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Acta Chimica Asiana
Published by Universitas Mataram
ISSN : 2550049x     EISSN : 25500503     DOI : -
Core Subject : Science,
Chemistry
Acta Chimica Asiana (online ISSN 2550-0503, print ISSN 2550-049x) is a peer-reviewed, open access journal that publishes high-quality original research articles as well as review articles in all areas of Chemistry and Chemical Engineering. Significant finding that is insufficient to be presented as comprehensive paper but needs to reach the reader immediately may also be submitted as a short communication. The editors welcome original contributions that have not been published and are not under consideration elsewhere. This journal published by the Indonesian Chemical Society, Chapter Nusa Tenggara and the University of Mataram. All papers published free of charge. Upon request, language assistance may also be provided to ensure valuable works in chemistry meet their readers. Acta Chimica Asiana is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry, including applied chemistry, and chemical engineering. Subject areas include (but are by no means limited to): 1. Analytical chemistry, including new techniques and instrumentation 2. Biochemistry and medicinal chemistry 3. Inorganic chemistry, including main group, transition metal, and f-block compounds, as well as coordination, organometallic, and solid state chemistry 4. Materials chemistry of hard and soft matter, from the nanoscale upwards 5. Nuclear chemistry and radioactivity 6. Organic chemistry, including synthesis, characterization, and properties of organic compounds, as well as study of organic reactions and their mechanisms 7. Physical chemistry and chemical physics 8. Sustainable, green, and environmental chemistry 9. Theoretical and computational chemistry
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 116 Documents
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The Effect of Using Augmented Reality-Based Learning Media on Chemistry Students’ Conceptual Understanding on Molecular Shape Febrian Solikhin; Dewi Handayani; Salastri Rohiat
Acta Chimica Asiana Vol. 5 No. 2 (2022)
Publisher : The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v5i2.128

Abstract

This study aims to examine the effect of using Augmented Reality-based learning media on students' conceptual understanding of molecular shape material. This research is a quasi-experimental study with a post-test-only design. The class used was class X Mathematics and Natural Sciences in one of the Bengkulu City High Schools, which received molecular shape material, consisting of 1 control class and 1 experimental class. The control class is a class that uses PowerPoint media as usual with 2-dimensional image visualization. In contrast, the experimental class is a class that uses augmented reality-based learning media with 3-dimensional visualization. The instrument used is a post-test instrument referring to conceptual understanding indicators. The results were analyzed using a t-test. The results of the analysis showed that the significance level was 0.002. This result indicates that it is smaller than the significance level, or it can be concluded that there is a significant difference in the average understanding of the concept between the control class and the experimental class.
Design of Reactor for the Production of Zinc Ferrite Fathiyah Afriani Anshari; Asep Bayu Dani Nandiyanto; Risti Ragaditha
Acta Chimica Asiana Vol. 5 No. 2 (2022)
Publisher : The University of Mataram

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

Abstract

The development and analysis of a reactor design for the manufacture of zinc ferrite is the aim of this study. The design employs a Continuous Stirred Tank Reactor (CSTR) type, with the tank and stirrer serving as the reactor's primary structural elements. The requirements for the built tank and stirrer will significantly impact the safety and production of silicon dioxide. As a result, Microsoft Excel is used for the calculation process for designing this reactor. The results of the calculations are obtained for design pressure 4,304 psig, cylinder thickness 0.07 in, top cover thickness 0.07 in, top cover height 12.39 in, bottom cover thickness 0.08 in, bottom cover height 21.18 in, reactor height 44.34 in, impeller length 5.43 in, stirring power 5 hp and shaft length 15.98 in. This design can become a reference for the production of zinc ferrite to make it more efficient in the production process.
Effect of Different Calcium Salts on Calcium Carbonates Formation Induced by Halophilic Bacillus oceanisediminis CB1 Chintan Bhagat; Sunil Bhavsar; Rajesh Patel; Anjana Ghelani; Pravin Dudhagara; Rajesh Chaudhari
Acta Chimica Asiana Vol. 5 No. 2 (2022)
Publisher : The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v5i2.138

Abstract

Biomineralization through the biomimetic CO2 sequestration process has been gaining attraction in recent years due to the formation of carbonates widely used as raw material in various industrial processes. The deposition and dissolution of calcium carbonate can be affected by physiochemical factors, such as the type of calcium salt. However, most studies have focused on calcium chloride (CaCl2). In the present study, A potent bacterial carbonic anhydrase (CA) producer, Bacillus oceanisediminis CB1, was screened on CA activity from mangrove plant Avicennia marina, collected from Ghogha, Bhavnagar, India (21.68°N 72.28°E). We premeditated deposition experiments to determine the effects of different calcium salts on calcium carbonate deposition in Bacillus oceanisediminis CB1 colonies. The results demonstrated the calcite formation observed in calcium salt-supplemented nutrient agar, calcium chloride, and calcium acetate. Merely uniform distribution and peripheral distribution of calcite particles found in calcium acetate and calcium chloride supplemented into nutrient agar, respectively. Calcite formation was confirmed by staining with Alizarin Red S dye followed by  SEM-EDX. This study will provide a vital reference for designing and applying microbial-induced carbonate precipitation using different calcium salts.
Identification of Active Compound from Mitragyna speciosa Leave as Antiinflammation Agent: In Silico Study. Ihsanul Arief; Erwan Kurnianto
Acta Chimica Asiana Vol. 5 No. 2 (2022)
Publisher : The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v5i2.139

