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All Journal The Journal of Pure and Applied Chemistry Research Chemistry Indonesian Journal of Chemical Research Science Map Journal Molluca Journal of Chemistry Education (MJoCE)
Dulanlebit, Yeanchon H.
Departement Of Chemistry-FKIP, Pattimura University Ambon
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Environmental Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences

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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%.
STUDI KADUNGAN IODIUM DALAM RUMPUT LAUT EUCHEUMA COTTONII DIPERAIAN KEI KECIL R Untailawan; Y T Male; Y H Dulanlebit
Science Map Journal Vol 1 No 2 (2019): Science Map Journal
Publisher : Jurusan Pendidikan MIPA FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (997.863 KB) | DOI: 10.30598/jmsvol1issue2pp55-59

Abstract

Iodium berperan penting bagi pertumbuhan manusia. Kekurangan asupan iodium dapat menimbulkan berbagai penyakit. Kebutuhan asupan iodium dapat dipenuhi dengan mengkonsumsi pangan kaya iodium. Rumput laut eucheuma cottonii diketahui miliki kandungan iodium yang tinggi. Perarian Kei Kecil merupakan salah satu sentra pembudidayaan rumput laut eucheuma cottonii dikawasan timur Indonesai. Kandungan iodium dalam rumput laut sangat dipengaruhi oleh tempat pembudidayaannya. Penelitian ini dilakukan untuk memperoleh informasi tentang kandungan iodium dalam rumput laut eucheuma cottonii diperairan Kei Kecil. Penentuan kandungan iodium menggunakan metode spektrofotometri ultraviolet dengan mengoptimasi konsentrasi H3PO4 dan KI. Hasil penelitian menunjukan rata-rata kandungan iodium dalam rumput laut eucheuma cottonii yaitu 29,96 μg/g. Penelitian dilakukan pada λmaks 351 nm dengan konsentrasi optimum H3PO4 0,6 M dan KI 0,06 M.
Efektivitas Biji Kelor (Moringa Oleifera Lamk) Pada Pengolahan Air Sumur dan Penentuan Waktu Optimum Adsorpsi Biji Kelor Terhadap Fe dan Mg Dalam Air Yeanchon H Dulanlebit; Sunarti -; Yustinus T Male
Molluca Journal of Chemistry Education (MJoCE) Vol 10 No 1 (2020): 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/MJoCEvol10iss1pp43-52

Abstract

Biji kelor (Moringa oleifera Lamk) mengandung senyawa aktif rhamnoksiloksi benzil isotiosianat yang efektif dan digunakan untuk mengadsorpsi logam terlarut dalam air. Penelitian ini untuk menganalisis efektivitas biji kelor pada pengolahan air sumur dan waktu optimum adsorpsi serbuk biji kelor terhadap konsentrasi besi dan magnesium yang dianalisis secara spektrofotometer serapan atom. Parameter yang dianalisis untuk efektivitas biji kelor yaitu padatan terlarut (TDS), pH dan kesadahan. Hasil didapatkan bahwa air sumur memiliki TDS 346,874 mg/L, pH 6,85 dan kesadahan 422 mg/L. Efektivitas biji kelor dengan variasi pembubuhan 50, 100, 150 dan 200 mg masing-masing diperoleh TDS 4,132, 3,578, 4,968, dan 4,908 mg/L, pH 7,86, 7,91, 7,92, dan 7,94 serta kesadahan 284, 278, 272, dan 266 mg/L. Biji kelor efektif dan mampu menurunkan TDS dan kesadahan air. Untuk penentuan waktu optimum adsorpsi serbuk biji kelor dilakukan pada konsentrasi Fe(awal) dan Mg(awal) dalam air masing-masing 9,6677 dan 7,8156 mg/L dengan variasi waktu kontak 30, 60, 90, dan 120 menit. Hasil didapatkan kapasitas adsorpsi Fe masing-masing 90,482, 90,472, 91,882, dan 92,220 mg/Kg dimana Fe teradsorpsi optimum pada waktu kontak 120 menit dengan efisiensi adsorpsi 95,389% sedangkan kapasitas adsorpsi Mg masing-masing 15,703, 14,733, 15,108, dan 15,520 mg/Kg dimana Mg teradsorpsi optimum pada waktu kontak 30 menit dengan efisiensi adsorpsi 20,09%.
KAJIAN SPEKTROFOTOMETRI ULTRA VIOLET UNTUK ANALISIS SPESI IODIUM DALAM GARAM FORTIFIKASI Yeanchon H Dulanlebit
Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 1 (2011): 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/MJoCEvol1iss1pp64-71

