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Published by Universitas Islam Negeri Syarif Hidayatullah Jakarta
ISSN : 24606065     EISSN : 25483013     DOI : 10.15408/jkv
Core Subject : Science,
Chemistry
Jurnal Kimia Valensi is a biannual and peer-reviewed open access journal published by Department of Chemistry, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta. This journal covering all aspect of chemistry.
Arjuna Subject : Umum - Umum
Articles 440 Documents
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In Silico Analysis of Tea Leaf Compounds Targeting Inflammatory Pathways and Acne-Related Genes Sumarlin, La Ode; Nurbaya, Siti; Wulandari, Meyliana; Sulaiman, Syed Azhar Syed
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 11, No. 2, November 2025
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v11i2.46468

Abstract

Acne (Acne vulgaris) is a chronic skin disease affected by Cutibacterium acnes infection and inflammatory pathways that trigger innate immune responses, such as inflammasome activation. The expression of inflammation-related genes plays a critical role in acne pathogenesis and immune modulation. This study aims to identify compounds from tea leaves (Camellia sinensis var. assamica) that can treat acne by influencing the expression of inflammatory-related genes through in silico analysis. The GSE6475 dataset was utilized to identify differentially expressed genes (DEGs) between acne-affected and normal skin samples (each group n=6). A total of 573 DEGs were identified and mapped to the KEGG inflammatory pathway. The hub gene analysis results showed six genes, including CXCL1, STAT1, and PIK3 (adj. P-value < 0.05). These key genes were then used to cross-validate skin grouping with acne lesions and normal skin. The structure of compounds (natural products) in tea leaves (C. sinensis var. assamica) was obtained from the PubChem database, and their activity against target proteins associated with the identified key genes was predicted using the SkelSpheres descriptor and Support Vector Regression method. This quantitative structure–activity relationship (QSAR)-based machine learning approach was selected because it enables high-throughput prediction of inhibitory potential using chemical descriptors and experimentally derived bioactivity data, providing broader predictive power than conventional molecular docking or molecular dynamics, which rely mainly on structural and energetic estimations. The in-silico prediction results showed that compounds such as theobromine, assamsaponin, procyanidin, and caffeine have exhibited good predicted activity (IC₅₀ ranging from 1.125 to 1.320 μM) as potential inhibitors of the PI3K/Akt pathway, which is known to play a role in the pathogenesis of acne. 
Preparation and Characterization of Pt/TiO2 Nanotube Arrays (TNAs) Cathode by Photoreduction Method for Hydrogen Evolution Ningsih, Sherly Kasuma Warda; Wibowo, Rahmat; Gunlazuardi, Jarnuzi
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 11, No. 2, November 2025
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v11i2.46475

Abstract

TiO2 nanotube arrays were fabricated using a two-step anodization method. TNAs have been modified by the photoreduction technique with Pt as the cathode in the photoelectrocatalytic zone for the reduction reaction of H+ to produce hydrogen. TNAs with Pt were modified using H2PtCl6 as the precursor by immersion of this solution on the TNA substrate. Pt/TNAs were characterized using SEM-EDX, UV-Vis DRS, XRD, Raman Spectroscopy, Photoluminescence (PL), and photoelectrochemical analysis. The results show that the morphology of TNAs in the tube forms 2.1mm in height, and Pt nanoparticles are formed on the mouth wall of the tube with a size of approximately 10nm. EDX analysis shows that the composition of Pt/TNAs is approximately 0.15%, Ti 37.09%, and O 62.76%, indicating that Pt has been decorated on the TNAs photoanode. The band gap of Pt/TNAs was 2.82 eV. The diffractogram shows three groups of diffraction peaks, indicating the presence of anatase TiO2, Ti as a substrate, and Pt, which has been modified in the TNAs. The Raman peaks of TNAs are confirmed to appear at Raman shifts of 144.75, 196.51, 395.94, 517.14, and 638.85 cm-1. PEC cathodes for hydrogen production using Pt-decorated TNAs have been successfully prepared using photoreduction.
Experimental and Molecular Docking Study of 3′,4′,5′-Trimethoxychalcones Targeting Overexpressed Protein in HCT-116 Colon Cancer Cells Danova, Ade; Wonganan, Piyanuch; Hermawati, Elvira; Kurniadewi, Fera; Musthapa, Iqbal; Chavasiri, Warinthorn
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 11, No. 2, November 2025
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v11i2.46483

