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Armeida Dwi Ridhowati Madjid
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Alchemy : Journal of Chemistry
Published by Universitas Islam Negeri Maulana Malik Ibrahim Malang
ISSN : 20861710     EISSN : 24606871     DOI : http://dx.doi.org/10.18860/al
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology
ALCHEMY: Journal of Chemistry (eISSN 2460-6871) is a scientific journal that focus on chemistry. This journal publishes a scientific article that cover research and review articles. Research topics for this journal such as natural science, physical chemistry, inorganic chemistry, organic chemistry, environment, biochemistry, marine, energy and other related-sciences. ALCHEMY: Journal of Chemistry also accepts article about halal products and chemistry on Islamic perspectives.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 198 Documents
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Sintesis Nanopartikel Hematit (α-Fe₂O₃) dari Limbah dengan Variasi Konsentrasi Ekstrak Daun Pepaya (Carica Papaya L) Nidayanti, Nidayanti; Khoiroh, Llik Miftahul
ALCHEMY:Journal of Chemistry Vol 12, No 2 (2024): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v12i2.26864

Abstract

Lathe iron waste contains high iron elements, namely 97.11%, which can potentially be a precursor in hematite synthesis. Hematite is an iron oxide with high stability, high durability, good covering ability, strong coloring power, and non-toxic properties that can be used as a pigment. The method used in this research was precipitation with varying concentrations of papaya leaf extract, namely 20%, 30%, and 40%. The synthesis results were characterized using XRD, Color reader, FTIR, and SEM instruments. This research examines the effect of varying papaya leaf extract concentrations on hematite pigment characteristics. The results of XRD characterization show that the synthesized product is hematite with a rhombohedral structure, which has a crystal size of 32 – 39 nm. Color grades include L*, a*, b*, and C*, produced according to the standard range of hematite pigments. Variations in the concentration of papaya leaf extract show that the greater the concentration of the extract, the darker the red pigment produced. FTIR characterization results show the presence of Fe-O groups at wave numbers 518 and 432 cm-1. The SEM results are aggregate, with average particle sizes for each variation of 2.1, 41.0, and 8.1 nm, respectively.
Application of Edible Film from Mung Bean Starch with the Addition of Glycerol Plasticizer on Broccoli Setiani, Ugi Asih; Sedyadi, Endaruji; Rahmayanti, Maya; Warsito, Gita Miranda
ALCHEMY:Journal of Chemistry Vol 13, No 1 (2025): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v13i1.31683

Abstract

The research on making edible film from mung bean starch with glycerol plasticizer as broccoli packaging aims to determine the characteristics of the edible film from mung bean starch with glycerol addition and its effect on broccoli weight loss. This study involved three stages, which include producing mung bean starch, making and characterizing the edible film, and applying the edible film on broccoli. The glycerol concentrations added were 25.2%, 31.5%, and 37.8% of the starch weight used. The edible film characteristics tested were thickness, tensile strength, elongation, Young's modulus, water vapor transmission rate (WVTR), and ash content. The application test on broccoli lasted 9 days. Results showed that thickness, tensile strength, and ash content met edible film standards, while elongation, Young's modulus, and WVTR did not meet applicable standards. Broccoli coated with the edible film had lower weight loss compared to the control.
Studi In Silico Senyawa Bioaktif Kopi Arabika (Coffea Arabica) Sebagai Kandidat Antikanker terhadap Reseptor PI3K p110-delta subunit Melani, Fitria; Putri, Silvi Ayudiah; Zulnita, Anis; Latief, Madyawati; Sutrisno, Sustrisno; Tarigan, Indra Lasmana
ALCHEMY:Journal of Chemistry Vol 13, No 1 (2025): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v13i1.28636

Abstract

Each year, 9.6 million people lose their lives to cancer, making it the world's second worst killer. Cancer is a disorder that results from genetic changes and has abnormal growth and spreads to other parts of the body. Cancer treatment is currently done with chemotherapy which has unfavorable side effects, so research needs to be done to determine safer alternatives to cancer treatment. This study aims to determine the activity of bioactive compounds in Arabica coffee beans that have potential as anticancer through identification of target receptors and interaction studies using molecular docking methods against PI3K p110-delta subunit receptors. The results showed that of the 21 compounds, five compounds gave good results, namely compounds 4-O-feruloylqunic acid, 4-O-caffeoylqunic acid, gluconic acid, 3-O-feruloylqunic acid and 3-O-caffeoylqunic acid with bond energy (ΔG) and inhibition constant values of -5.47; -5.33; -4.73; -4.69; -4.40 kcal/mol and 98.02; 123.62; 340.97; 363.82; 591.97 μM, respectively. So that these test ligands/compounds can have potential as PI3K receptor inhibitors in cancer treatment
Uji Aktivitas Antioksidan dan Kadar Total Fenol pada Sediaan Herbal Oil Ekstrak Kunyit (Curcuma domestica Val.) dalam Minyak Zaitun Murni (Extra Virgin Olive Oil) dan Minyak Kelapa Murni (Virgin Coconut Oil) Rofiki, Ida; Lailiyah, F. A.; Nafiannisa, Tita; Mahmudah, Rif’atul
ALCHEMY:Journal of Chemistry Vol 13, No 1 (2025): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v13i1.15461