Abstract

Iodine is an element nonmetal and essential micronutrient needed by human body in a trace amount. Iodine deficiency may cause brain damage, mental retardation, cretinism and endemic goiter. Analysis method of detecting iodine has widely been used, where iodometry analysis is a standard method to determine iodine content. The analytical performance of iodine determination with a sensitive and selective spectrophotometric method had been evaluated. Iodate reacted with the excessive iodide in an acid medium to form tri-iodide, which can be detected with spectrophotometry at 350 nm. The result of analytical performance evaluation of that method indicated a linearity of standards curve at the range of 1.0-10.0 mg/L, with the R2 value approached one. Result of research, content of iodine in iodized salt sample are 21.45 mg kg-1, 24.88 mg kg-1, 35.42 mg kg-1, 37.98 mg kg-1, 42.84 mg kg-1, dan 57.77 mg kg-1
PEMANFAATAN TANAMAN BAYAM (Amaranthus Tricolor L.) DI DESA WAIHERU SEBAGAI BIOINDIKATOR BERDASARKAN UMUR TANAM UNTUK MENDETEKSI KANDUNGAN TIMBAL Wahdayanti Wahdayanti; Yeanchon H Dulanlebit; Yeslia Utubira
Molluca Journal of Chemistry Education (MJoCE) Vol 2 No 2 (2012): 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/MJoCEvol2iss2pp112-120

Abstract

Telah dilakukan penelitian untuk mengetahui kandungan Pb pada batang dan daun tanaman bayam cabut (Amaranthus Tricolor L.) di desa Waiheru berdasarkan umur tanam yang dideteksi secara Spektrofotometri Serapan Atom (SSA). Hasil yang diperoleh pada batang tanaman bayam, kandungan Pb berkisar antara 0,451 – 1,931 mg kg-1 dengan kandungan Pb tertinggi yakni pada umur tanam 4 minggu pada daerah tepi jalan raya (1,931 mg kg-1). Sedangkan pada daun tanaman bayam, kandungan Pb berkisar antara 0,975 – 1,703 mg kg-1 dengan kandungan Pb tertinggi yakni pada umur tanam 4 minggu pada daerah jauh dari jalan raya (1,703 mg kg-1). Kandungan Pb pada batang dan daun tanaman bayam tidak melewati limit rekomendasi Pb pada makanan yang telah ditentukan oleh WHO yakni 2,0 mg kg-1
KOMPARASI MEDIA PEMBELAJARAN KOKAMI DAN MEDIA ULAR TANGGA MENGGUNAKAN MODEL PEMBELAJARAN LANGSUNG PADA MATERI STRUKTUR ATOM TERHADAP HASIL BELAJAR SISWA KELAS X SMA NEGERI 5 AMBON Imarsih Ninkeula; Y T Filindity; Y H Dulanlebit
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/MJoCEvol9iss2pp70-77

