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Fullerene Journal of Chemistry
Published by Universitas Negeri Manado
ISSN : 25981269     EISSN : 25985868     DOI : -
Core Subject : Science,
Chemistry
Fullerene Journal Of Chemistry is an chemistry indonesian journal presented by chemistry department, State University of Manado.
Arjuna Subject : -
Articles 168 Documents
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Analisis Kandungan Merkuri Pada Air Sungai Ongkag Mopusi Di Desa Tanoyan Selatan Mengunakan AAS Mokoginta, Meki; Pongoh, Emma; Saiya, Abdon
Jurnal Kimia Fullerene Vol 11 No 1: Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Environmental pollution relates to exposure to pollutants that disrupt the natural environment and can affect living things in the environment. One of the most dominant pollutants in the mining business is heavy metals such as mercury (Hg) which is classified as a hazardous toxic material. The purpose of this study was to measure the levels of mercury (Hg) contained in samples of Ongkag Mopusi River water in South Tanoyan village using AAS. Based on the results of research on Ongkag Mopusi river water samples in South Tanoyan Village using Atomic Absorption Spectrophhotometer (AAS), the lowest Hg exposure was obtained at point B3 of 0.00002 ppm and the largest at 0.0001 ppm. from these results it is concluded that Ongkag Mopusi river water in South Tanoyan Village is still in accordance with the quality standards set by Government Regulation No. 82 of 2001 concerning Water Quality Management and Pollution Control, where the allowable mercury threshold for category I water is 0.001 mg/L.
Design and Construction of A Pyrolysis Device for Laboratory- scale Liquid Smoke Production Applications Jannah, Miftahul; Saiya, Abdon; Karundeng, Marlina; Tengkar, Soenandar; Kamaruddin, Kamaruddin; Mustapa, Mustapa
Jurnal Kimia Fullerene Vol 10 No 1 (2025): Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v10i1.781

Abstract

Liquid smoke has been widely applied in various fields. Several studies have developed methods, tools and materials for making liquid smoke. This research aims to design a tool for making liquid smoke using a simple pyrolysis method on a laboratory scale. The goal is that this tool can be used by students for practicums to further increase students' insight and skills regarding liquid smoke. The stages of this research start from literature study, technology design, tool fabrication and testing as well as the evaluation stage. The results obtained in this research are that a liquid smoke pyrolysis device has been successfully made with a capacity of 6 kg. Based on the test results, grade 3 liquid smoke was produced.
Implications of Preliminary Treatment Using Effective Microorganisms on the Chemical Composition of Daluga Starch Processing Waste (Cyrtosperma merkusii) Moko, Emma Mauren; Rawung, Livana Dethris; Rahardiyan, Dino; Lihiang, Anatje; Wantania, Johana Zusye; Ngangi, Crescentia Mishi
Jurnal Kimia Fullerene Vol 11 No 1: Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v11i1.749

Abstract

Daluga (Cyrtosperma merkusii) starch processing yields waste with 70% of its total weight consist of organic biomass materials that can be utilized as advanced composite biomass materials, a potential base for reinforcing materials. Processing the Daluga waste (debris) requires stages of pretreatment and activations to eliminate inhibiting agents within the hydrolisis process (fermentation process). The purpose of this research is to understand the effects of biological pretreatments using the Effective Microorganism (EM4) bacterial consortium towards the chemical properties of Daluga debris. The chemical compositions of debris Daluga before and after each treatment were determined by NDF and Van Soest method for observing the cellulose, hemicellulose, lignin, fiber, ash content, crude protein, silicate and crude fat. These parameters were analysed following the methods outlined in the Indonesian National Standard (SNI 01-2891-1992) and while protein and carbohydrate content was measured with the Dumas combustion method. Results indicated that lignin concentration after delignification process decreased considerably to 1.80 ± 0.07% although lignin content of these Daluga debris initially wasn’t so high to begin with 4.11 ± 0.02%. Herewith, hemicellulose also decreased giving an appearance for the increase and exposure of cellulose. Thus, providing a clear path to further processing the cellulose to advance cellulosic materials such as cellulose nano crystals (CNC).
Fractionation, Purification, and Toxicity of Methanolic Cacao Pod Husk Extract (Theobroma cacao L.) Purnama, Agnia; Yahya, Mustanir; Ginting, Binawati; Saidi, Nurdin; Afifi, Muhammad Ridha; Maghfirah, Ruhul; Farida, Mutia; Ikhsan, Ikhsan
Jurnal Kimia Fullerene Vol 11 No 2: Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v11i2.772

Abstract

Cacao (Theobroma cacao, L.) is a plantation product that has good prospects, but its processing produces a by-product in the form of cacao pod husks that have not been optimally utilized. This study aims to analyze the toxicity of methanol extracts, fractions, and subfractions of cacao pod husks using the Brine shrimp lethality test (BSLT) assay, and to purify active compounds using gravity column chromatography and thin-layer chromatography (TLC). The fractionation process of the methanol extract produced 5 fractions and 4 subfractions. The results of the toxicity analysis showed that the TCM 2 fraction and the TCM 2.1 subfraction had the highest toxicity, with IC₅₀ values of 38.68 ppm and 28.85 ppm, respectively. Further purification process produced a single isolate identified as a terpenoid compound. The results of this study indicate that cacao pod husks have the potential to serve as a natural source of toxicity and can be developed for use in the pharmaceutical field.
Total Synthesis and Potential Bioactivity of Linear Peptide LSAVTPG Aloanis, Anderson Arnold; Paat, Vlagia Indira; Duengo, Suleman
Jurnal Kimia Fullerene Vol 11 No 2: Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v11i2.790