Abstract

The study aims to identify the most responsible compound for the antiinflammation activity from Mitragyna speciosa leaves. Seventeen compounds previously reported to have been isolated from the leave were virtually screened against human 5-lipoxygenase protein and analyzed according to their binding energies. The native ligand used was arachidonic acid, and mitragynine was found to be the strongest binding compound (Pubchem ID: 3034396). In addition, ADMET profiling shows that mitragynine was not violating Lipinski’s rule of five and was not toxic.
Evaluation of the Antibacterial Activity of the Jackfruit Parasite Leaf Plant Extract (Macrosolencochinchinensis (Lour.) van Tiegh) with Vitro and In Silico approach Rahmiwati Hilma; Suma Rahmani Harahap; Jufrizal Syahri
Acta Chimica Asiana Vol. 5 No. 2 (2022)
Publisher : The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v5i2.141

Abstract

In traditional Melayu Riau medicine, the jackfruit parasite plant, also known as Macrosolen cochinchinensis (Lour.) van Tiegh, has been utilized as a remedy for coughs, a treatment for cancer, a diuretic, and to speed up the recovery process after giving birth. Through in vitro and in silico testing, this investigation aims to learn more about the bioactive components and antibacterial activity of n-hexane, ethyl acetate, and ethanol obtained from the extracts of the jackfruit parasite plant (Macrosolen cochinchinensis (Lour.) van Tiegh. The disc diffusion method was used for the in vitro testing, and the molecular docking method was used for the in silico testing. Both were conducted against Staphylococcus aureus ATCC 12600 and Escherichia coli ATCC 25922. Each sample extract was prepared in three different concentrations (10%, 30%, and 50%), while chloramphenicol was used as the positive control. Inhibition zones of the extract against E. coli bacteria were found to be as follows: 6 mm, 8.4 mm, and 10.6 mm for the n-hexane extract; 8.2 mm, 10.7 mm, and 15.6 mm for the ethyl acetate extract; and 6 mm, 7.1 mm, and 14.1 mm for the methanol extract. The results of the test to determine the extract's antibacterial activity were as follows: The following is a list of the zones of inhibition that the extract has against S. aureus bacteria: 6 mm, 7.5 mm, and 13.7 mm in diameter for the extract of n-hexane; 12.8 mm, 14.2 mm, and 19.2 mm in diameter for the extract of ethyl acetate. Test results of 7.2 mm, 9.3 mm, and 15.3 mm were obtained for the methanol extract. In accordance with the findings of the study, the ethyl acetate extract of jackfruit parasite leaves exhibited the highest level of antibacterial activity, as measured by an inhibition zone diameter of 19.2 mm, when tested on S. aureus bacteria. In the meantime, the results of molecular docking of punicalin and rutin, which have been reported to have activity against proteins 6GOS.pdb and 1OJZ.pdb, have potential as antibacterials because they form 5 and 9 hydrogen bonds with important amino acids of the target protein, with cDOCKER values of -57.9239 and -88.3993, respectively. It suggests that punicalin and rutin can inhibit the growth of bacteria.
Karakterisasi Asap Cair Hasil Pirolisis Sampah Plastik Kemasan Minyak Goreng Jenis PET dan Other Sebagai Bahan Bakar Alternatif Massie, Meisye; Anom, I Dewe K; Tani, Dj.; Solikhin, Febrian
Acta Chimica Asiana Vol. 6 No. 1 (2023)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v6i1.121

Abstract

Characterization of liquid smoke from the pyrolysis of PET and OTHER plastic packaging waste as an alternative fuel has been carried out. The pyrolysis method produces liquid smoke from PET and OTHER plastic waste at high temperatures. Pyrolysis of PET-type cooking oil packaging plastic waste produces 77.70% liquid smoke, while OTHER type of plastic packaging plastic waste pyrolysis produces approximately 71.65% liquid smoke. The physical properties of liquid smoke resulting from pyrolysis from PET and OTHER plastic cooking oil packaging waste cannot be used directly as fuel oil because some of these physical properties need to meet the SNI fuel quality standards. Identification with GC-MS that liquid smoke from PET-type plastic waste consists of 50 chemical compounds and liquid smoke from OTHER type plastic waste consists of 49 chemical compounds, composed of chemical derivatives of alkanes, alkenes, cycloalkanes, cycloalkenes, and alcohols.
Pulp synthesis using bamboo raw materials through unbleached and bleached processes Siregar, Sri Hilma; Rahmadini, Syafri; Hasmalina, Nasution; Rizki, Ramadhanti Aulia; Eri , Kafri
Acta Chimica Asiana Vol. 6 No. 1 (2023)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v6i1.135

