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All Journal IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Science and Technology Indonesia Indonesian Journal of Chemistry
Alfarado, Daniel
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Materials Science & Nanotechnology Physics

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Bioactivity of Endophytic Fungi Isolates from Syzygium malaccense Twigs Hapida, Yustina; Widjajanti, Hary; Salni; Habisukan, Ummi Hiras; Alfarado, Daniel; Elfita
Science and Technology Indonesia Vol. 9 No. 2 (2024): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.2.448-456

Abstract

Searching for medicinal raw materials derived from the isolation of secondary metabolite compounds is still being carried out to cure a range of illnesses, including infections and degenerative diseases caused by bacteria and free radicals. This research used endophytic fungi extract from the twig of Syzygium malaccense. The diffusion method was used for antibacterial activity and 2,2-diphenyl-1-picrylhydrazyl (DPPH) was used for antioxidant activity. Chemical compound was identified by using NMR spectroscopic method. This research found 5 isolate of endophytic fungi from twig of S. malaccense (YR1 – YR5). Strong antibacterial and antioxidant activity were showed by YR5. Based on molecular identification, YR5 was Fusarium verticillioides. Pure compound prodeced by endophytic fungi F. verticilloides was naphthalene (3-methoxy-7 methylnaphthalene-1,6-diol). This finding can be used as a basis for drug development.
Adsorption Study on Phenol from Bentonite doped with Zinc oxide: Synthetis, Characterization, Equilibrium, Kinetics, and Thermodynamic Desnelli, Desnelli; Rizkiani, Delisa; Alfarado, Daniel; Ferlinahayati, Ferlinahayati; Yohandini, Heni; Fatma, Fatma; Mara, Ady; Suheryanto, Suheryanto; Nurnawati, Elisa; Hamidah, Afreni; Said, Muhammad
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 9, No 2 (2024): June 2024
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v9.i2.82

Abstract

This study modified current bentonite with zinc oxide (ZnO) and investigated the performance of phenol adsorption. The material bentonite-ZnO was successfully synthesized and characterized with X-ray diffraction (XRD), scanning electron microscopy-energy dispersive X-ray (SEM-EDX), and Fourier transform infrared (FT-IR). The adsorption performance was determined by adsorption equilibrium, kinetics, and thermodynamic parameters. The adsorption, kinetic, and thermodynamic parameters were compared alternatively. The phenol adsorption capacity was obtained from Langmuir and Freundlich adsorption isotherm models, which for bentonite-ZnO was fit with both isotherm models (Langmuir R2 = 0,997 and Freundlich R2 = 0,9515) and was favorable than activated bentonite (n value bentonite-ZnO = 2.389; activated bentonite = 0,898). A kinetic model was tested with pseudo-first-order, pseudo-second-order, and intraparticle diffusion models which bentonite-ZnO and activated bentonite fit in the pseudo-second-order with an excellent agreement (R2 = 0,999). Several thermodynamic parameters such as enthalpy, Gibbs free energy, and bentonite-ZnO have an entropy more than zero (ΔS = 0.008 J/molK), which demonstrated the feasibility and spontaneity (ΔG < 0) and endothermic nature (ΔH = 3,056 kJ/mol) of the phenol adsorption process. Several thermodynamic parameters such as enthalpy, Gibbs free energy, and bentonite-ZnO have an entropy more than zero (ΔS = 0.008 J/molK), which demonstrated the feasibility and spontaneity (ΔG < 0) and endothermic nature (ΔH = 3,056 kJ/mol) of the phenol adsorption process. Based on the result data in this article, modified bentonite with ZnO has increased the ability for phenol adsorption than currently activated bentoniteKeywords: bentonite, adsorption equilibrium, adsorption kinetics, thermodynamics model, phenol, bentonite-ZnO
Study of Potential α-Glucosidase Inhibitor from Tithonia diversifolia: In Vitro, Pharmacokinetics, Toxicology, and Molecular Docking Alfarado, Daniel; Shiyan, Shaum; Ferlinahayati, Ferlinahayati
Indonesian Journal of Chemistry Vol 25, No 2 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.103111

Abstract

The kipahit plant (Tithonia diversifolia) is commonly used in traditional medicine to treat various diseases, particularly diabetes. Investigating the bioactive compounds of T. diversifolia as α-glucosidase enzyme inhibitors is very promising to be carried out for antidiabetic drug development. A combination of in vitro and in silico studies was conducted to determine the inhibitory interaction of these compounds. In vitro assay was performed using the spectrophotometry method on methanol extracts and revealed that the stems (IC50 = 105.0 ppm) exhibited higher bioactivity than the leaves (IC50 > 500 ppm). Metabolite profiling of the methanol extract of the T. diversifolia stems revealed 94 compounds, which continued for in silico methods (pharmacokinetics and toxicology, followed by molecular docking with flexible-rigid method) for antidiabetic activity and drug-likeness parameters. Among the identified compounds, eight showed promise as drug candidates for inhibiting the α-glucosidase enzyme. The compound 1-(7-hydroxy-2-(hydroxymethyl)-2-methyl-2H-chromen-6-yl)ethanone was the most effective candidate among the eight candidates, based on its high similarity liked positive control, the lowest binding affinity value (−7.739 kcal/mol), and the inhibition constant (97.0 μM). The research findings suggested that the compounds in T. diversifolia had the potential to inhibit the α-glucosidase enzyme and could be developed into antidiabetic drugs.
Co-Authors Ady Mara, Ady Afreni Hamidah Desnelli Desnelli Elfita Elisa Nurnawati Fatma Ferlinahayati Ferlinahayati Hary Widjajanti Heni Yohandini MUHAMMAD SAID Rizkiani, Delisa Salni Shaum Shiyan Suheyanto Suheryanto Ummi Hiras Habisukan, Ummi Hiras Yustina Hapida, Yustina