Abstract

Cancer poses a substantial global health challenge. Colorectal cancer (CRC) is the second leading cause of cancer-related mortality after lung cancer and is associated with high mortality rates worldwide. Chalcones have attracted significant interest because of their diverse biological properties, including potential anticancer effects. In this study, five 3′,4′,5′-trimethoxychalcones (1-5) were tested against HCT-116 colon cancer cells using an MTT assay for the first time. Molecular docking was conducted to predict molecular interactions targeting three proteins (tubulin, EGFR, and CDK2). Among the five, four compounds (1, 3, 4, and 5) exhibited strong inhibitory activity against HCT-116 colon cells, with IC50 values < 10 µM. Compounds 1-5 showed potency as drug candidates based on the Lipinski rules and pharmacokinetic profiles using SwissADME and pkCSM online tools. Moreover, molecular docking was performed on compound 5 against three protein targets (tubulin, EGFR, CDK2) with binding affinities of -7.4, -7.3, and -8.5 kcal/mol, respectively, and showed major H-bond interactions. Therefore, these results suggest that compound 5 could be a potential inhibitor to be developed in future studies, both in vitro and in vivo, to understand its inhibition mechanism and efficacy.
Synthesis and Characterization of Copoly(Anethole-Stearyl Acrylate) as Phenol Adsorbent Handayani, Desi Suci; Pramono, Edi; Dewi, Anita Kusuma
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 11, No. 2, November 2025
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v11i2.46484

Abstract

This study aims to synthesize copoly (Anethole-stearyl acrylate, SA) through cationic polymerization at room temperature (28–36°C) under a nitrogen atmosphere. The synthesis was carried out without a solvent using BF3O(C2H5)2 as the initiator. SA was added in varying weights of 2%, 4%, and 6% relative to anethole. The product obtained from the synthesis was then applied as a phenol adsorbent using the batch method at different contact times. FTIR (Fourier Transform Infrared) analysis showed that methoxy group (-OCH3) termination occurred at wavenumber 1147 cm-1, followed by the loss of vinyl group (C=C) at 1633–1654 cm-1. In addition, the loss of =C-H vinyl bending and stretching group absorption occurred at 964–998 cm-1 and 3025–3095 cm-1, respectively. Structural analysis using 1H-NMR showed the loss of the vinyl group proton signal at a chemical shift (δH) of 5.8–39 ppm. The addition of 2%, 4%, and 6% SA led to an increase in intrinsic viscosity of 26.891, 41.093, and 55.336, respectively. The morphology of copoly showed the presence of various cavities. The degradation temperature of the product increased with the addition of SA. During the application of copoly as a phenol adsorbent, the 6% (w/w) concentration had the largest adsorption capacity of 2.22 mg/g.
Eudesman-Type Sesquiterpenoids from Stem Bark Dysoxylum gaudichaudianum and Cytotoxic Evaluation Against Human HeLa Cervical Cancer Maira, Faizah; Naini, Al Arofatus; Mayanti, Tri; Farabi, Kindi; Fajriah, Sofa; Retnowati, Rurini; Supratman, Unang
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 11, No. 2, November 2025
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v11i2.46788

Abstract

Two eudesmane-type sesquiterpenoids were isolated from the stem bark of Dysoxylum gaudichaudianum: 6α-hydroxy-eudesm-4(15)-en-1-one (1) and eudesm-4(15),7-dien-1β-ol (2). This study represents the first report of these compounds not only from D. gaudichaudianum but also from the genus Dysoxylum. The cytotoxic potential of two sesquiterpenoids was assessed against human cervical carcinoma (HeLa) cells employing the Resazurin-based PrestoBlue assay. Using cisplatin as a positive control, compound 1 exhibited moderate cytotoxicity with an IC₅₀ of 28.04 µM, whereas compound 2 showed comparatively weaker activity, with an IC₅₀ of 58.37 µM. Their structures were elucidated through comprehensive spectroscopic analyses, including HR-ESI-MS, ¹H NMR, and ¹³C NMR. Structure–activity relationship analysis indicates that hydroxylation at C-6 enhances cytotoxic activity, whereas the C-6/C-7 olefinic moiety reduces potency, likely due to increased molecular rigidity, highlighting key structural features for activity modulation in the eudesmane scaffold.
Potential Antidiabetic Activity of Annona muricata Leaves as Enzyme α-amylase Inhibitor: In Silico Study Zahra Putri Handirana; Tresna Lestari; Richa Mardianingrum; Ruswanto Ruswanto
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 12, No. 1, May 2026
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v12i1.46091

