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All Journal The Journal of Pure and Applied Chemistry Research Jurnal Fisika Unand Jurnal Ilmiah Teknik Industri MITRA: Jurnal Pemberdayaan Masyarakat Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Molluca Journal of Chemistry Education (MJoCE) Archipelago Engineering Innovation for Community Service Journal
Nikmans Hattu
Chemistry Department, Faculty Of Mathematics And Natural Science - Pattimura University
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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Performance of Caffeine Content Analysis in Robusta sp and Theobroma cacao L using Iodometry, UV-Vis Spectrophotometry and High Performance Liquid Chromatography Yeanchon H. Dulanlebit; Nikmans Hattu; Ritti P. Sangadji; Risma Mahulette; Nataniel Kelmanutu; Sandriliati Asari
The Journal of Pure and Applied Chemistry Research Vol 9, No 3 (2020): Edition September-December 2020
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2020.009.03.535

Abstract

Caffeine is a xanthine alkaloid compound found in Robusta sp and Theobroma cacao L. The caffeine extract was obtained by evaporating CHCl3 using a rotary evaporator and determine its content using iodometry, UV-Vis spectrophotometry and High Performance Liquid Chromatography, then validated by measurement methods. The iodometric caffeine content in Theobroma cacao L is 900 mg/kg while UV-Vis spectrophotometry is 4,000 mg/kg, and for HPLC in Robusta sp is 19,475 mg/kg. The iodometry performance gives the linearity value, R2 of 0.9791. The precision values at 5.0 mg/L and 15.0 mg/L are 4.6% and 8.3%. Accuracy for 5.0; 10.0; and 15.0 mg/L are 106%, 100% and 94% respectively. The  performance of UV-Vis spectrophotometry gives  linearity value, R2 of 0.9948. The precision value at 1.0 mg/L and 6.0 mg/L gives the variance coefficient value of 4.2% and 1.2%, while the accuracy at 1.0 mg/L and 6.0 mg/L are 99% and 101%.
ANALISIS KADAR KALSIUM (Ca) DAN FOSFOR (P) PADA DAUN KECIPIR (Psophocarpus tetragonolobus L) DI PULAU AMBON DAN SERAM BAGIAN BARAT Tryvena Lesnussa; Nikmans Hattu; Yeanchon H Dulanlebit
Molluca Journal of Chemistry Education (MJoCE) Vol 9 No 1 (2019): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol9iss1pp46-54

Abstract

One of the leaves that can be consumed to fill nutritional need for people’s is kecipir leaves (Phosphocarpus tetragonolobus L). This leave contains minerals among them caloium, potassium and phosphorus but the level is calcium potassium and phosphorus at kecipir not yet know. Therefor this study was making conduoted to find out level of caloium, potassium and phosphorus in kecipir leave at two different location that is Urimesing village and Eti village. Calcium and potassium levels are analyzed SSA while phosphorus levels are analyzed UV-VIS analysis result indicate calcium, potassium, phosphorus level in kecipir leaves at urimeseng village is 904,25 mg/100g, is 100,46 mg/100g and calcium potassium, phosphorus levels in kecipir leave at Eti village is 1.162,59 mg/100g and 190,498 mg/100g. based on these result obtained calcium, potassium and phosphorus levels with different values from each sampling location. This happened because of geographic location, soil structure and water content greatly affect the levels of calcium, potassium, and phosphorus.
ANALISIS TIMBAL DALAM LINDI (Leachate) SECARA KOAGULASI MENGGUNAKAN POLIALUMINIUM KLORIDA Astrianty Unwakoly; Nikmans Hattu; Yeanchon H Dulanlebit
Molluca Journal of Chemistry Education (MJoCE) Vol 9 No 1 (2019): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol9iss1pp38-45

