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All Journal As-syifaa Jurnal Farmasi Journal of Engineering Science and Technology Applications
Iksan, Muh.
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Biochemistry, Genetics & Molecular Biology Chemistry Engineering Health Professions Immunology & microbiology Medicine & Pharmacology

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PENENTUAN NILAI SPF DARI EKTRAK ETANOL DAUN JAMBU AIR (Syzygium aqueum) DAN DAUN KERSEN (Muntingia calabura L.) Zulkarnain, Iskandar; Aztriana, Aztriana; Hasrawati, A; Jaya, Taufiq; Iksan, Muh.; Mirawati, Mirawati
As-Syifaa Jurnal Farmasi Vol 16, No 2 (2024): AS-SYIFAA JURNAL FARMASI
Publisher : Fakultas Farmasi UMI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56711/jifa.v16i2.1141

Abstract

Skin is the outer part of the body that is directly exposed to the environment, especially sunlight such as ultraviolet radiation. The skin basically has a defense against the negative effects of UV radiation of sunlight. Excessive sun exposure to the skin can cause skin damage that is acute (fast) and chronic (long). One of the ways used to prevent these negative effects is to use suncreen with a high SPF value. Syzygium aqueum and Muntingia calabura L. are plants that can be utilized as natural sunscreen active ingredients due to the content of polyphenolic compounds and high antioxidant activity values in their leaves. The purpose of this study was to determine the SPF value of ethanol extracts of Syzygium aqueum and Muntingia calabura L. and its protection category. Determination of SPF value was carried out by UV-VIS spectrophotometric method at UV B wavelength (290-320 nm), then the absorbance value obtained was calculated into the Mansur mathematical equation. Determination of sunscreen protection category based on SPF value refers to the provisions of the Food Drug Administrations (FDA). The results showed that the highest SPF value of Syzygium aqueum was obtained at a concentration of 1000 ppm, namely 46.183 with ultra protection category and the highest SPF value of Muntingia calabura L. at a concentration of 1500 ppm, namely 47.975 with ultra protection protection category. Based on these results, Syzygium aqueum and Muntingia calabura L. have the potential to be developed as sunscreen active ingredients with ultra protection category.
Studi Pemisahan Bijih Mangan dari Paludda Daerah Barru Menggunakan Shaking Table dengan Variasi Ukuran Butir: Separation Study of Manganese Ore from Palludda Barru Region Using Shaking Table with Variation of Grain Size Fraction Bakri, Suriyanto; Ratmi Nurhawaisyah, Sitti; Nurmalasari; Iksan, Muh.; Prayitna, Yusri; Putri, Syukrika
Journal of Engineering Science and Technology Applications Vol. 3 No. 1 (2025): Journal of Engineering Science and Technology Applications
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jesta.v3i1.217

Abstract

Manganese is one of the mineral products of mining, especially those found in Indonesia, such as in the Paludda area of Barru Regency, South Sulawesi. Manganese ore is known as raw material for steel industry, battery industry and chemical industry. This research was conducted at the Mining Engineering Study Program's Materials Processing Laboratory. The purpose of this study was to determine the percentage increase in manganese ore content after the concentration process, determining the recovery of manganese ore against variations in grain size using a shaking table. The analysis used in this research includes shaking table equipment, XRF analysis and also XRD analysis, from this processing will be obtained Mn content. The results of this study show shaking table separation using operating variables with an initial sample weight of 500 grams with levels in the initial sample of MnO of 33.58%, in concentrate -65 of 26.60%, concentrate -100 of 25.93%, concentrate -150 of 25.46%, concentrate -200 of 26.93%, in tailings -65 of 24.17%, tailings -100 of 23.79%, tailings -150 of 22.79% and tailings -200 of 22.60. Therefore, the results of the study can be concluded that the shaking table operation obtained the optimal concentrate and tailings in the -150 MnO concentrate with a recovery of 23.65%, then the -100 MnO tailings with a recovery of 38.68%
Co-Authors A Hasrawati AA Sudharmawan, AA Aztriana Aztriana, Aztriana Bakri, Suriyanto Jaya, Taufiq Mirawati Mirawati Nurmalasari Prayitna, Yusri Ratmi Nurhawaisyah, Sitti Syukrika Putri