Abstract

The total synthesis of the linear peptide LSAVTPG was successfully carried out using the solid-phase peptide synthesis (SPPS) method. The synthesis employed the Fmoc/tBu protection strategy on a 2-chlorotrityl chloride resin as the solid support. Following chain assembly, the final peptide was cleaved from the resin using 95% trifluoroacetic acid (TFA), affording the target peptide with a yield of 81.6%. Structural confirmation was performed by high-resolution mass spectrometry (HRMS), which showed an observed ion at m/z 644.3621, consistent with the calculated value of m/z 644.3619 for C₂₈H₅₀N₇O₁₀. Purity and retention characteristics were further analyzed using analytical HPLC, where the peptide exhibited a retention time of 13.536 minutes. These results demonstrate that the SPPS method with Fmoc/tBu chemistry is an efficient strategy for the synthesis of the LSAVTPG peptide with high yield and analytical confirmation. The potential bioactivity screened computationally and showed some potential such as spanning oncology, cardiometabolic regulation, neurodegeneration, immunology, and inflammation.
Effect of Activated Carbon on the Combustion Characteristics of Magnesium–Sodium Nitrate Propellants Murniati, Anceu; Hardian, Arie; Arifin, Zellin Azsari; Suharnoko, Suharnoko; Gunawan, Adella Fajaretta; Aprillianti, Ranti Nur
Jurnal Kimia Fullerene Vol 11 No 2: Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v11i2.774

Abstract

Magnesium–nitrate-based propellant systems represent an alternative class of solid propellants whose combustion characteristics can be modified through composition and the use of additives. This study aims to evaluate the effect of activated carbon addition on the burning rate and combustion energy of magnesium–sodium nitrate– based propellants. Propellant samples were prepared in two compositional variations, namely NaNO₃/Mg and NaNO₃/Mg with activated carbon addition. The burning rate was measured experimentally with five replicates (n = 5), while the calorific value was determined using a bomb calorimeter. Differences in burning rate were analyzed using Welch’s t-test at a significance level of α = 0.05. The results show that the addition of activated carbon significantly reduces the burning rate of the propellant (p < 0.001). In contrast, the calorific value increased from 2395 cal g -1 to 2617 cal g -1 . These findings indicate that activated carbon modifies the combustion characteristics and contributes to the energetic properties of the system, suggesting its potential application for burning rate control in magnesium–sodium nitrate–based propellants.
The Isolation and Identification of Bacteria with Potential for Mercury (Hg) Bioremediation from the Kahayan River Chu, Chuchita; Pereiz, Zimon; Nafisah, Zahrotun; Oksal, Efriyana; Sylvani, Miranti Maya; Irawan, Ahmad; Alfi, Febrianto
Jurnal Kimia Fullerene Vol 11 No 2: Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v11i2.795

Abstract

The Kahayan River in Central Kalimantan is one of the waterways utilized for traditional gold mining that employs amalgamation techniques. The application of this method poses a significant risk of environmental pollution and degradation. This study was conducted to evaluate the capacity of bacteria to act as bioremediation agents for mercury (Hg) at different concentrations. The methodology involved inoculating sediment samples into Zobell 2216E medium, isolating and purifying bacterial colonies on Nutrient Agar (NA), followed by bacterial identification and assessment of mercury degradation using an Atomic Absorption Spectrophotometer (AAS). The findings revealed that isolate 34 was able to remove 132.73 ppm of Hg from an initial concentration of 250 ppm (equivalent to a 53.09% reduction), whereas isolate 108 removed 139.68 ppm, corresponding to a 55.87% reduction.
Purification and Preliminary Characterization of Biopigments From Nitzschia closterium Asfarina, Hasti; Purnaningtyas, Dayu Wiyanti
Jurnal Kimia Fullerene Vol 11 No 1: Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v11i1.757

Abstract

Biopigments are important bio-based compounds used in food, pharmaceutical, and cosmetic industries. Nitzschia closterium, a marine diatom microalga, is known for its potential to produce various pigments. This study aimed to purify and preliminarily characterize biopigments extracted from Nitzschia closterium. The research involved microalgal biomass cultivation, harvesting, pigment extraction, preliminary identification using thin-layer chromatography (TLC), and purification through column chromatography. After six days of cultivation, the average biomass density reached 1.67 g/L. TLC analysis of the crude pigment extract showed nine distinct pigment bands. Chromatographic purification and comparison with the TLC profile indicated four major pigment groups. Fractions 16 and 17 were predicted to be β-carotene (band 9); fractions 18 and 19 likely represented pheophytins (band 8); fractions 20 to 30 contained chlorophylls and their derivatives (bands 5–7); and fractions 31 to 45 showed orange-yellow hues associated with xanthophyll-type carotenoids (bands 2–4). These results demonstrate that Nitzschia closterium is a promising natural source of multiple biopigments, and that TLC and column chromatography effectively supported their purification and initial characterization.

Page 17 of 17 | Total Record : 168

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