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INDONESIA
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)
Published by Universitas Sriwijaya
ISSN : 25409395     EISSN : 25409409     DOI : -
Core Subject : Science, Social,
Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science
Indonesian Journal of Fundamental and Applied Chemistry (IJFAC) is an international research journal and invites contributions of original research articles as well as review articles in several areas of chemistry. The journal aims to publish refereed, high-quality research papers with significant novelty and short communications in all branches of chemistry. Papers which describe novel theory and its application to practice are welcome, as are those which illustrate the transfer of techniques from other disciplines. IJFAC calls for papers that cover the following fields: Biochemistry Inorganic chemistry Physical chemistry Organic chemistry Analytical chemistry Applied Chemistry All papers are peer reviewed by at least two referees. Papers presented at conferences are peer reviewed and selected with the same standards as individually submitted papers. They therefore have the same archival value. Article should be submitted by the Online Submission Module at www.ijfac.unsri.ac.id or email to ijfac@unsri.ac.id
Arjuna Subject : -
Articles 8 Documents
 1 
Search results for , issue "Vol 8, No 2 (2023): June 2023" : 8 Documents clear
Analysis of Lead (Pb) and Cadmium (Cd) in Oyster Crassostrea gigas and Saccostrea cucullata using Atomic Absorption and Ultraviolet-Visible Spectrophotometer Methods Lelifajri Lelifajri; Salsabila Salsabila; Khairi Suhud
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 2 (2023): June 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i2.55

Abstract

Lead (Pb) and Cadmium (Cd) metals are highly toxic when accumulated in the body and cause serious diseases and even death. This study aimed to determine the metal content of Pb and Cd in the oyster species Crassostrea gigas and Saccostrea cucullate in the Lampulo and Krueng Cut areas at three different places. Analysis of the metals was carried out using AAS and UV-Visible spectrophotometers. Samples were prepared using concentrated HNO3 wet destruction and the addition of dithizone. The results showed Pb measured by AAS in Saccostrea cucullata 2.33-8.00 ppb, and by UV-Vis 2.77-8.66 ppb. Pb within Crassostrea gigas by AAS method 1.77-10.30 ppb, and by UV-Vis method 2.11-10.66 ppb. The Cd metal measured by AAS in Saccostrea cucullate is 3.80-10.50 ppb, and by UV-Vis method is 4.29-10.77 ppb, whereas Cd in Crassostrea gigas measured by AAS is 12.11-13.22 ppb and by UV-Vis method is 12.77-13.66 ppb. Linearity of Pb measurements with AAS and UV-Vis was obtained R2 =0.9979 and R2 =0.9938 and for Cd were R2 =0.9986 and R2 =0.9810. Accuracy (%recorvery) of Pb measurements by AAS and UV-Vis are 80-110% and 98-113% whereas Cd showed 100-106% and 91-107% respectively. The relative value of the standard deviation (%RSD ± SD) is 0.001 indicating excellent measurement results. Based on t-test calculations, measurements of Pb and Cd levels showed no difference between the AAS method and the UV-Vis method
Flavonoid as Anti-Candida Agents Susilawati Susilawati; Chairil Anwar; Irsan Saleh; Salni Salni
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 2 (2023): June 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i2.88

Abstract

Vulvovaginal candidiasis is the second most common cause of vaginitis after bacterial vaginosis with at least 75 – 80% of women have had one episode of VVC in their lifetime. Their prevalent resistance to most commonly used antifungal agents makes their treatment a challenge to physicians. Flavonoids have been shown to possess potent anti-Candida properties which can inhibit the growth and proliferation of Candida species through various mechanisms, including inhibition of fungal cell wall synthesis, disruption of fungal cell membrane integrity, and interference with fungal cell signaling pathways. Their potency makes them potential candidates for the development of antifungal agents for the treatment of candidiasis, alone or in combination with existing antifungal drugs. The review aims to explore the mechanisms by which flavonoids inhibit the growth and proliferation of Candida species, including the inhibition of fungal cell wall synthesis, disruption of fungal cell membrane integrity, and interference with fungal cell signaling pathways.
Antibacterial Compound from n-Hexane Fraction of Dillenia ochreata Leaves Heni Yohandini; Muharni Muharni; Putra Setia Aji Candra
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 2 (2023): June 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i2.63

Abstract

Semprawang (Dillenia ochreata) belongs to the Dilleniaceae family that has been used by the Musi tribe, Banyuasin, South Sumatra, for scurvy medicine. This study aims to isolate secondary metabolites from D. ochreata leaves n-hexane extract and test their antibacterial activity against Escherichia coli and Staphylococcus aureus. The D. ochreata leaves were extracted through the maceration method with n-hexane solvent, and the isolated compounds were purified using column chromatography. The isolated compounds were analyzed using FT-IR, 1H-NMR, and 13C-NMR spectroscopy and compared the spectroscopic data with the literature. The antibacterial activity was determined against the E. coli and S. aureus bacteria with the disc diffusion method and MIC value was determined by the microdilution method. Based on the analysis of the spectroscopic data and compared with literature data, it is suggested that the isolated compounds are 3β-glucopyranosyl-lup-20(29)-en-28-oic, which mixes with aromatic compound. The isolated compounds showed antibacterial activity with a minimum inhibitory concentration (MIC) to E. coli at 120 µg/mL and S. aureus at 60 µg/mL
Preparation of Zirconium Nitride supported on SiO2 Catalyst for Vegetable Oil Conversion Wan Ryan Asri; Hasanudin Hasanudin; Karna Wijaya
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 2 (2023): June 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i2.98

