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JOURNAL OF CHEMICAL NATURAL RESOURCES (JCNaR)
Published by TALENTA PUBLISHER
ISSN : -     EISSN : 26561492     DOI : https://doi.org/10.32734/jcnar.v4i1.9353
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology Chemistry Materials Science & Nanotechnology
Journal of Chemical Natural Resources (JCNaR) is a peer-reviewed biannual journal (February and August) published by TALENTA as an open access journal. The aim of the journal is to provide a medium to exchange ideas and information related to research and knowledge in disciplines of organic chemistry, biochemistry, analytical chemistry, inorganic chemistry and physical chemistry. The journal also receives systematic reviews, meta- analysis and review article on the new issues in the fields of chemistry and natural sciences. Submission to this journal implies that the manuscript has not been published or under consideration to be published in another journal.
Arjuna Subject : Kimia(semua kategori) - Kimia Organik
Articles 137 Documents
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Screening of Phytochemicals and Determination of Total Phenolic and Flavonoid Contents in Different Plant Parts of Kalanchoe ceratophylla Haw. Sovia Lenny; Alyssa Zahra Br Karo; Lamhot Parulian Manalu; Astuti
Journal of Chemical Natural Resources Vol. 7 No. 2 (2025): Journal of Chemical Natural Resources (JCNaR)
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v7i2.22964

Abstract

Kalanchoe ceratophylla Haw. is a medicinal plant traditionally used to address various health disorders. Its biological activities are believed to be associated with its secondary metabolites, particularly phenolics and flavonoids. Despite its traditional use, scientific information This study assesses the phytochemical composition alongside the total phenolic and flavonoid contents in the stem and leaf preparations of Kalanchoe ceratophylla Haw. Phytochemical screening confirmed the presence of alkaloids, flavonoids, tannins, and phenols in the stem extract, while the leaf extract also contained steroids. The total phenolic content was 7.43 mg GAE/100 g extract for stem and 7.11 mg GAE/100 g extract for leaves, whereas total flavonoids amounted to 0.324 mg QE/g extract (stem) and 1.621 mg QE/g extract (leaves). These findings highlight the potential use of K. ceratophylla, especially its leaves, for developing antioxidant-based herbal medicines.
Synthesis and Characterization of Amorphous Silica Nanoparticles Production from Indonesia Coal Fly Ash Yugo Chambioso; Ariadne Lakshmidevi Juwono; Amru Daulay
Journal of Chemical Natural Resources Vol. 7 No. 2 (2025): Journal of Chemical Natural Resources (JCNaR)
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v7i2.23383

Abstract

Coal fly ash an inexpensive waste material rich in silica, is reused as a renewable source and has attracted widespread attention. The sol-gel process was used to synthesize silica nanoparticles based on coal fly ash. Extraction of silica in the form of alkaline sodium silicate using alkali, followed by the formation of silica gel from the neutralization of alkaline sodium silicate with acid. The treated samples were calcined at 450 °C, 650 °C, and 850 °C. The chemical composition, morphology, phase, and silica functional groups of the as-synthesized silica nanoparticle powder were investigated using X-ray fluorescence (XRF), field emission scanning electron microscopy and Electron diffraction spectroscopy (FESEM-EDS), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). Infrared (IR) spectral analysis showed that silica had hydrogen-bonded silanol and siloxane groups. The silica nanoparticles' purity was found to be as high as 97% in their amorphous state, with XRD analysis indicating this due to the broad peak observed in the 20-23° two-theta region, characterised by a spherical shape and a tendency to aggregate into clusters.
Effectiveness of Several Bioactivators on the C/N Ratio and Potassium (K) and Manganese (Mn) Nutrition Content of Coffee Skin Compost (Coffea sp) Sri Pratiwi Aritonang; Efbertias Sitorus; Sri Rahayu; Hariyati Lubis; Ilfa Husna Pulungan
Journal of Chemical Natural Resources Vol. 8 No. 1 (2026): Journal of Chemical Natural Resources (JCNaR)
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v8i1.25576

