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INDONESIA
Indonesian Journal of Chemistry and Environment
Published by Universitas Negeri Yogyakarta
ISSN : -     EISSN : 25993186     DOI : 10.21831
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Materials Science & Nanotechnology
Articles are welcome that deal with theoretical analysis, meta-anaysis reviews, and result of research or empirical studies from all aspect of Chemistry and Environment. Reports on new methodologies and comprehensive assessments of existing ones, as well as applications to new types of problems are especially welcome. Experimental papers are expected to be brought into relation with theory, and theoretical papers should be connected to present or future experiments. Manuscripts that apply routine use or minor extensions or modifications of established and/or published experimental and theoretical methodologies are appropriate if they report novel results for an important problem of high interest and/or if they provide significant new insights.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 73 Documents
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Photodegradation of rhodamine B over natural zeolite/ZnO Utomo, M. Pranjoto; Prodjosantoso, Anti Kolonial; Budiasih, Kun Sri; Yunita, Isti; Triani, Tisia Miftakhul; Rahmawati, Vera Dwi Nur
Indonesian Journal of Chemistry and Environment Vol. 7 No. 1 (2024): JUNE 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i1.74067

Abstract

Rhodamine B is dye compound commonly used in the textile industry that consisted of azo compound. Azo compound generally difficult to be degraded. Undegradated azo compound in rhodamine B make it danger for the environment. An effective effort to handle rhodamine B waste must be conducted. Natural zeolite/ZnO is a material that can be used to degrade rhodamine B to be simpler compound based on photodegradation procces. Based on the analysis, the particle size of natural zeolite/ZnO is 16.92709 nm and the band gap energy 2.92 eV. The highest degradation percentage of rhodamine B over natural zeolite/ZnO under UV irradiation is 99.54%.
A novel triazole as a rapidly acetate anion detector: synthesis, spectrophotometric, and TD-DFT studies Makki, Sajjad Qasim; Balakit, Asim
Indonesian Journal of Chemistry and Environment Vol. 7 No. 1 (2024): JUNE 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i1.72368

Abstract

A well- Sodium acetate has been used as a food flavor enhancer in the production of cheese, snack food, and pastry products. Hence, accurate quantification of sodium acetate content in food has significant importance within the realm of food chemistry. A Schiff-base reaction was used to produce the sensor 1,2,4 triazole derivative 3. The assessment of sensor 3's response to sodium salts (HSO4-, H2PO4-, NO2-, F-, Br-, Cl-, and AcO-) was conducted through naked-eye detection and subsequently confirmed using UV-vis spectroscopy. The addition of ions to sensor 3 resulted in a spectral change. Notably, only AcO- presented a unique shift in the visible spectra, while no changes were observed for the other anions. Sensor 3 has a notable level of sensitivity, as seen by the naked eye, in detecting acetate anion. The frequent addition of AcO- to a solution of sensor 3 results in an interesting color shift from light yellow to red-orange. The stoichiometry and association constant (Ka) were determined using the Benesi-Hildebrand equation, yielding values of 1:2 and 9.93x109 M-2, respectively. The calculation of the limit of detection (LoD) yielded a result of 6.86 µM. The synthesis of sensor 3 was confirmed using 1HNMR, IR, and UV techniques. The DT-DFT, HOMO, and LUMO values were computed using the Gaussian 09 software. 
The Potential of Carbon Sequestration in the Sanctuary Maleo Hungayono Resort TulaboloPinogu Nani Wartabone Bogani National Park Area Hamid, Ririn Septiani; K Baderan, Dewi Wahyuni; Hamidun, Marini Susanti; Katili, Abubakar Sidik
Indonesian Journal of Chemistry and Environment Vol. 7 No. 1 (2024): JUNE 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i1.72451

Abstract

A forest is a unified ecosystem in the form of an expanse of land containing biological natural resources. It is dominated by trees in one natural environment and another so that they cannot be separated. Forests play an important role in maintaining the balance of carbon dioxide in the atmosphere. Their plants can absorb carbon dioxide from the air during the photosynthesis process so they play an important role in maintaining climate balance. The Maleo Hungayono Sanctuary is a place for endemic animals including forests in the Bogani Nani Wartabone National Park area which cannot produce wood, so what will be the strength of the economic value of the TNBNW area is environmental services, including carbon. This research aims to determine the potential for carbon uptake in the Maleo Hungayono Sanctuary, Bogani Nani Wartabone National Park Area. The research results show that the highest biomass value at the research location is at the tree level with a total carbon uptake of 16,588.26 tons/ha; at pole level with total carbon uptake of 722.65 tonnes/ha; at the sapling level with a total carbon uptake of 63.91 tonnes/ha.
Tin - The Occurrences, Properties, and Applications: A Literature Review Muderawan, I Wayan; Karyasa, I Wayan; Young, David James
Indonesian Journal of Chemistry and Environment Vol. 7 No. 2 (2024): DECEMBER 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i2.77581