Abstract

Hydrocracking of crude palm oil (CPO) to produce biofuels was conducted over zirconium nitride supported on SiO2 (SiO2/ZrN) catalyst. SiO2/ZrN was prepared by nitriding the SiO2/Zr at 600 °C for 3 hrs under NH3 gas on the cylindrical reactor. SiO2/ZrN exhibited a surface acidity of 0.7132 mmol pyridine g‒1 with a surface area of 96 m2 g‒1, forming predominant mesopores on the catalyst. EDS-mapping analysis showed that the ZrN species exhibited a highly distributed on the SiO2 surface. CPO hydrocracking was conducted at a temperature of 500 °C for 1 hr, with a CPO flow rate of 0.02 L min‒1 and H2 flow rate of 0.03 L min‒1. The study revealed that the SiO2/ZrN successfully afforded a CPO conversion up to 94.98 wt.%, a liquid yield of 50.40 wt.%, with a low residue and coke formation. This catalyst promoted high selectivity towards bio-jet up to 72.95 wt.%.
Coumarin Derivative from the Unripe Fruit of Mengkudu (Morinda citrifolia Linn) and Cytotoxic Activity Ferlinahayati Ferlinahayati; Sarifatun Nisa; Hermansyah Hermansyah; Dasril Basir
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 2 (2023): June 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i2.70

Abstract

A coumarin derivative namely scopoletin (7-hydroxy-6-methoxychromen-2-one) had been isolated from the methanol extract of unripe noni fruits (Morinda citrifolia Linn.). The extraction was conducted by maceration, continuing with separation and purification using several techniques of chromatography. The yellowish isolated compound showed a melting point at 200 – 202 °C. The compound structure was analyzed based on spectral data 1H-NMR, 13C-NMR, and NOE 1D. The inhibition of methanol extract of noni fruits and scopoletin against murine leukemia P388 cells using MTT assay showed IC50 were > 100 μg/mL and 65.69 μg/mL respectively. These showed that scopoletin was more cytotoxic than methanol extract but weaker than artonin E as a positive control IC50 0.48 μg/mL)
Preconcentration of Cr(III) Using Dowex 50WX2-200 Resin and Its Application to River Water Siti Nuraini; Suheryanto Suheryanto; Poedji Loekitowati Hariani
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 2 (2023): June 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i2.105

Abstract

Cr(III) is one of the most stable chromium species in nature, Cr(III) species are not carcinogenic to humans, but if the levels in the body exceed 0.2 mg / day it is very dangerous for the body especially in the respiratory tract. The presence of chromium in the aquatic environment is so low that it is very difficult to detect it using instruments with various limitations to detect it, therefore preconcentration techniques are carried out to overcome the issue. In this study the water sample was adjusted pH using HNO3 0.1 M or NaOH 0.1 M, after which it was passed in the dowex column 50WX2-200. Furthermore, an elution process was carried out using the 1 M HNO3 eluent, the eluat was measured for absorbance with flame AAS. The results of Cr(III) preconcentration optimization are: resin weight 0.5 g, HNO3 eluent concentration 1 M, solution pH 3 and sample volume 50 – 100 mL. The Cr(III) preconcentration technique using Dowex 50WX2-200 resin has been applied to river water samples with a detectable concentration of 0.0075 mg/L.
Study of Boron Complexation with Pyridoxine: Effect of Interaction Time, Temperature, and Amount of Pyridoxine Nurlisa Hidayati; Ariqah Fianti; Mita Arnela
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 2 (2023): June 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i2.76

Abstract

Borax is one of the compounds of boron (B), which is widely used as an anti-fungal, wood preservative, and antiseptic in cosmetics. Boron can form complexes with biomolecules such as pyridoxine, so it is interesting to know the interaction between borax and pyridoxine. This study seeks to investigate the complexation of boron, which is obtained from borax, with pyridoxine under various conditions of time, temperature, and the amount of pyridoxine. The resulting complex was characterized by UV-Vis spectrophotometry, Fourier Transform Infrared (FT-IR), and X-Ray diffraction (XRD). The study was initiated by optimizing the complexation of boron and pyridoxine. The maximum wavelengths of pyridoxine were found in the 205 nm and 292 nm regions, while the boron-pyridoxine complex was found in the 237 nm region. The obtained contact time, temperature, and amount of pyridoxine are 40 minutes, 60 °C, and 2 mL respectively. The results of the Fourier transform infrared (FT-IR) analysis of the boron-pyridoxine complex showed that there were OH groups, aromatic C=C groups, aliphatic C-C groups, B-H groups, and B-O groups. The results of the XRD analysis of the boron-pyridoxine complex obtained a diffraction angle of 30.93°.
Synthesis and Characterization of Cellulose Acetate from α-Cellulose of Paper Waste Ristika O Asriza; Nurhadini Nurhadini; Fardhan Arkan
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 2 (2023): June 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i2.82

Abstract

A cellulose derivative substance called cellulose acetate is frequently used in the manufacturing of photographic film, fiber, membranes, and bioplastics. However, the availability of sources for cellulose acetate's raw material does not support this demand. Paper waste has a high cellulose content. Therefore, the aim of this research is to synthesize cellulose acetate from α-cellulose waste paper. In order to separate alpha cellulose from waste paper in this study, the delignification process with NaOH solvent was used as a first step. After obtaining alpha cellulose, acetic anhydride was used to carry out the acetylation reaction. The yield of α-cellulose from paper waste is 51.8%. α-Cellulose is reacted with acetic anhydride through acetylation reactions and hydrolysis of acetyl groups. From this reaction, functional groups -OH, C=O ester, and C-O acetyl appeared from the FTIR spectra analysis which indicated that cellulose acetate had been successfully synthesized. The type of cellulose acetate produced is a type of cellulose monoacetate with an acetyl groups of 23% and a degree of substitution value of 1.17.

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