Abstract

Coffee skin waste is an abundant agricultural byproduct that can be converted into compost to support sustainable waste management. This study aimed to determine the effectiveness of several bioactivators, namely EM-4, BioTRIBA, and M-Dec, on the C/N ratio and potassium (K) and manganese (Mn) content of coffee skin compost. The research used a completely randomized design with eight treatments and three replications: EM-4 at 10 mL/L, BioTRIBA at 8, 10, and 12 mL/L, and M-Dec at 8, 10, 12, and 14 g/L. Composting was carried out for four weeks, and the observed parameters included pH, temperature, C/N ratio, C-organic, N-total, K-total, Mn-total, and moisture content. The results showed that all treatments reduced the C/N ratio from an initial value of 13.69% to a range of 10.65%–12.16%. The lowest C/N ratio was obtained in the M-Dec 10 g treatment (10.89%), indicating the most effective decomposition process. Potassium content decreased from 5.01% to 3.84%–4.30%, while manganese content increased significantly from 0.01 mg/kg to 108.16–132.25 mg/kg across treatments. The highest Mn accumulation was observed in the M-Dec 8 g treatment (132.25 mg/kg). Among all treatments, M-Dec 10 g was identified as the most effective treatment based on the lowest C/N ratio and balanced nutrient profile, meeting compost quality standards (SNI 19-7030-2004). Overall, the use of bioactivators accelerated decomposition and improved the quality of coffee skin compost, and M-Dec 10 g was the most effective treatment for meeting compost quality standards.
Performance Evaluation of Reactivated Spent Bleaching Earth on Color Reduction of Crude Palm Oil Irvan Guntara Purba; Martomo Setyawan; Totok Eka Suharto
Journal of Chemical Natural Resources Vol. 7 No. 2 (2025): Journal of Chemical Natural Resources (JCNaR)
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v7i2.25586

Abstract

This study aims to evaluate the performance of reactivated Spent Bleaching Earth (SBE) in reducing the color of Crude Palm Oil (CPO). SBE was reactivated through chemical activation using HCl and H2SO4 in single, mixed, and sequential modes, followed by calcination at 600°C, producing Reactivated Spent Bleaching Earth (RSBE A–K) samples. The reactivated materials were characterized using Scanning Electron Microscopy (SEM) to evaluate their surface morphology before being applied to the CPO bleaching process and compared with fresh Bleaching Earth (BE). The results showed that the initial CPO color of 22.0/22.0 (red/yellow) was optimally reduced to 7.6/7.6 using RSBE I, outperforming fresh BE, which reduced the color to 11.0/11.0. RSBE I also exhibited the highest performance among all samples. SEM characterization showed that the reactivation process produced a cleaner surface morphology, supporting the improved adsorption performance of RSBE. These findings demonstrate the potential of reactivated SBE as an efficient and sustainable alternative adsorbent for the palm oil refining industry.
Comparative Adsorption of Copper Ion (Cu2+) onto Raw and NaOH-Modified Coal Fly Ash at Various Initial Concentrations Ilham Aswi Syaputra; Farrah Fadhillah Hanum; Aster Rahayu; Rimadina Sukmasuci Lestari
Journal of Chemical Natural Resources Vol. 7 No. 2 (2025): Journal of Chemical Natural Resources (JCNaR)
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v7i2.25935