Abstract

Ekstrak rimpang kunyit (Curcuma domestica Val.) dalam minyak zaitun murni (Extra Virgin Olive Oil) dan minyak kelapa murni (Virgin Coconut Oil) merupakan herbal oil yang berpotensi sebagai obat herbal. Metode ekstraksi yang digunakan adalah hot maceration . Parameter uji aktivitas antioksidan menggunakan metode DPPH dan identifikasi gugus fungsi menggunakan spektrofotometer FTIR. Kadar total fenol di uji dengan mengunakan pereaksi Folin-Ciocalteu Ekstrak kunyit dengan EVOO konsentrasi 40% memiliki nilai aktivitas antioksidan tertinggi sebesar EC50 1220 ppm, sedangkan ekstrak kunyit dengan VCO konsentrasi 30% memiliki nilai aktivitas antioksidan tertinggi sebesar EC50 487 ppm. Uji FTIR menunjukkan adanya gugus fungsi O-H, C=O, C=C, dan C-H yang merupakan gugus fungsi khas pada kurkumin. Kadar fenol total tertinggi ekstrak kunyit dalam EVOO diperoleh pada konsentrasi 40%, suhu ekstraksi 70°C dan lama ekstraksi 6 jam dengan  nilai 7,48%  GAE. Sedangkan kadar fenol total tertinggi ekstrak kunyit dalam VCO diperoleh pada konsentrasi 40%, suhu ekstraksi 70°C dan lama ekstraksi 4 jam dengan nilai 11,4%  GAE. Kata kunci : Kunyit, maserasi, aktivitas antioksidan, total fenol
Kinetics and Adsorption Equilibrium of Methylene Blue Using Shell and Coconut Husk Ash from Waste of Tofu Industry Cooking Process Activated with Sulfuric Acid Yulianti, Eny; Falahiyah, Falahiyah; Fahmi, Fariz Rifqi Zul; Istighfarini, Vina Nurul; Aini, Nur
ALCHEMY:Journal of Chemistry Vol 13, No 1 (2025): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v13i1.32476

Abstract

 Methylene blue adsorption was conducted using ash from coconut husks and shells, derived from industrial tofu fuel waste in Malang City. The ash was activated using 2% H₂SO₄. The determination of the optimum adsorption conditions for methylene blue included variations in contact time, solution pH, and adsorbent dosage. This study also examined adsorption capacity and adsorption isotherms. The ash was characterized using XRD to identify the silica phase present in the ash. The results showed that the optimum conditions for adsorbing 50 mL of methylene blue at a concentration of 13.97 mg/L were a contact time of 75 minutes, a pH of 3, and an adsorbent dosage of 0.5 grams. The adsorption capacity of methylene blue was found to be 4.533 mg/g, and the adsorption isotherm of methylene blue using H₂SO₄-activated coconut husk and shell ash followed the Freundlich isotherm model more closely than the Langmuir isotherm. XRD analysis indicated that the crystallinity and purity of silica in the ash activated with 2% H₂SO₄ improved due to the removal of impurity peaks from KCl and HNaCO₃  
Sifat Fisik Biofoam dari Pati Jagung: Alternatif Styrofoam Konvensional Ramah Lingkungan Ahmad, Fayzah; Fahriani, Vera Pangni; Yuliasari, Fitri; Sinaga, Angelita Sendi; Al-Qordhiyah, Zulaikha
ALCHEMY:Journal of Chemistry Vol 13, No 1 (2025): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v13i1.36477

