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All Journal Elkawnie KOVALEN: Jurnal Riset Kimia Panrita Abdi - Jurnal Pengabdian pada Masyarakat Saintifik : Jurnal Matematika, Sains, dan Pembelajarannya Jambura Journal of Mathematics Community Development Journal: Jurnal Pengabdian Masyarakat
Musafira
Universitas Sulawesi Barat
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Engineering Health Professions Mathematics Physics Public Health Other

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Synthesis and Characterization of Bagasse (Saccharumofficinarum L.) Silica Gel Modified Diphenylcarbazone Rismawaty Sikanna; Dwi Nur Assyifah Rajmah; Kurnia Ramadani; Musafira Musafira; Arfiani Nur; Amalyah Febryanti
Elkawnie: Journal of Islamic Science and Technology Vol 7, No 1 (2021)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v7i1.9239

Abstract

Abstract: Bagasse is a solid waste from the sugar cane milling process in the sugar industry. The waste can be used as an ingredient in making silica gel which functions as an adsorbent. This can be done by changing its chemical structure composition to increase its role and function. This study aims to determine the characteristics of silica gel synthesized from bagasse (Saccharumofficinarum L.) and modified using diphenylcarbazone as much as 0.24 g with sol-gel technique. The characterization results obtained from Fourier transform infrared (FTIR) analysis of diphenylcarbazone modified silica gel, namely the absorption of Si-OH, Si-O-Si groups supported by the appearance of C꞊O, C꞊N, NH, and N꞊N groups. Characterization using x-ray diffraction (XRD) showed a change in amorphous silica to crystals, with the results obtained showing a crystal size of 41.468 nm.Abstrak: Ampas tebu merupakan limbah padat yang berasal dari proses penggilingan tebu pada produksi gula. Limbah tersebut dapat dimanfaatkan sebagai bahan pembuatan silika gel yang berfungsi sebagai adsorben. Hal tersebut dapat dilakukan dengan mengubah komposisi struktur kimianya agar dapat meningkatkan peran dan fungsinya. Penelitian ini bertujuan untuk mengetahui karakteristik silika gel yang disintesis dari ampas tebu (Saccharumofficinarum L.) dan dimodifikasi menggunakan difenilkarbazon sebanyak 0,24 gr dengan teknik sol-gel. Diperoleh hasil karakterisasi dari analisis fourier transform infrared (FTIR) terhadap silika gel termodifikasi difenilkarbazon menunjukkan adanya serapan gugus Si-OH, Si-O-Si yang didukung dengan pembentukan gugus C꞊O, C꞊N, N-H, dan N꞊N. Karakterisasi menggunakan difraksi sinar-x (XRD) menunjukkan perubahan silika amorf menjadi kristal dengan hasil yang diperoleh memperlihatkan ukuran kristal sebesar 41,468 nm.
PRODUKSI ENZIM LIPASE DARI Aspergillus niger ISOLAT KAPANG KOPRA DENGAN MENGGUNAKAN MEDIUM KELAPA PARUT Indah Indah; Mappiratu Mappiratu; Musafira Musafira
KOVALEN: Jurnal Riset Kimia Vol. 3 No. 3 (2017): Edisi Desember
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (447.746 KB)

Abstract

The investigation about the lipase enzyme production from Aspergillus niger using grated coconut as a medium has been done. The aim of the study is to determine the best incubation time, pH and water content which produced lipase enzyme with high activity. Randomized Block Design (RBD) with 2 factorial pattern (incubation time and pH of the medium) was used in this research. Each factor consists of three levels and it was done in the triple. The level of incubation time and of pH were 48, 60, 72 hours and pH 5, 6, and 7, respectively. The observed parameter was the obtained lipase enzyme activity. The result showed that the highest activity was achieved at pH 7 for 48 hours of incubation time with 45% of water content. The amount of lipase enzyme activity was 1.70 µmol/ml.minutes.Keywords: mold coconut, Aspergillus niger, lipase
PEMBUATAN KONSENTRAT PROTEIN DARI BIJI KELOR (Moringa oleifera L.) DAN ANALISIS PROFIL ASAM AMINO Nurhayati Nurhayati; Mappiratu Mappiratu; Musafira Musafira
KOVALEN: Jurnal Riset Kimia Vol. 4 No. 1 (2018): Edisi April
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (583.651 KB) | DOI: 10.22487/kovalen.2018.v4.i1.10180