Abstract

Coal fly ash, a voluminous industrial solid by-product generated during coal combustion in thermal power facilities, has garnered considerable scientific attention as a cost-efficient sorption material for eliminating heavy metal contaminants from industrial effluents. This study comparatively evaluates the adsorption performance of unmodified coal fly ash (FA) and NaOH-modified coal fly ash (FA-NaOH) for Cu²⁺ removal from synthetic wastewater using a batch system. Both adsorbents were characterized for moisture content and iodine adsorption capacity. Equilibrium sorption experiments were conducted across a Cu²⁺ initial concentration of 25–125 mg/L using 7.5 g of adsorbent in 200 mL solution at 500 rpm for 60 minutes at room temperature. Residual copper was analyzed by Atomic Absorption Spectrophotometry (AAS). The FA-NaOH consistently outperformed FA, achieving removal efficiencies between 83.01% and 99.98%, and a maximum adsorption capacity (qm) of 2.4325 mg/g compared to FA 2.3250 mg/g. The equilibrium data for adsorption aligned better with the Langmuir isotherm (R² = 0.9077), particularly for FA-NaOH, indicating monolayer adsorption at homogeneous active sites. These results collectively affirm that alkaline activation markedly amplifies the Cu²⁺ uptake capacity of coal fly ash, confirming NaOH-modified coal fly ash as an economically accessible and ecologically sound strategy for heavy metal removal in wastewater treatment.
Long-Term Ambient Storage and Retained Hypnotic–Sedative Activity of a Confiscated Mitragyna speciosa Specimen: A Forensic Chemical and Pharmacological Evaluation Supiyani; Sarah Salsabil
Journal of Chemical Natural Resources Vol. 7 No. 2 (2025): Journal of Chemical Natural Resources (JCNaR)
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v7i2.25976

Abstract

Mitragyna speciosa (kratom) is a Southeast Asian medicinal plant whose principal alkaloid, mitragynine, exhibits stimulant and sedative properties. Long-term preservation of bioactive constituents in stored plant material is a quality control concern. This study investigated alkaloid stability and pharmacological recoverability of M. speciosa leaf powder stored under ambient, uncontrolled conditions for over ten years following confiscation in 2016. Three extraction solvents, ethanol, acetone, and water–methanol, were employed and their phytochemical profiles compared by Thin-Layer Chromatography with iodoplatinate visualization and Gas Chromatography–Mass Spectrometry (GC–MS). Phytochemical screening revealed consistent presence of alkaloids, sterols, triterpenoids, fatty acids, terpenoids, phenolics, and nitrogen-containing heterocycles across all solvent systems. Acetone yielded the highest relative mitragynine content (8.52%) compared with ethanol (7.01%) and water–methanol (3.64%). Preserved pharmacological activity of the acetone extract was confirmed in vivo using the glass cylinder escape latency test in male mice (Mus musculus), demonstrating a statistically significant, concentration-dependent hypnotic–sedative effect across doses of 4.5–114 mg/kg. One-way ANOVA with Tukey's HSD and Duncan's post hoc tests revealed statistically significant differences among treatment groups (p < 0.001). Within the limitations of this single-specimen evaluation, findings indicate that a detectable alkaloid profile and measurable hypnotic–sedative activity of M. speciosa are retained over extended ambient storage, with solvent selection influencing relative mitragynine recovery; absolute quantification and comparison with a fresh reference specimen were not possible and are recommended. This study provides reference data for forensic evaluation of aged kratom specimens and underscores the need for standardized storage and quality control protocols for kratom preparations.
Optimizing CCR Platforming Conditions for Platformate Quality Hersa Rizki Rahkmatullah; Martomo Setyawan; Siti Jamilatun
Journal of Chemical Natural Resources Vol. 7 No. 2 (2025): Journal of Chemical Natural Resources (JCNaR)
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v7i2.26716

Abstract

The CCR Platforming unit converts hydrotreated naphtha into platformate as a high-octane gasoline blending component. This study evaluates the effects of reactor temperature and catalyst circulation rate on platformate quality, represented by Research Octane Number (RON), and coke tendency, represented by carbon spent. Operating and laboratory data from reactor section 14-R-601/602/603 were grouped at average temperatures of 510, 515, and 520°C with catalyst rates of 60% and 65%. The variables were processed using average data analysis, graphical interpretation, multiple linear regression, and validation against laboratory RON with a maximum allowable error of 5%. The condition of 520°C at 60% catalyst rate produced the best platformate quality, with average RON of 100.00, but carbon spent was relatively high at 6.207 wt%. Increasing the catalyst rate to 65% at 510°C improved the frequency of RON ≥ 100; however, at 515 and 520°C the RON did not increase significantly because higher feed flow increased reaction load and coke formation. Model validation gave a MAPE of 0.481% and maximum error of 1.751%. These results indicate that CCR Platforming optimization requires balancing RON target, feed load, catalyst circulation, coke formation, and regeneration effectiveness.

Page 14 of 14 | Total Record : 137

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