity. Chitosan dissolved optimally in 20% liquid smoke, comparable to dissolution in 2% acetic acid. These findings demonstrate that coconut shell liquid smoke has significant antioxidant potential and can serve as an environmentally friendly alternative solvent for chitosan dissolution.
Evaluation of 5,5’-Oxybis(1,3,7-Trihydroxy-9H-Xanthen-9-One) as an Anticancer Agent Through In Vitro and In Silico Tests Ayu Nadila Safitri; Aldillah Herlambang; Muhammad Irhash Shalihin; Nurul Pratiwi; Putri Dwi Mulyani; Nania Septiyani; Muktaf Wando Saputra
Indonesian Journal of Chemical Research Vol 14 No 1 (2026): Edition for May 2026
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2026.14-saf

Abstract

Breast cancer is among the most common malignancies globally and continues to be a primary cause of cancer-related deaths in women. Modern chemotherapeutic agents often exhibit resistance and lack of selectivity for healthy cells, leading to significant side effects. Consequently, several strategies are essential to overcome resistance and enhance the selectivity and efficacy of chemotherapeutic drugs derived from natural sources. This study investigates the anticancer activity of a new bis-xanthone compound, 5,5'-Oxybis(1,3,7-trihydroxy-9H-xanthen-9-one), in MCF-7 breast cancer cells using a combination of in vitro and in silico approaches. The compound exhibited cytotoxicity against MCF-7 breast cancer cells, with an IC50 value of 30.47 µg/mL. The pharmacokinetic characteristics of bis-xanthone compounds were evaluated using absorption, distribution, metabolism, excretion, and toxicity (ADMET) tests, demonstrating a more favorable profile than that of doxorubicin, a standard anticancer drug.
Potential of Mangrove Plants (Rhizophora apiculata) as Accumulators of Pb (II) Metal Ions in the Mangrove Ecosystem of Nania Village, Ambon City Abraham Mariwy; Julita. B Manuhutu; Secondina Arbol
Indonesian Journal of Chemical Research Vol 14 No 1 (2026): Edition for May 2026
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2026.14-abr

Abstract

Mangrove plants play an important role in maintaining the quality of coastal environments because they are capable of absorbing and accumulating heavy metals from water sediments. Therefore, this study aims to determine the potential of mangrove plants (Rhizophora apiculata) as accumulators of Pb (II) metal ions in the mangrove ecosystem of Nania Village, Ambon City. The results of this study show that the highest levels of Pb (II) metal ions were found in leaf samples at three sampling locations, followed by sediment and root samples. Characterization results using XRF to identify the types and composition of elements in sediment samples showed that Fe, K, Ca, and Ti were the elements with the highest composition, followed by Ba, Zr, Mn, Zr, Zn, Sn, and Pb. The results of sediment particle type measurements using a sieve shaker at three sampling locations showed that the dominant sediment particle type is coarse gravelly sand, which has a low capacity to absorb and accumulate heavy metals. Meanwhile, the calculation results of the BCF and TF values of mangrove plants (Rhizophora apiculata) were > 1, indicating their ability as accumulators to accumulate Pb (II) metal ions in the mangrove ecosystem in Nania Village, Ambon City.
Synthesis and Characterization of Modified Chrysophyllum albidum Seed Sodium Alginate Copolymers for Methylene Blue Removal Nathanael Yinka Ilesanmi; Funmilola Yetunde Falope; Adeiza Emmanuel Samuel; Esther Ayodotun Ilesanmi; Bamitale Fabiyi; Edwin Andrew Ofudje
Indonesian Journal of Chemical Research Vol 14 No 1 (2026): Edition for May 2026
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2026.14-nat

Abstract

This study aimed to evaluate the methylene blue adsorption performance of sodium alginate-based copolymers synthesized from acid-treated and base-treated Chrysophyllum albidum seed. The copolymers were prepared through chemical pretreatment and copolymerization with sodium alginate, then characterized using Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy to assess functional groups, structural arrangement, and surface morphology. Batch adsorption experiments were conducted under varying pH, adsorbent dosage, temperature, and contact time, while the data were evaluated using Box Behnken optimization, Langmuir and Freundlich isotherm models, and pseudo-first-order and pseudo-second-order kinetic models. The base-treated copolymer showed superior adsorption performance, achieving 90.1% maximum methylene blue removal compared with 79.9% for the acid-treated copolymer. It also recorded higher Langmuir adsorption capacity, stronger adsorption intensity, and better surface accessibility. The optimum conditions were pH 10.45, dosage 0.58 g, temperature 36.77 °C, and contact time 174.47 min, with desirability of 1.000. The adsorption kinetics followed the pseudo-second order model. The results indicate that base-treated Chrysophyllum albidum seed sodium alginate copolymer is a promising low-cost adsorbent for methylene blue removal from wastewater.
Molecular Dynamics Study of Electrolyte Effects on Carbon Electrode in Supercapacitors Syifa Salsabina; Raissa Raissa; Muttaqin Muttaqin; Tirta Rona Mayangsari
Indonesian Journal of Chemical Research Vol 14 No 1 (2026): Edition for May 2026
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2026.14-syi

Abstract

The demand for efficient and sustainable global energy sources continues to increase alongside technological developments. In this case, the development of electrical energy storage devices, such as supercapcitor, is essential. Supercapacitors have a fairly high capacitance, large power density, fast charging and discharging processes, and good durability. Computational studies through molecular dynamics simulations were conducted to understand the properties and dynamics of a supercapacitor system with activated carbon-based electrodes. This study aims to observe the effect of electrolyte types on the properties of activated carbon as a supercapacitor electrode based on the dynamic movement of electrolyte ions in the system molecular dynamics simulations using Large Scale Atomic/Molecular Massively Parallel Simulator (LAMMPS) software with OPLS-AA force field parameters were carried out to study the supercapacitor system. The variations of electrolyte systems studied include C₃H₅N₂⁺/BF₄⁻, C₃H₅N₂⁺/CH₃COO⁻, and K+/OH- in acetonitrile (ACN) solvent. Simulation results show that the system with C₃H₅N₂⁺/BF₄⁻ electrolyte has the best performance as a supercapacitor system. This is seen from the interface interaction with the electrode and good ion diffusion, the highest ion diffusion coefficient value of 18,4×10-11 m2/s, and the highest specific capacitance value of 199,86 μF/cm2.

Page 33 of 33 | Total Record : 325

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