Abstract

Leachate is a liquid arising from the decomposition of waste that has decayed due to the flow of external water into the landfill. Leachate can be toxic. generally, leachate contains several high inorganic metals, including lead. Lead is one type of heavy metal that has a high toxicity. This study aims to determine the initial concentration of lead (Pb) in leachate and the percent efficiency of polyaluminium chloride (PAC) coagulant in reducing lead levels in IPST Toisapu, Ambon City. Lead content was analyzed by coagulation using an atomic absorption spechtrophotometer (AAS). Coagulation is a chemichal process used to remove particles that can cause environmental pollution. The coagulant used is a polyaluminium chloride coagulant. The results of the analysis showed that the initial lead concentration at IPST Toisapu was 2.7670mg/L and the percentage of PAC coagulant efficiency was 500, 600, 700, 800 and 1000 mg/L respectively 61,59%; 69,92%; 73,55%; 77,17% and 84,79%. The results showed that PAC coagulant was effective in reducing lead levels in leachate.
ANALISIS KOMPONEN ASAM AMINO IKAN LAYANG DELES (Decapterus Makrosoma) HASIL OLAHAN TRADISIONAL BERDASARKAN LAMA PENYIMPANAN Vhindra Engson Lumamuly; Nikmans Hattu; Semuel Unwakoly
Molluca Journal of Chemistry Education (MJoCE) Vol 9 No 2 (2019): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol9iss2pp123-132

Abstract

The aim of this study was to determine the amino acid composition of traditional processed Layang Deles fish (Decapterus macrosoma) which was stored for 2 months. Analysis of amino acid content using by Ultra Performance Liquid Chromatography (UPLC) instrument after content of water and lipid in sample was removed. The results of the analysis showed that there was a change in the concentration of 15 amino acids measured ranging from 85.17% to 2,873.42% in acid hydrolysis and 88.18% to 28.73% in alkaline hydrolysis. The biggest changes occurred in histidine, arginine and serine amino acid concentrations of 2,873.42%, 2,606.74% and 900.00% in acid hydrolysis and in amino acids serine, aspartic acid and histidine which were 88.17%, 62, 99% and 40.02% in alkaline hydrolysis. Based on the results of the research, it can be concluded that the processing of inmana fish with a storage period of 2 months affects the amino acid components of Layang Deles fish (Decapterus macrosoma).
An Ergonomic Intervention to Redesign Fish Smoking Device of Home Industry Robert Hutagalung; Victor Oryon Lawalata; Nikmans Hattu
Jurnal Ilmiah Teknik Industri Vol. 21, No. 1, June 2022
Publisher : Department of Industrial Engineering Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jiti.v21i1.17434

Abstract

Smoke and heat become the contributors for increasing temperature and humidity in the production room, and workload of workers, and decreasing work productivity of a smoked fish home industry in Hative Kecil Village, Ambon City, Indonesia. This paper was aimed to redesign a fish smoking device with ergonomic consideration for solving the problem. An ergonomic intervention method applied to redesign the device. Redesign process describe result of ergonomic assessment in to the stages of rational method in order to produce new design. Despite the environmental variable (temperature and humidity), 10 male workers (age 40-50 year) were assessed their characteristics consisting of personal, anthropometric, workload and work productivity data. Final results presented a decreasing temperature (15.03%), humidity (8.06%), and workload of workers (75.89%) while work productivity increased 88.92%. It concluded that the device redesign can improve temperature, humidity, workload of workers and work productivity in the smoked fish home industry.
Peningkatan Nilai Ekonomis Kelapa melalui Pembuatan Cuka dari Air Kelapa di Desa Morella Mirella Fonda Maahury; Catherina M. Bijang; Matheis F. J. D. P. Tanasale; Nikmans Hattu; Fensia A. Souhoka; Mario R. Sohilait
MITRA: Jurnal Pemberdayaan Masyarakat Vol. 7 No. 1 (2023): Mitra: Jurnal Pemberdayaan Masyarakat
Publisher : Institute for Research and Community Services