Abstract

Penelitian tentang pembuatan konsentrat protein dari biji kelor dan analisis profil asam amino telah dilakukan, dengan tujuan untuk menentukan tingkat kejenuhan amonium sulfat yang menghasilkan konsentrat protein dengan rendemen dan kadar protein tertinggi, rasio tepung biji kelor terhadap amonium sulfat yang menghasilkan konsentrat protein dengan rendemen dan kadar protein tertinggi, dan mengetahui profil asam amino konsentrat protein biji kelor. Penelitian ini dilakukan dengan menggunakan rancangan acak lengkap (RAL), dengan variasi tingkat kejenuhan amonium sulfat 50%, 60%, 65%, 70%, 75%, 80% dan variasi rasio tepung biji kelor terhadap amonium sulfat 1:2, 1:3, 1:4, 1:5, dan 1:6 (b/v), setiap perlakuan dilakukan sebanyak 2 kali. Tingkat kejenuhan amonium sulfat terbaik diperoleh pada 65% dengan rendemen sebesar 46,56% dan kadar protein 72,18%. Rasio amonium sulfat terhadap tepung biji kelor diperoleh rasio terbaik  1:6 dengan rendemen sebesar 70,96% dan kadar protein sebesar 74,16%. Profil asam amino konsnentrat protein biji kelor yaitu asam amino essensial berupa arginin (77,3 mg/g), fenilalanin (27,61 mg/g), leusin (27,39 mg/g), valin (15,19 mg/g), isoleusin (13,16 mg/g), threonin (11,29 mg/g), metionin (10,67 mg/g), lisin (7,57 mg/g), dan triptofan (3,49 mg/g). Asam amino non essensial berupa asam glutamat (97,2 mg/g), prolin (26,3 mg/g), glisin (24,74 mg/g), alanin (17,57 mg/g), asam aspartat (17,45 mg/g), serina (15,16 mg/g), tirosin (11,29 mg/g), dan sistina (5,9 mg/g).Kata kunci : Asam amino essensial biji kelor, Biji kelor, Konsentrat protein, Profil asam amino
PEMANFAATAN LIMBAH KULIT BUAH PISANG KEPOK (Musa paradisiaca) SEBAGAI BIOSORBEN ZAT WARNA RHODAMIN B Musafira Musafira; Nurfitrah M Adam; Dwi Juli Puspitasari
KOVALEN: Jurnal Riset Kimia Vol. 5 No. 3 (2019): Edisi Desember
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (573.476 KB) | DOI: 10.22487/kovalen.2019.v5.i3.14629

Abstract

The investigation about the utilization of Banana peel (Musa paradisiaca) as biosorbent Rhodamine B dye has been done The purpose of this study was to determine the maximum contact time and to determine the adsorption capacity of kepok banana peel. Completely randomized design (CRD) was used in this research with two variables (the contact time and Rhodamine B concentration. Both variables were done in five levels i.e 10, 30, 60, 90, and 120 min and 2, 4, 6, 8 and 10 ppm respectively. The result showed that the maximum concentration of banana peel in adsorbing Rhodamine B was 6 ppm with 120 of contact time, and Rhodamine B adsorption capacity was 4.55mg/g. Keywords: Banana peel, Rhodamine B, biosorbent
Penyerapan Ion Logam Merkuri Menggunakan Arang Aktif Limbah Kulit Pisang Kepok (Musa paradisiaca Formatypica): The Adsorption of Mercury Metal Ion Using Kepok Banana’s Peel Waste (Musa paradisiaca Formatypica) Charcoal Musafira; Dzulkifli; Fadrinah; Laila Qadrini
KOVALEN: Jurnal Riset Kimia Vol. 6 No. 1 (2020): Edisi April
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2020.v6.i1.15043

