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All Journal METANA Alchemy : Journal of Chemistry Biodidaktika : Jurnal Biologi dan Pembelajarannya Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi JKPK (Jurnal Kimia dan Pendidikan Kimia) Community Empowerment Molekul: Jurnal Ilmiah Kimia Biokatalis: Jurnal Ilmu Biologi dan Pendidikan Biologi
Armadi Chairunnas
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Public Health Social Sciences Other

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Struktur Dan Komposisi Brachyura Berdasarkan Kerapatan Pohon Pada Komunitas Mangrove Di Teluk Kendari Armadi Chairunnas; Hilda Ayu Melvi Amelia
Biodidaktika : Jurnal Biologi dan Pembelajarannya Vol 17, No 1 (2022)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/biodidaktika.v17i1.16110

Abstract

Penelitian ini bertujuan untuk mengetahui struktur dan komposisi Brachyura berdasarkan kerapatan pohon pada komunitas mangrove di Teluk Kendari. Penelitian ini menggunakan metode plot kuadrat sebanyak tiga buah di setiap stasiun dengan luas 10 x 10 m yang diletakkan berdasarkan kriteria pengelompokan pohon dengan kerapatan tinggi, sedang, dan jarang. Indikator penelitian ini adalah struktur dan komposisi Brachyura yang meliputi kekayaan jenis, kemerataan jenis, keanekaragaman jenis, kesamaan komunitas, dan dominansi Brachyura pada komunitas mangrove di Teluk Kendari. Stasiun pengamatan terletak pada 5 kecamatan yaitu Kecamatan Abeli, Kecamatan Kendari Barat, Kecamatan Poasia , Kecamatan Mandonga, Kecamatan Kambu. Penelitian ini menunjukkan keanekaragaman 7 jenis Brachyura yang ditemukan pada lima stasiun yaitu Episesarma versicolor, Uca lactea, Uca triangularis, Parasesarma bidens, Uca crenulata, Uca pugnax, dan Uca dussumieri. Ketujuh jenis Brachyura tersebut terdiri atas 3 genus antara lain Uca, Episesarma, dan Parasesarma. Keanekaragaman jenis tertinggi diperoleh pada stasiun IV dengan plot yang bertipe kerapatan pohon tinggi, sedangkan keanekaragaman jenis terendah ditemukan pada stasiun I dengan tipe kerapatan pohon tinggi dan stasiun V pada tipe kerapatan pohon sedang.
Highly Selective and Sensitive Determination of Hg(II) Ions Using Ion Selective Electrodes (ISE) Coated with the BEC4ND1 Ionophore as Membranes Nasriadi Dali; Seniwati Dali; Armadi Chairunnas; Hilda Ayu Melvi Amalia; Sri Ayu Andini Puspitasari
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 2 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v7i2.62213

Abstract

The research on the highly selective and sensitive determination of Hg(II) ions using ion-selective electrodes (ISE) coated with the BEC4ND1 ionophore as a membrane has been successfully carried out. ISE was designed using the membrane composition of the [(BEC4ND1 ionophore : PTCPB : DOS : PVC) (3 : 2 : 60 : 35 % w/w)]. The ESI-BEC4ND1 ionophore has good characteristics where it shows a sensitivity value of 29.933 mV/decade in the Hg(II) ion concentration range of 10-9 - 10-1 M with a limit of detection (LoD) of 10-7 M. The response time obtained is in the range of 4 - 8 minutes with a relative standard deviation (RSD) of 0.548. The ESI-BEC4ND1 ionophore also shows the average value of selectivity coefficient (Kij) < 1. These results indicate that the presence of Zn(II), Cd(II), and Pb(II) ions as interfering ions in the analyte solution does not affect the performance of the ESI-BEC4ND1 ionophore in detecting Hg(II) ions. The ESI-BEC4ND1 ionophore that has been developed shows good selectivity, sensitivity, stability, and reproducibility, so the ESI-BEC4ND1 ionophore is promising to be used as a Hg(II) ion detector in the environment.
Antifungal Activity Test of the Ethanol Extract of Kaembu-embu (Blumea balsamifera) Leaves Against the Fungus C. albicans Growth Nasriadi Dali Wela; Arniah Dali Wela; Seniwati Dali; Armadi Chairunnas; Hilda Ayu Melvi Amalia; Sri Ayu Andini Puspitasari
ALCHEMY:Journal of Chemistry Vol 10, No 2 (2022): 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.v10i2.10954

