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Armeida Dwi Ridhowati Madjid
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armeida@uin-malang.ac.id
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+6281233402334
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alchemy@uin-malang.ac.id
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Fakultas Sains dan Teknologi Universitas Islam Negeri (UIN) Maulana Malik Ibrahim Malang Gedung BJ Habibie Lt 2 Jl. Gajayana 50 Malang 65144 Indonesia
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Kota malang,
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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 203 Documents
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Comparison of Antioxidant Activity Testing of Rosemary Leaves Using the DPPH Method Ardian, Muhammad Nur; Wahyuningsih, Sri; Sudarni, Dyan Hatining Ayu
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.v13i2.36316

Abstract

The ability of rosemary leaf extract to scavenge free radicals was tested using the DPPH method in this research. Rosemary leaves were selected based on their natural richness in antioxidant compounds such as polyphenols and flavonoids. The test results showed that the ethanol extract, ethyl acetate fraction, and n-hexane fraction all exhibited very strong antioxidant potential, with  values below 50 ppm. The ethanol extract was the most potent with an IC₅₀ of 23.98 ppm, followed by the ethyl acetate fraction with an  of 26.60 ppm and the n-hexane fraction with an  of 27.95 ppm. The superiority of the ethanol extract is attributed to its ability as an optimal polar solvent for dissolving phenolic compounds. These compounds play a crucial role in stabilizing free radicals through hydrogen/electron donation, as well as resonance mechanisms.
Adsorption of Ciprofloxacyn by Plate-Like Bi4Ti3O12 Manunggal, Pinky Lintang Satriani; Prasetyo, Anton
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.v13i2.36708

Abstract

Antibiotic compound waste has attracted significant attention because of its harmful effects on aquatic environments. One of the methods reported as a potential approach for antibiotic wastewater treatment is adsorption. Bi4Ti3O12 is a triple-layer Aurivillius compound reported to exhibit adsorption properties, although research remains limited. Therefore, we synthesized plate-like Bi4Ti3O12 using the molten salt method. The adsorption test results showed that Bi4Ti3O12 reduced ciprofloxacin concentration by ~51% within 120 minutes. It shows that Bi4Ti3O12 has the excellent capability to adsorb the antibiotic compound ciprofloxacin. Keywords: Ciprofloxacin, Adsorption, Bi4Ti3O12
Edible Film Application of Mung Bean Starch with the Addition Glycerol as a Button Mushrooms Packer Firdausi, Karima Mumtaz; Sedyadi, Endaruji; Rahmayanti, Maya; Warsito, Gita Miranda
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.v13i2.31684

Abstract

The research on the production of edible films from mung bean starch with the addition of glycerol as packaging for button mushrooms aims to analyze the effect of varying glycerol concentrations on the physical and mechanical properties of the edible film, as well as the shelf life of button mushrooms in terms of weight loss. The stages of this research include the production of mung bean starch, the creation of edible films, characterization of the starch and edible films, and their application to button mushrooms using weight loss tests. The edible films were made with glycerol concentrations of 6.3%, 12.6%, and 18.9% of the total starch weight used. The results showed that the edible films at each glycerol variation exhibited a reduction in weight loss that was generally lower compared to the weight loss of the control button mushrooms.

Page 21 of 21 | Total Record : 203

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