Abstract

Tin is a chemical element with the symbol Sn, atomic number of 50, atomic mass of 118.71 g/mol and belong to group 14 and period 5 in the periodic table of elements. Tin has two main allotropes, α-tin and β-tin, 10 stable isotopes, 29 unstable isotopes and 30 metastable isomers, the greatest number of any element. In nature, tin occurs primarily as the mineral cassiterite (SnO2) in various geological formations. It is often found in association with granite rocks and alluvial deposits. Tin is purified by smelting cassiterite with carbon followed by boiling and liquation or electrolytic methods. Tin is a silvery-white metal with a relatively low melting point of 231.93°C and a boiling point of 2,602°C. It exhibits good corrosion resistance, making it suitable for use in various environments, especially when alloyed with other metals. In addition, tin is soft, malleable, ductile metal and has excellent solderability making it useful for joining other metals together in the electronic and electrical equipment. Tin has two mains oxidation states, +2 and the slightly more stable +4, and can form inorganic and organometallic compounds.  Due to its remarkable physical and chemical properties make this metal attract attention and has very broad benefits. Tin is not only used in conventional technologies such as solders, cans and coins, but also in advanced technologies such as tin lithium-ion batteries, smart screens and solar cells. In future, tin will play a crucial role in advancing green technologies by enabling the development of renewable energy systems, energy-efficient processes, and environmentally friendly materials. Its versatility and sustainability make it an indispensable element in the transition towards a more sustainable future. Tin is also used as reagents in organic synthesis, such as allylic, allenic and propargylic stannanes, for forming C-C bond which are very necessary in drug synthesis and development. Tin as individual particles is not exceedingly lethal to living organisms. Elemental tin metal, its salts and its oxides present low toxicity. In contrast, certain organotin compounds are almost as toxic as cyanide. Since it is not biodegradable, organic tin can last longer in the environment.
Applications and Future Potential of X-ray Diffraction in Pharmaceutical Polymorphism: A Literature Review Dwiputra, Rizki Rava; Saputri, Jasmine Rahma; Utami, Marsah Rahmawati
Indonesian Journal of Chemistry and Environment Vol. 7 No. 2 (2024): DECEMBER 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i2.79071

Abstract

Polymorphism in drug compounds is a significant phenomenon in pharmacy because it affects physicochemical properties such as solubility, stability, and bioavailability, which impact the effectiveness and safety of drugs. X-ray diffraction (XRD) is one of the methods that can be used to identify and analyze the polymorphic properties of drug compounds. This article reviews the utilization of XRD in various studies, showing that this method is effective for identifying polymorphism, detecting changes in crystal forms, monitoring crystalline phase transitions, and characterizing the formation of new crystalline phases. Although very useful, XRD has limitations in detecting amorphous phases and requires optimal sample preparation. For more comprehensive results, XRD is often combined with other techniques such as DSC and FTIR. Overall, XRD plays an important role in drug development and quality control, and this technology is expected to continue evolving, including its ability to directly monitor the crystallization process to enhance drug quality and stability.
The Preparative Nonreflux Procedure on Disproportionation Reaction in Small-Scale Synthesis Rohmawati, Dini; Handayani, Sri; Budimarwanti, Cornelia; Sari, Dista Arum; Yuliyanti, Diana; Abdillah, Muchammad Ikmal; Pratiwi, Oktavia; Anasriah, Tria Novita
Indonesian Journal of Chemistry and Environment Vol. 7 No. 2 (2024): DECEMBER 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i2.82418

Abstract

Reactions with nonreflux procedures are based on the mechanical impact energy to promote the transformation process of chemicals. The simple procedures are grinding-milling, microwave-assisted, and ultrasonic-assisted. Generally, the procedures were undergoing nonsolvent or solventless reaction conditions also in effective and efficient processes, which corresponds to the principles of green chemistry. In its development, disproportionation reaction could also be undergone by applying these methods. This article discussed the preparative procedures of nonreflux with grinding, shaking, ultrasonic-assisted, and microwave-assisted in disproportionation reactions, which later could be used as standard procedures according to green chemistry and sustainable development goals (SDGs).
Species Composition, Utilization and Conservation Status of Plant Species in Gmelina arborea Agroforestry System in Boalemo Regency Kadir, Zen Setiawan; Baderan, Dewi Wahyuni K.; Hamidun, Marini Susanti; Utina, Ramli; Dunggio, Iswan
Indonesian Journal of Chemistry and Environment Vol. 7 No. 2 (2024): DECEMBER 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i2.79096