Abstract

This research aimed to determine the percentage of mercury metal ion adsorbed in kapok banana peel’s activated carbon. It was done by applying Completely Randomized Design (CRD) with 6 variations of contact time, pH, and mercury concentration (i.e 10, 20, 30, 40, 50, 60 minutes; pH of 1, 2, 3, 4, 5, 6; and concentration of 10, 20, 30, 40, 50, 60 ppm, accordingly). The result showed that the equilibrium time was reached at 30 minutes, the maximum pH was reached at pH 5 and the maximum of adsorbed mercury ion at 40 ppm of mercury ion concentration. The adsorption percentages of those parameters were 61%, 98%, and 99%, respectively. Keywords: Kepok banana’s peel, charcoal, mercury metal ion.
Pengaruh Kadar Air dan Kadar Asam Lemak Bebas Terhadap Masa Simpan Minyak Kelapa Mandar: The Influence of Water Content and Free Fatty Acid Content on Mandar Coconut Oil Shelf Life Musafira; Dzulkifli; Fardinah; Nizar
KOVALEN: Jurnal Riset Kimia Vol. 6 No. 3 (2020): Edisi Desember
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2020.v6.i3.15344

Abstract

Mandar coconut oil made in Tulu village, Majene Regency, West of Sulawesi, is very popular among Sulawesi Barat people. It is because of the unique aroma which is not owned by other Mandar oil traders. In addition, according to Mandar coconut oil trader who is also the produsen of Mandar oil said that his coconut oil could be stored for months. This research aimed to know the influence of water content and free fatty acid content on Mandar coconut oil shelf life. Gravimetric Method and Alkaline method were used to determine the water content and the free fatty acid content respectively. The oil was stored at room temperature. Water content and free acid content were measured every week, i.e week zero to week four (5 observations). Shelf life estimation was done by applying the kinetic theory. The result shows that the water content and the free fatty acid content increase as shelf life increases. Mandar coconut oil can be stored at room temperature for 1 month, 12 days. Keywords: Mandar coconut oil, water content, free fatty acid, shelf life
Pengaruh Penambahan Abu Sekam Padi Terhadap Peningkatan Kualitas Minyak Mandar: The Effect of Rice Husk Ash Addition on The Increasing of Mandar Coconut Oil Quality Musafira; Dzulkifli; Hikmah; Nizar
KOVALEN: Jurnal Riset Kimia Vol. 7 No. 1 (2021): Edisi April
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2021.v7.i1.15494

Abstract

Mandar coconut oil is one of the coconut processed products, which has become superior product in West Sulawesi especially in Majene regency. Unfortunately, the Mandar coconut oil can’t be used more than a month because the water content and free fatty acid content of the oil have exceeded the maximum standard of SNI, so it can adversely affect on health. On the other hand, the existence of rice husk in Indonesia itself especially in West Sulawesi has not received attention and is limited to a few needs such as for ash or livestock feed, and the rest is thrown away. This research aims to determine the effect of rice husk ash addition on the increasing of Mandar coconut oil quality. Completely randomized design was used in this research with 6 rice husk ash concentration variation levels i.e. 0%, 5%, 10%, 15%, 20% and 25%. The result shows that the addition of rice husk ash with 10% to 25% can reduce the water content of the oil until the quality standard of SNI is full filled. The highest reduction of water content was reached with 25% of rice husk ash concentration with 81% of reduction percentage. While, the addition of rice husk ash with 15% concentration can reduce the free fatty acid content of Mandar coconut oil until 32%.
Analisis Kandungan Merkuri (Hg) pada Badan Air, Sedimen dan Biota yang Terdampak Aktivitas Pertambangan Emas di Kabupaten Parigi Moutong: Analysis of Mercury (Hg) Content in Water Bodies, Sediments, and Biota Affected by Gold Mining Activities in Parigi Moutong District Ernawaty Rasul; Musafira Musafira
KOVALEN: Jurnal Riset Kimia Vol. 8 No. 1 (2022): April Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2022.v8.i1.15835