Abstract

AbstractResearch on the antifungal activity test of ethanol extract of Kaembu-embu (Blumea balsamifera) leaves against the fungus C. albicans growth was carried out. The aim of this study was to examine the antifungal activity of ethanol extracts of Kaembu-embu (Blumea balsamifera) leaves on the growth of the fungus C. albicans. The ethanol extract of Kaembu-embu (Blumea balsamifera) leaves was obtained through maceration method. The ethanol extract of Kaembu-embu (Blumea balsamifera) leaves was tested for antifungal activity by liquid and solid dilution methods in determining minimum inhibitory concentration (MIC) and minimum kill concentration (MKC). The results of the antifungal activity of the ethanol extract of Kaembu-embu (Blumea balsamifera) leaves on the growth of the fungus C. albicans by the liquid dilution method showed the MIC value of 25 ppm and MKC value of 500 ppm. While the results of the antifungal activity of the ethanol extract of Kaembu-embu (Blumea balsamifera) leaves on the growth of the fungus C. albicans by solid dilution method showed the MIC value of 5 ppm with inhibitory ability of 50.13% of media control and a MKC value of 250 ppm.
Pretreatment of Used Cooking Oil Using Avocado Seed Adsorbent for Biodiesel Production Preparation Nasriadi Dali; Seniwati Dali; Armadi Chairunnas; Hilda Ayu Melvi Amalia; Sri Ayu Andini Puspitasari
METANA Vol 19, No 1 (2023): Juni 2023
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/metana.v19i1.51797

Abstract

Used cooking oil (UCO) can be used as raw material for biodiesel production, but its free fatty acid (FFA) content is still quite high, so it is necessary to do pretreatment in the form of an adsorption process to reduce FFA levels. This study aims to determine the optimum conditions for the adsorption process and determine FFA levels of UCO before and after pretreatment. The adsorbent used is avocado seed activated charcoal, because it has a surface area of 19.62 m2/g. The larger the surface area of the adsorbent material, the greater the adsorption capacity of the adsorbent. Optimization of the UCO adsorption process includes variations in adsorbent mass (6, 8, 10 g), adsorbent particle size (60, 100, 140 mesh), contact time (2, 6, 10 hours), and temperature (60, 80, 100oC). The results showed that the optimum conditions for adsorption of UCO were obtained at mass (10 g), particle size (100 mesh), contact time (6 h), and temperature (80oC). This condition can reduce the FFA content of UCO by 71.64% (w/w), from 5.29% (w/w) to 1.50% (w/w). The FFA content of UCO [1.50% (w/w)] produced after pretreatment was qualified as a raw material for the preparation of biodiesel production through the transesterification stage.
Training on making Pidada syrup and jam for the people of Roda Village, South Konawe Agusrinal Agusrinal; Ismi Fadjriah Hamzah; Samsi Burhan; Armadi Chairunnas; Aqmal Khaery; Wandy Murti Prasetya; La Ode Ismail; Syahruddin Syahruddin; Habil Hamid; Murni Murni
Community Empowerment Vol 8 No 6 (2023)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.8001