Abstract

Agroforestry is a land-use system that integrates trees, crops, and livestock to improve sustainability and resilience in agricultural practices. This research aimed to determine the composition of plant species in the White Teak Agroforestry, the utilization of plants and the conservation status of plant species in the White Teak agroforestry system. Quantitative approach was applied with plant data collection carried out by tracing the research location and observing all existing plant species accompanied by taking pictures using a digital camera. The results of the study indicate that the agroforestry system has significant potential in supporting environmental sustainability and community welfare. The results revealed there were 33 plant species found in the agroforestry, 23 of them were plants that distributed across various regions in Indonesia and 14 are classified as Least Concern by the IUCN Red List.
Curcumin Electropolymerization to Graphite Modification for Pb2+ Electrochemical Sensing Marwati, Siti; Prodjosantoso, Anti Kolonial; Padmaningrum, Regina Tutik; Wiraputri, Luthfia
Indonesian Journal of Chemistry and Environment Vol. 7 No. 2 (2024): DECEMBER 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i2.81727

Abstract

Curcumin is an organic ligand that can be electrocatalytic. Curcumin can be coated on graphite electrodes to produce electrodes modified with curcumin (GPC). Curcumin acts as a ligand and forms complex compounds with metals. The modification process was carried out by electropolymerization. The electrochemical method characterized the electroactive area, electron transfer, and interaction between the electrode and Pb2+ metal ions. Functional groups and surface morphology were characterized using FTIR and SEM. Validation of analytical methods including linear range, sensitivity, limit of detection, limit of quantitation, precision, and accuracy. The interaction of the GPC electrode with Pb2+ follows the electrochemical adsorption process. The GPC electrode can identify the presence of Pb2+ metal ions with a range of 3.01-70.03 µM and 181-919.2 µM. The results of the analytical method validation include linear ranges of 3.125-67.400 µM and 179.334-919.5 µM; sensitivity of 3.3605 µA/µM; limit of detection of 6.07 µM; limit of quantitation of 18.39 µM; precision of 0.93%; and accuracy of 99%.
Analysis of Caffeine, Total Phenolic Content, and Antioxidant Activity in Liberica Coffee Beans Roasted by Semi-Automatic and Conventional Methods Lestari, Lilla Puji
Indonesian Journal of Chemistry and Environment Vol. 8 No. 1 (2025): JUNE 2025
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v8i1.85978

Abstract

This study aims to evaluate the effect of roasting methods on the chemical and functional properties of Liberica coffee, focusing on caffeine content, total phenolic content (TPC), and antioxidant activity. Two roasting approaches were compared: semi-automatic roasting with controlled conditions, and traditional pan roasting with manual heat regulation. Caffeine levels were determined using UV-Vis spectrophotometry at 273 nm, while TPC was measured using the Folin–Ciocalteu method. Antioxidant activity was assessed via DPPH radical scavenging assay. The results revealed that semi-automatic roasting preserved more bioactive compounds, with higher caffeine content (1.86%) and TPC (56.84 mg GAE/g), compared to conventional roasting (1.34% and 41.27 mg GAE/g, respectively). Antioxidant activity was also significantly higher in semi-automatically roasted samples, with 72.3% inhibition and lower IC₅₀ value (168.5 ppm). These findings indicate that semi-automatic roasting enhances both chemical quality and functional potential of Liberica coffee. The study supports the application of controlled roasting technologies in post-harvest processing to improve the health-related value and market competitiveness of Liberica coffee products.
Antifungal Activity Test of The Aqueous and Ethanolic Extracts of Strawberry Leaves Against Absidia corymbifera Trijayanti, Salindri; Handayani, Sri
Indonesian Journal of Chemistry and Environment Vol. 8 No. 1 (2025): JUNE 2025
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v8i1.89514

Abstract

Absidia corymbifera is an opportunistic fungal pathogen that can cause serious infections, particularly in immunocompromised individuals. However, studies on natural antifungal agents effective against this species remain limited. This study investigates the antifungal activity of strawberry (Fragaria spp.) leaf extracts as a potential natural treatment against A. corymbifera. Aqueous and ethanol extracts were prepared using cold extraction methods—blending and maceration, respectively. Strawberry leaf extract was subjected to a qualitative phytochemical screening test and a quantitative total phenolic content test using the Folin-Ciocalteu method, then an antifungal activity test was carried out using the diffusion method. Phytochemical screening revealed the presence of tannins, flavonoids, and alkaloids in the aqueous extract, while the ethanol extract contained tannins, flavonoids, and steroids. The total phenolic content of ethanol extract of strawberry leaves is greater than that of strawberry leaf aqueous extract. Aqueous and ethanol extracts of strawberry leaves showed fungistatic antifungal inhibition against A. corymbifera with a larger inhibitory zone diameter in strawberry leaf ethanol extract. These findings suggest that strawberry leaf extracts, particularly ethanol-based, hold promise as a natural antifungal agent for controlling infections caused by A. corymbifera.

Page 7 of 8 | Total Record : 73

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