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All Journal IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) IJEMS (Indonesian Journal of Environmental Management and Sustainability) Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat
Musifa, Eva
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Education Energy Environmental Science Languange, Linguistic, Communication & Media Nursing Public Health Social Sciences

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The Effect of Oxidative Stress on Growth and Antioxidant Activity of Microalgae Oocystis sp Musifa, Eva; Warni, Mega; Talib, Ramanisa Muliani; Dharma, Abdi; Mardiah, Elida; Harvianti, Yuniar; Indah, Indah; Tania, Alinda
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 10, No 1 (2025): February 2025
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v10.i1.30

Abstract

This study was conducted to see the effect of growth and antioxidant activity of microalgae Oocystis sp before and after adding NaOCl to Growmore medium combined with urea. Antioxidant activity test was conducted by calculating IC50 spectrophotometrically with the 1,1-diphenyl-2-picrylhydrazyl (DPPH) method. Oocystis sp extract was obtained by sonication and maceration process with methanol solvent. The results showed the best growth curve for the growth of microalgae Oocystis sp in a mixture of Growmore medium 0.02% b/v and Urea 0.002% b/v. These results also showed a decrease in Oocystis sp growth in a mixture of Growmore medium 0.02% b/v and Urea 0.002% b/v with the lowest growth decrease in the addition of NaOCl with a concentration of 0.01%. The IC50 value of Oocystis sp extract in methanol solvent has high antioxidant activity in Growmore 0.02% b/v + Urea 0.002% b/v medium, which is 55.5862 mg/L. It can be concluded that NaOCl affects the growth and antioxidant activity of microalgae Oocystis sp, but at certain concentrations NaOCl experienced a negative effect.Keywords: Microalgae, Oocytis sp, Oxidative Stress, Growth, Antioxidant
Preparation and Application of Biochar from Areca catechu L. Peel for Malachite Green and Reactive Blue Dyes Removal Palapa, Neza Rahayu; Putra, M. Bagus Kurnia; Musifa, Eva; Yuliasari, Nova; Adawiyah, Robiatul
Indonesian Journal of Environmental Management and Sustainability Vol. 9 No. 1 (2025): March
Publisher : Magister Program of Material Science, Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijems.2025.9.1.28-35

Abstract

 The utilization of Areca catechu L. fruit peel waste as biochar offers a sustainable solution for waste management while enhancing the material’s value as an efficient adsorbent. Biochar from Areca catechu L. fruit peels was processed through pyrolysis for 2 hours at temperature of 500oC. This study investigates the use of biochar from Areca catechu L. peel as an adsorbent for Malachite Green (MG) and Reactive Blue (RB) dyes in a batch system, with a focus on analysing the kinetic adsorption processes. The biochar was characterized using XRD, FTIR, SEM and BET. BET analysis was conducted, which shows that the surface area of biochar from Areca catheca L. fruit peel after pyrolysis treatment was 29.52 m2/g. The adsorption of MG by the biochar from Areca catechu L. peels was found to be greater than that of RB. The biochar showed an adsorption capacity of 16.113 mg/g for MG, while its capacity for RB was 15.499 mg/g. The adsorption process of biochar from Areca catechu L. peels for both MG and RB dyes follows a pseudo-second-order kinetic model.
Penyediaan Obat Penyakit Kulit Dan Luka Dari Cairan Fermentasi Lidah Buaya Dan Daun Sirih Riyanti, Fahma; Desnelli, Desnelli; Fatma, Fatma; Yuliasari, Nova; Julinar, Julinar; Musifa, Eva
Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat Vol. 5 No. 3 (2025): Mei 2025 - Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat
Publisher : Indonesian Scientific Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59395/altifani.v5i3.693

Abstract

Cairan Fermentasi anaerob pada lidah buaya dan daun sirih mengandung enzim-enzim, beberapa senyawa kimia, dan sumber antimikroba alami. Kandungan ini memiliki kemampuan terhadap antibakteri dan anti jamur yang bermanfaat untuk mengobati penyakit kulit, luka dan untuk kesehatan kulit. Proses penyembuhan dapat dipercepat karena senyawa antibakteri menstimulator respon imun tubuh sehingga dapat menyembuhkan luka dan penyakit kulit. Kegiatan pengabdian yang berupa penyuluhan, praktek pembuatan cairan fermentasi lidah buaya - daun sirih dan pemberian produk yang sudah jadi merupakan metode yang dilaksanakan di Desa Permata Baru Kecamatan Indralaya Utara Kabupaten Ogan Ilir. Agar peserta penyuluhan memahami tujuan kegiatan maka dilakukan praktek pembuatan cairan fermentasi dan peserta penyuluhan yang dibagi menjadi 3 kelompok. Pelaksanaan kegiatan dilaksanakan sebanyak tiga kali. Pelaksanaan kedua adalah memantau cairan fermentasi yang dibuat sebelumnya. Hasil fermentasi dibuka setelah 3 bulan, ketiga cairan fermentasi tersebut berhasil dibuat ditandai aroma asam segar dan warna coklat.
Co-Authors Abdi Dharma Desnelli Desnelli Elida Mardiah Fahma Riyanti Fatma Harvianti, Yuniar Indah Indah Julinar Julinar Nova Yuliasari Putra, M. Bagus Kurnia Robiatul Adawiyah Talib, Ramanisa Muliani Tania, Alinda Warni, Mega