Abstract

Roda Village, which is located on the coast of Moramo Bay, has a fairly extensive mangrove area, most of which have been converted into shrimp and milkfish ponds. Converting mangrove land into ponds is quite dangerous if not balanced with land restoration efforts. One type of mangrove that is abundant on the coast of Roda Village is pidada (Sonneratia caseolaris). This activity aims to provide education to the public about the role and utilization of mangrove plants and processing pidada fruit into syrup and jam so that it can become an alternative livelihood. This activity uses the Participatory Rural Appraisal (PRA) approach to involve the active role of the community in implementing the activity. The result of this activity is that the people of Roda Village can understand the role and utilization of mangrove plants. In addition, the people of Roda Village can process Pidada fruit into syrup and jam.
Phytoremediation of nickel by Paraserianthes falcataria with varying levels of manure Hilda Ayu Melvi Amalia; Armadi Chairunnas; Andhika Puspito Nugroho
Jurnal Biolokus Vol 6, No 1 (2023): June
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v6i1.2118

Abstract

The objective of this study were to identify effective variations in fertilizer doses for phytoremediation of heavy metal nickel (Ni) by using sengon plants (Paraserianthes falcataria) before being used for post-mining land reclamation. This research is an experimental study, the growth parameters measured include plant height, number of leaves, root length, and plant biomass. The data obtained were analyzed using analysis of variance (ANOVA) and continued with Duncan's test. The manure used consists of chicken manure, calcium carbonate, and rice bran. Variation in fertilizer dose is the ratio between manure to mine soil 40:60 (A), 50:50 (B), 60:40 (C), 70:30 (D), and control without fertilizer (E) with four repetitions time. The results showed that there was a significant difference between the concentration of nickel content before and after the treatment of fertilizer dosing (p>0.05), which means that the dose of fertilizer can affect plant growth and phytoremediation abilities. The dose of D fertilizer (70:30) is the most suitable for phytoremediation of heavy metal nickel (Ni) because it shows the highest heavy metal concentration in the roots, which is 3.2 ppm. The plant growth parameters measured showed that the dose of fertilizer B (50:50) was most suitable for increasing plant height and biomass (P. falcataria) with a plant height of 27 cm and a biomass of 0.9 g/m2. The dose of C fertilizer (60:40) is most suitable for increasing the number of leaves with an average of 111.5 leaves. Control without fertilizer (E) is most suitable for increasing the root length of P. falcataria. Thus, the addition of manure affects the growth of P. falcataria, and nickel phytoremediation using P. falcataria at the dose of manure D (70:30) can reduce the nickel content in the soil.
Synthesis of Ionophore from p-t-Butyl-(carboxymethoxy)calix[4]arene Substituted Amide Nasriadi Dali; Seniwati Dali; Armadi Chairunnas; Hilda Ayu Melvi Amalia; Sri Ayu Andini Puspitasari
Molekul Vol 18 No 1 (2023)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2023.18.1.5927

Abstract

The ionophore has been successfully synthesized from p-t-butyl(carboxymethoxy)calix[4]arene subtituted amide. The ionophore was obtained in two steps of the synthesis reaction. The first step is the chlorination reaction of p-t-butyl(carboxymethoxy)calix[4]arene with thionyl chloride in dry benzene solvent. The product of the chlorination reaction is p-t-butyl(chloroacetylmethoxy)calix[4]arene in the form of the light brown viscous liquid with the rendemen of 78.25% and TLC (SiO2, CH3OH : CH2Cl2 = 1 : 1 v/v, Rf = 0.65). The second step is the amidation reaction of p-t-butyl(chloroacetylmethoxy) calix[4]arene with dimethylamine in dry tetrahydrofuran solvent. The product of the amidation reaction is p-t-butyl(dimethylcarbamoylmethoxy)-calix[4]arene or the DIMECAC4ND3 ionophore in the form of white solid with the rendemen of 60.75%, a melting point of 277-279 °C, and TLC (SiO2, CH3OH : CH2Cl2 = 1 : 1 v/v, Rf = 0.82).
Biosynthesis of Methyl Esters from Used Cooking Oil (UCO) using Lipase Enzyme from Aspergillus oryzae on Moldy Copra Nasriadi Dali; Seniwati Dali; Armadi Chairunnas; Hilda Ayu Melvi Amalia; Ayu Andini Puspitasari
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 8, No 2 (2023): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v8i2.67818