Abstract

Comparative study of learning media of mysterious card box with the media of snake ladder on the material of atomic structure to the result of study of class X student of SMA N 5 AMBON. The mysterious card learning media box is applied to the X class MIA1 and the ladder snake media in the X class of MIA3. From the results, the mysterious card learning media box can improve student learning outcomes, seen from the presentation of the achievement of the final test results obtained by the two classes, where the two classes have a presentation of different final result qualification ie qualification completed for class X-MIA1 which uses the mysterious card box learning medium is 100%, and no qualifying fails with an average rating of 85.68. But for the class X-MIA3 using the learning media of snake ladder with qualified thoroughly is 51.51% and qualification failed 48.49% with an average value of 72.95, therefore Mann Whitney test results using SPSS 20 obtained a significance value of 0.002 (> 0.05 ) thus H0 is rejected and H1 is received so it can be concluded that there are differences in student learning outcomes using the mysterious box learning media and learning media snake ladder
Studi Akumulasi Logam Berat Merkuri Menggunakan Tanaman Awar-Awar (Ficus Septica Burm F) Mariwy, Abraham; H. Dulanlebit, Yeanchon; Yulianti, Fian
Indonesian Journal of Chemical Research Vol 7 No 2 (2020): Edisi Bulan Januari (Edition for January)
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2020.7-abr

Abstract

This research aims to to study the ability of awar-awar plants ((Ficus Septica Burm. F)) to accumulate heavy metals. Awar-awar are grown in glass reactors and treated with 10 ppm mercury solution wich one, two, and three weeks in time variations. The analysis using CV-AAS showed that the total absorption of mercury heavy metals by awar-awar plants in reactors I, II and III was 81.7%, 34.6% and 85.4% respectively. When the phytoremediation process takes place the plant shows no symptoms of damage or even death even though it has accumulated more than 50% of mercury from the growing media. The BCF value of awar-awar plants in reactor I was 2.79 reactor II was 0.53 and reactor III was 0.55. While the TF values ​​in reactors I, II and III were 0.04; 1.13 and 0.97. The calculation results of BCF and TF values ​​show that Awar-awar plants (Ficus Septica Burm. F) can accumulate heavy metals of mercury so it is recommended to be used as a phytoremediation agent in mercury-contaminated soils.
Bioaccumulation of Lead Metal (Pb) by Mangrove Plants (Rhizopora apiculata) in the Waters of Poka Village, Inner Bay of Ambon Mariwy, Abraham; Dulanlebit, Yeanchon H; Ode, A.
Indonesian Journal of Chemical Research Vol 12 No 1 (2024): Edition for May 2024
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2024.12-mar

Abstract

This research aims to study the extent of bioaccumulation of the heavy metal Pb by mangrove plants (Rhizopora apiculata) in the waters of Poka Village, Ambon Bay. Mangrove plants were chosen because they can naturally accumulate heavy metals around their roots. In this study, sediment grains were measured using a Sieve Shaker, the content of Pb metal in sediment and parts of mangrove plants was determined using AAS, while the bioaccumulation value of Lead metal (Pb) by mangrove plants was calculated using the BCF and TF formulas. The results showed that the particle size in gravel ranged between 0.00-0.13%, sand 20.44-66.35%, and mud 33.65-79.56%. Lead (Pb) levels in Poka Village waters in sediment ranged from 10,925-16,925 mg/kg, roots ranged from 0.5-21.35 mg/kg, and leaves ranged from 0-4,675 mg/kg. Meanwhile, the BCF value at sampling point 1 = 0.03, sampling point 2 = 1.40 and sampling point 3 = 0.56, the TF value at sampling point 1 = 7.8, sampling point 2 = 0.03 and sampling point 3 = 0.09. This shows that mangrove plants function as phytoextraction and can be used as phytoremediation agents to accumulate the heavy metal lead (Pd) from waters.
Co-Authors Abraham Mariwy Imarsih Ninkeula Nataniel Kelmanutu Nikmans Hattu Ode, A. R Untailawan Risma Mahulette Ritti P. Sangadji Sandriliati Asari Sunarti - Wahdayanti Wahdayanti Y T Male Yuli Tamar Filindity Yulianti, Fian Yustinus T Male