Abstract

This study aims to see the potential of bamboo as a new raw material for the Indonesian pulp industry, specifically for the manufacture of pulp products, because in Indonesia, the import value for dissolving is still high, and the raw materials used still use wood plants. This study consists of three stages: the pre-hydrolysis stage using water, the cooking stage with the kraft pulping method, and bleaching using the elemental chlorine-free (ECF) method. Bamboo flakes that run into the pre-hydrolysis process decreased the Kappa Number value of pulp produced, which ranges from 4.63% - 14.52% compared to bamboo flakes that do not run into the pre-hydrolysis process. The brightness increase to 0.844% - 2.96% compared to bamboo flakes that do not run into the process of pre-hydrolysis. For pulp products, the value of Alpha Cellulose obtained is around 89.18% - 90.32%.
Synthesis novel flavone from vanillin Rahmawati, R; Sofia , Baiq Fara Dwirani
Acta Chimica Asiana Vol. 6 No. 1 (2023)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v6i1.127

Abstract

Flavone compounds present as secondary metabolites in many plants have beneficial phytochemical activity. Isolation of flavones from various parts of plants has been widely carried out, but the synthesis pathway is another way to obtain higher yields. This research aimed to synthesize flavone compounds from vanillin and 2-hydroxyacetophenone through chalcone intermediates to produce a 74% yield using an iodide catalyst. This new flavone compound has been used as a chemosensor to detect anions
Synthesis and characterization of TiO2-Fe for photocatalytic applications of domestic waste Rahmadhani, Annisa; Nasution, Hasmalina; Prasetya, Prasetya; Dayumita, Novialis; Siregar, Sri Hilma
Acta Chimica Asiana Vol. 6 No. 1 (2023)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v6i1.140

Abstract

Wastewater originating from household, industrial, and public places that contains materials can endanger human life and living things and disrupt environmental sustainability. Various methods have recycled domestic wastewater. One is through the photodegradation process utilizing ultraviolet light in the photocatalytic process. Inorganic materials are semiconductors with photocatalyst activity that can absorb photons and simultaneously carry out material interface transformation reactions. The research aimed to determine the effect of adding Fe metal dopants on TiO2 photocatalyst activity in simulated methylene blue and domestic waste treatment. The precursor used was TiO2 P25 Degussa Anatase. Fe dopant was added using the hydrothermal method with variations of 2%, 4%, and 6%. The XRD characterization results show that TiO2 has a high degree of crystallinity, so the overall process of electron diffusion and electron transfer in SSPT is higher to increase its efficiency. SEM-EDX characterization results show that TiO2-Fe particles are scattered in a spherical shape with a size of less than (<)100 nm and tend to agglomerate. Test results of simulated methylene blue (MB) waste with a UV-Vis spectrophotometer at variations in mass, concentration, pH, and time showed that the addition of doping could increase photocatalytic activity and optimum conditions at 6% (F6) were used in the analysis of parameters pH, COD and TSS of domestic wastewater. The pH value increased from 5 to 6, % COD degradation was 59.17%, and TSS was 23.07%. This research showed that TiO2-Fe was effective enough for domestic wastewater treatment.
Free solvent isolation of Fe3O4 from magnetic material iron sand utilizing high-energy ball milling as adsorben remazol turquoise blue G-133 and remazol red RB-133 Ramadhan, Muhammad; Fahmiati, Fahmiati; Alrum, Armid; La Ode Muhammad Zuhdi, Mulkiyan
Acta Chimica Asiana Vol. 6 No. 1 (2023)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

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

Abstract

The extraction of Fe3O4 from iron sand frequently utilizes a highly concentrated HCl solution, which is hazardous to the environment. The high-energy ball milling method of separating Fe3O4 from iron sand might produce Fe3O4 without acids and maintains its magnetic characteristics with a yield of 81.87%. The FTIR results suggest that the Fe3O4 separation procedure with high-energy ball milling was effective in eliminating the silica pick after activation with 2 M NaOH, which was confirmed by SEM-EDS data indicating there was no silica on the material's surface. Fe3O4 was separated, allowing use as an adsorbent to treat textile industry waste such as Remazol Turquoise Blue G-133 and Remazol Red RB-133. The adsorption of Fe3O4 on these two dyes occurred at pH 5, and as adsorbate concentration, contact time, and adsorption temperature of Fe3O4 were raised, the adsorption capacity increased. Remazol Turquoise Blue G-133 and Remazol Red RB-133 have qmax values of 16.75 and 1.43 mg/g, respectively. The isothermal adsorption of Fe3O4 for the two dyes quite follows the Freundlich isothermal with KF values of 1.87 and 0.42 L/g and n values of 2.17 and 1.22, respectively, results suggest that the adsorption process occurs physically and forms a multilayer adsorption surface. These results are supported by data obtained from the adsorption kinetics, which shows that it follows the first-order adsorption kinetics. The dyes thermodynamics also showed positive results for ΔHo and ΔGo, indicating that the process of adsorption was endothermic and not spontaneous, but to the degree of disorder (ΔSo), Remazol Turquoise Blue G-133 outperformed Remazol Red RB-133.

Page 6 of 12 | Total Record : 116

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