Abstract

Diabetes mellitus is a prevalent metabolic disorder requiring effective and safe therapeutic approaches. Natural compounds have gained attention as potential alternatives to synthetic drugs such as acarbose, which may cause adverse effects. This study aimed to evaluate the antidiabetic potential of secondary metabolites from Annona muricata leaves as α-amylase inhibitors using an in-silico approach. Molecular docking (PyRx), molecular dynamics simulation (Desmond, 100 ns), and ADMET prediction were performed to assess binding affinity, stability, and drug-likeness properties. Among the tested compounds, three lead compounds exhibited the strongest binding affinity: coclaurine (-9.25 kcal/mol), (+)(-) Xylopine (-8.94 kcal/mol), and annomuricine (-8.82 kcal/mol) compared to acarbose (-4.95 kcal/mol). Molecular dynamics analysis demonstrated annomuricine was the most stable interaction with key catalytic residues (Asp197, Glu233, and Asp300). Additionally,annomuricine satisfied Lipinski’s Rule of Five and showed favorable pharmacokinetic profiles, although it interacted with CYP enzymes. In conclusion, annomuricine demonstrates strong potential as a natural α-amylase inhibitor and may serve as a promising candidate for antidiabetic drug development. However, further in vitro and in vivo studies are required to validate these findings.
Copper-Supported Crosslinked Chitosan–Glutaraldehyde/Zinc Oxide: Interfacial Structure, Cyclic Voltammetric Behavior, and Reproducibility Anceu Murniati; Restu Muchammad Ibrahim; Intan Mulya Ewangga; Rolan Rusli
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 12, No. 1, May 2026
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v12i1.46454

Abstract

Chitosan-based nanocomposite coatings are promising low-cost electrochemical materials, but the relationship between interfacial structure and voltammetric performance remains insufficiently understood. This study investigated the cyclic voltammetric behavior, reproducibility, and cycling stability of a copper-supported crosslinked chitosan–glutaraldehyde/zinc oxide coating. Structural and electrochemical characterization was performed using Fourier transform infrared spectroscopy, scanning electron microscopy/energy-dispersive X-ray spectroscopy, and cyclic voltammetry in 0.1 M phosphate-buffered saline and 0.01 M K₃[Fe(CN)₆]/0.10 M KCl. The coating showed Schiff-base crosslinking, Zn-related interactions, compact morphology, good attachment to copper, and distributed Zn-containing domains without obvious large-scale agglomeration. Electrochemically, the coating exhibited quasi-reversible behavior in both media. Ferricyanide produced sharper redox features, current ratios closer to unity, and stronger anodic linearity with the square root of scan rate than phosphate-buffered saline. The apparent diffusion coefficient estimated from the ferricyanide anodic response was on the order of 10⁻⁵–10⁻⁶ cm² s⁻¹. Reproducibility across ten independently prepared electrodes was acceptable, with lower variability in ferricyanide than in phosphate-buffered saline, and the voltammetric profile was retained over 15 cycles. These results demonstrate a stable and reasonably reproducible electrochemical interface with potential for future sensing applications.
Synthesis of 3-(4-Hydroxy-3-Methoxyphenyl)-1-(2-Hydroxyphenyl)-Propenone as a Colorimetric Chemosensor for Hydrogen Phosphate Anions Arfiani Nur; Bambang Purwono; Herlina Rasyid; Ummi Zahra; Aisyah Aisyah; Artati Artati; Andi N. Fitriani; Fadliah Fadliah; M. Yasser; Muharram Muharram; Paulina Taba; Indah Raya; Abdul W. Wahab; Nunuk H. Soekamto
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 12, No. 1, May 2026
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v12i1.46467