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/mitra.v7i1.3213

Abstract

Vinegar is a seasoning that gives food a sour taste. Vinegar is obtained from the fermentation of ethanol by bacteria anaerobically. Ingredients that can be used to make alcoholic fermentation include dates, rice, and coconut water. Young coconut water is directly consumed, while coconut water from ripe fruit is disposed of as waste. Morella village is located on the coast of the island of Ambon, where coconut plants are in abundance. The abundance of this coconut plant is directly proportional to the old coconut water that is dumped into the environment. To decrease the coconut water waste, it is necessary to conduct training on making vinegar from coconut water for the people of Morella village. This community service was carried out based on counseling and training on making vinegar for the Morella Village people. Counseling was done to convey the benefits of Vinegar and how to make it. The training was carried out by demonstrating the procedure for making vinegar and providing tools and materials to partners and videos to produce vinegar independently. The results of vinegar products from Morella Village are reported to the service team and used as evidence of the success of the vinegar-making training. The results provide information that vinegar are products that the people of Morella village can cultivate as an opportunity to increase their economy.
ANALYSIS OF ACID MIXTURE COMPARISON ON THE PROCESS OF DESTRUCTION OF LEAD METAL (Pb) ON SAMPLE OF CARPET SHELL’S MEAT (Ruditapes variegatus) Jola Latupeirissa; Nikmans Hattu; Semuel S. Pada; Vonny W. Soplanit
Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Vol. 5 No. 2 (2023): Penelitian Kimia dan Terapannya
Publisher : Program Studi Kimia, Fakultas MIPA, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/jc.v5i2.3076

Abstract

ABSTRACT Analysis of the acid mixture ratio in the lead (Pb) metal deconstruction process in carpet shell’s meat samples (Ruditapes variegatus). In the deconstruction agent HNO3 : HCl (1:3), the average lead metal concentration contained in sweet clam meat is 4.6305 ± 1.066 mg/kg and for the HNO3 : H2SO4 (3:1), the average lead metal concentration contained in the same sweet clam meat was 5.6516 ± 2.556 mg/kg. Statistical test results showed no significant difference in the dissolving power of the acid mixture HNO3 : HCl (1:3) and HNO3 acid mixture: H2SO4 (3:1) as seen from the p>0.005 value, so both the HNO3 acid mixture: HCl (1:3) and HNO3 acid mixture: H2SO4 (3:1) can be used to deconstruct Pb metal in sweet clam meat (Ruditapes variegatus) because there is no significant difference in the two acid mixtures.
Pelatihan Pembuatan Cuka Kelapa dari Air Kelapa Kepada Ibu-Ibu PKK Negeri Kilang Jolantje Latupeirissa; Ivonne Telussa; Nikmans Hattu; Stephanie Sohilait; Marsela Susan Laratmase
Innovation for Community Service Journal Vol 1 No 2 (2023): Oktober 2023
Publisher : Department of Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/icsj.v1i2.8526

Abstract

Pelatihan pembuatan cuka kelapa telah dari air kelapa dilaksanakan kepada ibu-ibu PKK Negeri Kilang, Kecamatan Leitimur Selatan, Kota Ambon. Tahap-tahap kegiatan pelatihan dilaksanakan dalam tiga tahap yaitu persiapan, pelaksanaan, dan evaluasi. Pada tahap persiapan, tim melakukan survei pendahuluan untuk mengetahui kondisi lapangan, tempat/lokasi yang digunakan. Selanjutnya tim menyiapkan bahan dan perlengkapan yang digunakan untuk pembuatan cuka kelapa. Pada tahap pelaksanan, tim melakukan penyuluhan kepada ibu-ibu PKK dengan menyampaikan materi tentang cara pembuatan cuka kelapa dan manfaat cuka kelapa. Kemudian dilanjutkan dengan proses pembuatan cuka kelapa. Air kelapa bersih dimasukkan dalam stoples, ditambahkan ammonium sulfitt dan ragi, diaduk, dan ditutup, kemudian dibiarkan selama 6 hari untuk terjadi proses fermentasi (proses fermentasi). Setelah 6 hari hasil fermentasi dipanaskan untuk memisahkan cuka dengan alkohol. Larutan yang tertinggal merupakan cuka sedangkan alkohol telah menguap. Pada tahapan ini seluruh peserta dilatih bagaimana cara membuat cuka kelapa. Tahap ketiga yaitu tahap evaluasi, dilakukan untuk mengukur tingkat keberhasilan kegiatan yang telah dilakuka. Hal ini dapat dilihat dari antusias dan semangat peserta dalam membantu proses pembuatan cuka tersebut. Luaran yang dihasilkan adalah produk kreatifiitas tanaman kelapa yaitu cuka kelapa yang telah dibuat ibu-ibu PKK Negeri Kilang untuk dapat dimanfaatkan sehari-hari.
SEPARATION OF ETHANOL-WATER AZEOTROPE MIXTURES USING EXTRACTIVE DISTILLATION METHOD Muhammad Ikhsan Taipabu; Wei Wu; Karthickeyan Viswanathana; Nikmans Hattu; Ervina Rumpakwakra; Micky Kololu
ALE Proceeding Vol 6 (2023): Archipelago Engineering
Publisher : Fakultas Teknik Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ale.6.2023.198-203