Abstract

The successful production of methyl esters from used cooking oil (UCO) using lipase enzymes from Aspergillus oryzae on moldy copra has been achieved. This method offers an eco-friendly substitute for crude palm oil (CPO) in generating methyl esters or biodiesel, contributing to waste reduction, economic benefits, and lowered greenhouse gas emissions for sustainable development. This study aimed to synthesize methyl esters from UCO using the Aspergillus oryzae lipase enzyme sourced from moldy copra. The enzyme was purified through ammonium sulfate fractionation and gel filtration column chromatography. Electrophoresis validated its purity, and activity was assessed through the Erdmann and Lowry method. Methyl ester synthesis involved transesterification with a UCO (1 mol): methanol (9 mol): lipase enzyme (15% v/v) ratio. The enzyme displayed notable characteristics, including 43.76 units/mg protein activity, a 41.7 kDa molecular weight, optimum pH of 8.2, temperature preference of 35°C, Km of 0.046, and a 1.926 µmol/minute Vmax. This enzyme efficiently catalyzed UCO (triolein) into methyl ester (methyl oleate), yielding 75.65%. Characterization using Fourier Transform Infrared (FTIR) revealed specific functional groups like –OH carboxylic acid, C=C alkenes, C=O esters, methyl (CH3-), and methylene (-CH2-). Gas Chromatography-Mass Spectrometry (GC-MS) analysis identified prominent compounds: methyl palmitate (12.53%), methyl vacsenate (16.44%), and, notably, methyl oleate (41.08%). This underscores the potential of Aspergillus oryzae lipase as an effective biocatalyst for UCO transesterification, yielding valuable methyl esters or biodiesel.
POLA PERTUMBUHAN DAN KEANEKARAGAMAN GASTROPODA PADA EKOSISTEM MANGROVE DI KONAWE SELATAN, INDONESIA Sri Ayu Ningsih; Armadi Chairunnas; Hilda Ayu Melvi Amalia; Agusrinal Agusrinal; Samsi Burhan; Aqmal Khaery
Biokatalis : Jurnal Ilmu Biologi dan Pendidikan Biologi Vol. 1 No. 1 (2024): TERBITAN JANUARI
Publisher : LPPM UNIVERSITAS NAHDLATUL ULAMA SULAWESI TENGGARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69972/biokatalis.v1i1.27