Abstract

Parigi Moutong District is one of the regencies in Central Sulawesi province with the highest number of illegal mining activities. Unlicensed mining activities generally use mercury as an extracting agent and gold processing waste is generally disposed of in rivers or other water bodies. The purpose of this study was to analyze the levels of heavy metal mercury (Hg) in water bodies, sediments, and marine biota in gold mining areas in Parigi Moutong District. The sampling method was carried out by random sampling method, while the analysis of mercury content in samples of river water, sediment, and biota was carried out using atomic absorption spectroscopy (AAS). From the results of the study, it was found that mercury levels in water and sediment samples were still below the quality standard value which were 0.001 mg/Kg and 0.13 mg/Kg, respectively, while the mercury levels in all biota samples had exceeded the quality standard values ​(0.03 mg/Kg). This indicates that mercury has accumulated in the food chain in the water near the mine site.
Sensitivity, Optimal Control, and Cost-Effectiveness Analysis of Intervention Strategies of Filariasis Darmawati Darmawati; Musafira Musafira; Darma Ekawati; Wahyudin Nur; Muhlis Muhlis; Siti Fatima Azzahra
Jambura Journal of Mathematics Vol 4, No 1: January 2022
Publisher : Department of Mathematics, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1481.715 KB) | DOI: 10.34312/jjom.v4i1.11766

Abstract

In this work, sensitivity, optimal control, and cost-effectiveness of several intervention strategies of filariasis are discussed. We study the intervention strategies that are related to bednet use, insecticide, and the combination of bed-net use and insecticide. We use Pontryagin’s maximum principle to characterize the optimal controls. The Average Cost-Effectiveness Ratio (ACER) and Infection Averted Ratio (IAR) are used to identify the most cost-effective strategy. We also determine the basic reproduction number and investigate the sensitivity of the basic reproduction number on the parameters that are related to bed-net use and insecticide. Based on the ACER values, the most cost-effective strategy to control filariasis is insecticide intervention. On the other hand, the IAR values indicates that bed-net use intervention is the most cost-effective strategy. Furthermore, it is also the most effective strategy to eliminate filariasis. The sensitivity analysis results show that the control parameter related to bed net use and treatment have a central role in reducing the basic reproduction number and filariasis spread.
EDUKASI PEMBUATAN DAN PENYEMPROTAN DESINFEKTAN PADA MASYARAKAT DI DESA SURUANG KECAMATAN CAMPALAGIAN KABUPATEN POLEWALI MANDAR Musafira Musafira; Fardinah Fardinah; Laila Qadrini; Meryta Febrilian Fatimah; Septiawan Ardiputra; Asrirawan Asrirawan
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 1 No. 3 (2020): Volume 1 Nomor 3 Tahun 2020
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v1i3.1110

Abstract

Salah satu upaya untuk menjaga lingkungan tetap bersih, sehat, dan bebas dari paparan virus corona adalah dengan melakukan penyemprotan cairan desinfektan. Pemerintah senantiasa menghimbau masyarakat agar dapat membuat desinfektan secara mandiri di rumah. Akan tetapi, masyarakat di Desa Suruang, Kecamatan Campalagian, Kabupaten Polewali Mandar masih banyak yang belum mengetahui cara membuat desinfektan, kalaupun masyarakat ada yang tahu membuat desinfektan pada umumnya mereka hanya sekedar mencampur bahan kimia tanpa mengetahui kandungan senyawa di dalam botol kemasan, bagaimana sifat senyawa tersebut dan bagaimana takaran tepatnya. Akibatnya, pencampuran bahan kimia tersebut justru dapat berdampak negatif bagi mereka seperti pembentukan senyawa baru yang berbahaya bagi kesehatan mereka. Olehnya itu, kegiatan dalam wujud edukasi tentang pembuatan desinfektan sangat perlu dilakukan.
Co-Authors Amalyah Febryanti Andi Seppewali Arfiani Nur Asrirawan Darma Ekawati Darmawati Darmawati Darmawati Darmawati Dwi Juli Puspitasari Dwi Nur Assyifah Rajmah Dzulkifli Dzulkifli Ernawaty Rasul Ernawaty Rasul Fadrinah Fardinah Fardinah Hikmah Hikmah Indah Indah Kurnia Ramadani Laila Qadrini Laila Qadrini Mappiratu Mappiratu Mega Afsari Meryta Febrilian Fatimah Muhlis Muhlis Nizar Nurfitrah M Adam Nurhayati Nurhayati Rismawati Sikanna Septiawan Ardiputra Siti Fatima Azzahra Siti Tanri Cici Sulistiawati Wahyudin Nur