Abstract

Extractive distillation is a specialized distillation process that involves adding an additional component (extractive agent or solvent/entrainer) to the mixture in order to alter the relative volatilities of the components and enable their separation, even when they form azeotropes. This technique is commonly used to separate azeotropic mixtures, such as ethanol-water azeotropes. The ethanol-water azeotrope is a well-known example, where the mixture contains around 95.6 wt% ethanol and 4.4 wt% water. Traditional distillation methods cannot separate these components efficiently due to the azeotropic behavior. However, extractive distillation offers a solution by introducing a third component (entrainer) that forms a ternary azeotrope, which has different properties compared to the binary azeotrope (ethanol-water). This study presents the effect of the operating parameters (e.g., column configuration, pressure, entrainer type) on energy consumption while the purity of ethanol is set to 99.5 wt%. Appropriate entrainers (i.e., glycerol, ethylene glycol) are chosen to extract water from methanol at different compositions. The optimum design of ethanol-water azeotrope separation is obtained by using sensitivity analysis in Aspen Plus simulation. The results indicate the trade-off between solvent and reboiler duty consumption. An advanced comparison study is recommended, including the mixing of both solvents as entrainer.
Ekstraksi dan Karakterisasi Senyawa Besi Oksida dari Batuan Vulkanik Pulau Ambon menggunakan Metode Kopresipitasi Gede Wiratma Jaya; Delpina Nggolaon; Nikmans Hattu
Jurnal Fisika Unand Vol 13 No 1 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.1.159-169.2024

Abstract

Senyawa besi oksida pada batuan vulkanik Pulau Ambon memiliki potensi untuk dimanfaatkan sebagai material maju di masa depan. Untuk memanfaatkan potensi tersebut diperlukan sebuah usaha dengan cara mengekstraksi senyawa besi oksida. Pada penelitian ini metode kopresipitasi digunakan untuk mengekstraksi senyawa besi oksida. Hasil ekstraksi kemudian dikarakterisasi menggunakan beberapa instrumen seperti X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), dan Scanning Electron Microscope (SEM). Hasil karakterisasi menunjukkan senyawa besi oksida yang dihasilkan memiliki tingkat kemurnian dibawah 50%. Fasa mineral oksida yang terdeteksi dari data XRD adalah magnetit (Fe3O4), maghemit (-Fe2O3), dan hematit (-Fe2O3). Ukuran kristal secara rata-rata dibawah 15 nm dengan ukuran partikel rata-rata diatas 700 nm. Struktur morfologi permukaan terdapat aglomerasi dengan bentuk permukaan yang bulat. Hasil ini menunjukkan metode kopresipitasi telah berhasil mendapatkan senyawa besi oksida dari batuan vulkanik Pulau Ambon.
Co-Authors Astrianty Unwakoly Catherina M. Bijang Delpina Nggolaon Dulanlebit, Yeanchon H. Ervina Rumpakwakra Fensia A. Souhoka Gede Wiratma Jaya Ivonne Telussa Jola Latupeirissa Jolantje Latupeirissa Karthickeyan Viswanathana Maahury, Mirella Fonda Mario R. Sohilait Marsela Susan Laratmase Matheis F. J. D. P. Tanasale Micky Kololu Muhammad Ikhsan Taipabu Nataniel Kelmanutu Risma Mahulette Ritti P. Sangadji Robert Hutagalung Sandriliati Asari Semuel S. Pada Semuel Unwakoly Stephanie Sohilait Tryvena Lesnussa Vhindra Engson Lumamuly Victor Oryon Lawalata Vonny W. Soplanit Wei Wu Yeanchon H Dulanlebit