Abstract

Hutan mangrove adalah sebutan untuk sekelompok tumbuhan yang hidup di daerah pasang surut pantai. Hutan mangrove dikenal juga dengan sebutan hutan payau.  Desa Akuni yang disebabkan oleh aktifitas masyarakat dengan mengekploitasi hutan untuk dijadikan lahan pertambakan serta pemanfaatan pohon dari jenis mangrove sebagai bahan bakar atau perabot rumah tangga sehingga terjadi kerusakan atau terdegradasinya hutan mangrove tersebut. Penelitian ini bertujuan untuk mengetahui pola pertumbuhan dan keanekaragaman gastropoda pada ekosistem mangrove di konawe selatan.  Alat-alat yang digunakan pada penelitian ini antara lain termometer, hand refractometer, GPS, kantong sampel (cool box), parang, patok kayu, meteran roll, tali rafia, soil tester, kamera digital, pH meter, timbangan Ohaus, Vernier Caliper, oven, dan tanur. Bahan-bahan yang digunan dalam penelitian ini yaitu gastropoda, alkohol 70%, aquades, sampel air laut, serta sedimen. Pengambilan sampel gastropoda dilakukan pada saat air surut dengan membuat plot berukuran 20x20 sebanyak 2 buah. Sampel gastropoda diidentifikasi di Laboratorium Ekologi dan Taksonomi Jurusan Biologi FMIPA Unhalu. Parameter lingkungan yang diukur antara lain suhu, salinitas, pH, dan KOT. Analisis data menggunakan rumus BT = a(PC)b. Hasil penelitian menunjukkan Gastropoda yang ditemukan di desa Akuni adalah10 jenis. Tipe substrat pada plot 1 adalah pasir berlumpur. Hasil analisis regresi menunjukkan gastropoda yang ditemukan pada plot 1 dan 2 di desa Akuni termasuk kedalam pola pertumbuhan alometrik negatif (b<3)
DIVERSITAS GASTROPODA PADA EKOSISTEM MANGROVE DI TELUK KENDARI Aswir Aswir; Armadi Chairunnas; Samsi Burhan; Agusrinal Agusrinal; Aqmal Khaery; Wandy Murti Prasetya
Biokatalis : Jurnal Ilmu Biologi dan Pendidikan Biologi Vol. 1 No. 1 (2024): TERBITAN JANUARI
Publisher : LPPM UNIVERSITAS NAHDLATUL ULAMA SULAWESI TENGGARA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Tujuan penelitian ini adalah untuk mengetahui keanekaragaman dan kepadatan Gastropoda pada ekosistem mangrove Teluk Kendari. penelitian ini menggunakan metode transek plot kuasrat. Sampel dari penelitian ini adalah jenis-jenis gastropoda yang ditemukan dalam plot pengamatan pada ekosistem mangrove di Teluk Kendari. variabel yang diamati adalah keanekaragaman jenis Gastropoda yang terdapat dalam plot pengamatan pada setiap stasiun penelitian. Paraneter yang dianalisis indeks kelimpahan, indeks dominasi dan indeks keanekaragaman. Hasil penelitian menunjukkan total Gastropoda yang ditemukan pada empat stasiun sebanyak 6 jenis. Jenis Pirenella cingulata, Cassidula aurisfelis, Auriculastra subula, Pythia plicata, Pirenella sp, dan Salinator fragilis. Nilai indeks dominasi Gastropoda pada ekosistem mangrove di Teluk Kendari berdasarkan perhitungan Simpson pada stasiun l adalah 0,266897 berarti tidak ada jenis yang mendominasi pada ekosistem mangrove Teluk Kendari, perhitungan Simpson pada stasiun ll adalah 0,295573 berarti tidak ada jenis yang mendomiasi. selanjutnya hasil perhitungan Simpson pada stasiun lll adalah 0,255425 berarti tidak ada jenis yang mendominasi, dan terakhir hasil perhitungan Simpson pada stasiun lV adalah 0,251504 berarti tidak ada jenis yang mendominasi pada ekosistem mangrove Teluk Kendari. Nilai indeks keanekaragaman Gastropoda pada ekosistem mangrove di Teluk Kendari berdasarkan perhitungan Shannon-Wienner pada stasiun l dalam kategori sedang  dengan nilai H’ sebesar 1,49. Pada stasiun ll dalam kategori sedang dengan nilai H’ sebesar 1,37. Selanjutnya pada stasiun lll dalam kategori sedang dengan nilai H’ sebesar 1,48, dan yang terakhir pada stasiun lV dalam kategori sedang dengan nilai H’ sebesar 1,51
Co-Authors Agusrinal Agusrinal Andhika Puspito Nugroho Aqmal Khaery Aqmal Khaery Arniah Dali Wela Aswir Aswir Ayu Andini Puspitasari Habil Hamid Hilda Ayu Melvi Amalia Hilda Ayu Melvi Amalia Hilda Ayu Melvi Amelia La Ode Ismail Murni Murni Nasriadi Dali Nurhalisa Nurhalisa Samsi Burhan Seniwati Dali Seniwati Dali Seniwati Dali Seniwati Dali Sri Ayu Andini Puspitasari Sri Ayu Andini Puspitasari Sri Ayu Andini Puspitasari Sri Ayu Andini Puspitasari Sri Ayu Ningsih Sri Rahayu Amandari Syahruddin Syahruddin Tamaulina Br Sembiring Wandy Murti Prasetya Wandy Murti Prasetya