Abstract

Hydrogen phosphate is an important anion in environmental and biological systems; however, its excessive presence in water can contribute to eutrophication and water quality degradation. The synthesis and application of 3-(4-hydroxy-3-methoxyphenyl)-1-(2-hydroxyphenyl)-propenone (HMPP) as a colorimetric chemosensor for hydrogen phosphate (HPO₄²⁻) anions have been investigated. HMPP was synthesized via Claisen–Schmidt condensation of vanillin and 2-hydroxyacetophenone, obtained in 34% yield of the target compound. The colorimetric response of HMPP was evaluated toward various anions, including F⁻, Cl⁻, Br⁻, CN⁻, HPO₄²⁻, and CO₃²⁻. The results showed that HMPP exhibited a distinct response toward HPO₄²⁻; however, the presence of other anions caused varying degrees of interference, with CO₃²⁻ showing minimal effect, while Cl⁻, CN⁻, and Br⁻ reduced the response to a greater extent. This behavior is attributed to hydrogen-bonding interactions between HMPP and HPO₄²⁻, which enhance intramolecular charge transfer (ICT). The applicability of HMPP was further evaluated in spiked tap water samples, demonstrating satisfactory recovery in the range of 105.47–107.50%, indicating acceptable accuracy and reliability. Therefore, HMPP demonstrates potential as a colorimetric chemosensor for hydrogen phosphate anions in water samples.
Chemometric Analysis for Heavy Metal Pollution Assessment of Beach Sediments in Balongan, Indramayu Andi Budi Bakti; Muhammad Yudhistira Azis
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 12, No. 1, May 2026
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v12i1.46477

Abstract

Balongan is a coastal area whose waters are vulnerable to contamination heavy metals due to anthropogenic activities, particularly oil refinery operations. This study aimed to (1) characterize the physicochemical properties and quantify heavy metal concentrations in sediments from Balongan; (2) identify the contamination level, sources, spatial distribution, and ecological risk; and (3) analyze inter-parameter relationships, site similarities, and dominant factors controlling contamination pattern variability using a chemometric approach. Sampling was conducted in May 2025, and heavy metal analysis was performed using F-AAS. The results showed that the concentrations of Pb, Cu, Zn, and Cr remained within safe limits, whereas Cd and Ni exceeded the threshold values. Cd was predominantly attributed to anthropogenic sources (CF>6), whereas Ni was mainly attributed to natural processes (CF<1). Although still below threshold values, Pb, Cu, Zn, and Ni concentrations were higher at sites closer to the oil refinery, suggesting influences from oil-related activities. Elevated Cd and Ni concentrations were the primary contributors to sediment toxicity, with PERI values ranging from moderate to severe. The clay fraction and organic matter showed positive correlations with heavy metals. Thus, the dominant factors controlling the variability of contamination patterns are the similarity of pollution sources and sediment physicochemical properties.
Isolation, Characterization, and Identification of Root-Associated Endophytic Bacteria Producing Chitinase from Strawberry Plants Nur Aulia; Hasnah Natsir; Ahyar Ahmad; Nunuk Hariani Soekamto; Abd. Wahid Wahab; Rugaiyah Andi Arfah; Harningsih Karim
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 12, No. 1, May 2026
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v12i1.46618

Abstract

Endophytic bacteria inhabiting root tissues represent a promising resource for biotechnological applications, particularly as chitinase producers for biological control. This study aimed to isolate, characterize, and identify chitinase-producing endophytic bacteria from strawberry (Fragaria spp.) roots. Root samples underwent a surface sterilization process and serial dilutions before being planted on selective media with a chitin colloidal substrate. They were then characterized morphologically and identified molecularly through analysis of the 16S rRNA gene. The results of the initial screening using agar medium with chitin colloidal substrate at a temperature of 37 °C yielded four bacterial isolates. Two of the bacterial isolates showed high chitinolytic index (CI), where isolate RS-A1 had a CI (1.55) and isolate RS-A2 had a CI (1.65). The electrophoresis of the 16S rRNA PCR product showed an amplicon of approximately 1300 bp. BLAST analysis against GenBank showed that isolate RS-A1 had 98.06% similarity to Acinetobacter baumannii, whereas isolate RS-A2 had 97.21% similarity to Bacillus aerius. The quantitative result of specific chitinase activity was highest in the RS-A2 isolate at 0.01146 U/mg, while that of the RS-A1 isolate was 0.00781 U/mg. These results indicate that endophytic bacteria from strawberry plant roots have the potential to act as biocontrol agents. 

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