Abstract

Biodegradable foam adalah kemasan ramah lingkungan pengganti styrofoam, dibuat dari pati alami yang diperkuat serat untuk menambah kekuatan. Penelitian ini bertujuan mengkaji sifat fisik biofoam berbahan dasar pati jagung dengan tambahan serat kulit kacang tanah sebagai pengganti styrofoam konvensional. Biofoam diproduksi menggunakan metode baking process dengan variasi suhu pencetakan 120°C, 140°C dan 160°C. Pengujian meliputi daya serap air, kadar air, kebocoran, dan tingkat biodegradasi. Hasil pengujian menunjukkan bahwa daya serap air yang berada dalam rentang SNI yaitu 3,646% di suhu 160°C. Uji kadar air sebesar 6,667% di suhu 160°C yang telah memenuhi SNI yang menandakan biofoam memiliki kelembapan yang sesuai untuk kemasan makanan. Uji kebocoran menunjukkan biofoam memiliki ketahanan yang cukup baik terhadap rembesan air setelah 7 hari di suhu 160°C. Pada uji biodegradable terbukti dapat terurai secara alami selama 49 hari di suhu 140°C dan 160°C. Secara keseluruhan, biofoam dari pati jagung dan serat kulit kacang tanah memiliki potensi sebagai kemasan ramah lingkungan.
Green Sintesis Senyawa Kompleks Fe(III) dengan Ligan Basa Schiff 2-Metoksi-6-(((4- Metoksifenil)Imino)Metil)Fenol Menggunakan Metode Penggerusan pada Variasi Waktu 10; 20; dan 30 Menit Mumtazah, Lulu Khoerul; Hanapi, Ahmad; Ningsih, Rachmawati
ALCHEMY:Journal of Chemistry Vol 13, No 1 (2025): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v13i1.35988

Abstract

Synthesis of the complex compound Fe(III) from the ligand 2-methoxy-6-(((4- methoxyphenyl)imino)methyl)phenol and FeCl3.6H2O using the grinding method has been carried out. The ligand 2-methoxy-6-(((4- methoxyphenyl)imino)methyl)phenol was synthesized from the reactants o-vanillin and p-anisidine. The synthesis results were tested for physical and chemical properties, characterization using FTIR and GC-MS. Meanwhile, the results of the synthesis of complex compounds were tested for physical properties and characterization using UV-Vis, FTIR, Jobs' method, AAS and the Kjeldahl method. The results of the Schiff base ligand characterization show the physical characteristics of powder form, brownish yellow color, and a melting point of 87 – 89 οC. Chemical properties tests showed that the product was soluble in 2M NaOH and slightly soluble in distilled water. The absorption of the imine group is formed at a wave number of 1620 cm-1. Ligand purity 100% with molecular ion (m/z) 257. Complex synthesis product at varying grinding times 10; 20; and 30 minutes each showed physical characteristics in the form of powder, blackish brown in color, and melting points of 178 – 181 οC respectively; 179 – 181 οC; and 178 – 182 οC. The complex compound shows a hypsochromic shift and the appearance of a d – d transition. The absorption of the imine functional group (C=N) is formed at wave numbers 1643 cm-1 and 1612 cm-1. The absorption of the Fe-O and Fe-N functional groups appears at wave numbers 532 cm-1 and 447 cm-1. The mole ratio of metal and ligand in complex compounds is 1:4. The iron (Fe) content is 5.1661% and the nitrogen (N) content is 5.4630%. These results show the prediction of the molecular formula of the complex compound, namely [Fe(III)(C15H15O3N)4].
Green Synthesis of ZnO Particles using Jasmine Tea Extract from Commercial Tea Bags Yayat, Hasna Noer Agus; Martina, Desti; Salis, Witri Aini; Maulida, Nafisa Rizki
ALCHEMY:Journal of Chemistry Vol 13, No 2 (2025): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v13i2.36519

Abstract

Zinc oxide refers to an inorganic compound functioning as a semiconductor, recognized for its wide-ranging potential and current usage in multiple domains, such as for antibacterial purposes. The formation of zinc oxide using a sustainable synthesis route, notably via plant-based extracts, has become an attractive alternative due to its eco-conscious and economical nature. This study synthesized ZnO particles with zinc acetate as the starting material and jasmine tea extract derived from commercial teabags acting as the reducing agent in two ratio variations (Z1 and Z2). The produced particles underwent characterization via XRD, SEM-EDX, PSA, UV-Visible spectrophotometry, and their antibacterial activity was evaluated using a microdilution method to find the MIC point. The result showed that both ZnO particles adopt a wurtzite crystal, and the morphology possesses a round morphology with an estimated diameter of 500 nm. Optical properties of ZnO were also observed, yielding results of 3.9 eV and 3.2 eV. Antimicrobial potency testing was additionally performed on S. aureus and E. coli with an MIC value of 1000 ppm.

Page 20 of 20 | Total Record : 198

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