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Ivonne Telussa
Chemistry Department, Science And Mathematics Faculty, Universitas Pattimura
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Ekstraksi Dan Karakterisasi Kitosan Dari Kulit Udang Windu (Penaeus monodon) Serta Proses Depolimerisasi Kitosan Dengan Hidrogen Peroksida Berdasarkan Variasi Suhu Pemanasan Tanasale, Matheis F.J.D.P.; Telussa, Ivonne; Sekewael, Serly J.
Indonesian Journal of Chemical Research Vol 3 No 2 (2016): 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.2016.3-mat

Abstract

An extraction of chitin from shell of the tiger shrimp (Penaeus monodon), a convertion chitin into chitosan and depolymerization chitosan into oligochitosan using hydrogen peroxide based on variations in heating temperature have been done. Chitosan had depolymerized and it’s molecular weight had tested by end group analysis method and it’s degree of deacetylation had tested by UV-Vis spectrophotometry method. Oligochitosan had obtained from the conversion of chitin is isolated from the shell of tiger shrimp and from commercial chitin. The content of chitin obtained in tiger shrimp shells was 35.90% while the result of the conversion of commercial chitin into chitosan amounted to 62.33%. Characterization of functional groups using FTIR spectrophotometry showed that the conversion of chitosan from chitin commercial have absorption bands of 3617.56 (OH), 3050.47 - 3127.63 (-NH stretching), 2894.24 (-CH methylene), 1679.06 (-C = O), 1564.30 (-NH bending), and 1076.30 cm-1 (-CO-). The commercial chitosan which is characterized by FTIR spectrophotometric method also supports the results of the conversion of chitosan from chitin commercial. In the process of depolymerization of chitosan by hydrogen peroxide was found that the greater heating temperature was used, the smaller the percent yield and molecular weight of oligochitosan were at 40 oC, 50 oC, 60 oC and 70 oC gained weight average molecular oligochitosan were 1030.12 g/mol, 1019, 28 g/mol, 978.12 g/mol, and 908.82 g/mol, respectively
Morphological Observation, Identification and Isolation of Tropical Marine Microalgae from Ambon Bay, Maluku Telussa, Ivonne; Hattu, Nikmans; Sahalessy, Arielno
Indonesian Journal of Chemical Research Vol 9 No 3 (2022): Edition for January 2022
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598//ijcr.2022.9-ivo

Abstract

Microalgae are photosynthetic microorganisms that are widely distributed in waters. They have the potential as an alternative source of pigments, lipids, proteins, and carbohydrates. In this study, identification and isolation of single-cell microalgae from Ambon Bay were carried out by serial dilution method and inoculation of the culture by appearance/spread on the surface of the solidified agar medium. The results showed that the waters of Ambon Bay have physical parameters such as temperature, pH, salinity, and TDS, which are still within the threshold specified in the seawater quality standard for biota. The water conditions at the 10 sampling locations had different salinity, pH, temperature, and TDS. This condition affects the distribution of microalgae in the waters in Ambon Bay. The image from light microscopy shows that there are 27 species of microalgae scattered in the waters of Ambon Bay, which belong to the classes Chlorophyceae, Flagilariophyceae, Bacillariophyceae (diatoms), Coscinodiscophyceae, and Dinophyceae. Microalgae isolation obtained five species (single-cell) including four species from the class Bacillariophyta (Navicula sp, Nitzschia sp, Cyclotella sp) and one species from the class Chlorophyta (Chlorella sp).
Bioethanol Production From Tropical Marine Microalgae Ambon Bay Navicula sp. of The Inner Ambon Bay Strain Telussa, Ivonne; Fransina, Eirene G.; Singerin, Joisana; Taipabu, Muhammad Ikhsan
Indonesian Journal of Chemical Research Vol 10 No 3 (2023): Edition for January 2023
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598//ijcr.2023.10-ivo

Abstract

Microalgae are photosynthetic microorganisms that contain carbohydrates can be converted into glucose through a hydrolysis process so that they can be used as raw materials for bioethanol production. Navicula sp. strain TAD is a type of marine microalgae that is spread in the inner Ambon Bay (TAD) sea waters and is used to manufacture bioethanol. This study aims to determine the content of carbohydrates and bioethanol produced from tropical marine microalgae Ambon bay Navicula sp. strain TAD. The research was conducted through several stages, namely the cultivation of Navicula sp. strain TAD to obtain biomass, determine carbohydrate content in biomass, hydrolyze biomass and manufacture bioethanol through a fermentation process using Saccharomyces cerevisiae. The results showed that Navicula sp. strain TAD cultivation for seven days had the highest cell density of 72.167 × 105 ± 0.946 cells mL-1 with dry biomass of 0.933 ± 0.062 g and productivity of 0.166 ± 0.011 gL-1 hour-1. The sulfuric acid hydrolysis process was analyzed for a sugar content of 146.5695 ± 0.758 mg. A fermentation process follows the results of the hydrolysis to produce bioethanol. The bioethanol content obtained was 6.357%. These indicated that Navicula sp. strain TAD has the potential to produce bioethanol
Pemanfaatan Buah Kelapa sebagai VCO di SMK Negeri 6 Ambon Pentury, Evangeline; Telussa, Ivonne; Kapelle, Imanuel Berly Delvis; Tehubijuluw, Hellna; Souhoka, Fensia Analda; Runtu, Irwan
Innovation for Community Service Journal Vol 2 No 2 (2024): Oktober 2024
Publisher : Department of Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/icsj.v2i2.15691

Abstract

VCO atau Virgin Coconut Oil, adalah minyak kelapa murni yang diekstrak dari daging kelapa segar tanpa melalui proses pemanasan. VCO semakin populer sebagai produk alami yang multifungsi, baik untuk konsumsi maupun perawatan kecantikan. Tujuan dari pembuatan VCO ini adalah untuk memberikan informasi pemanfaatan hasil kelapa yang berupa santan yang dapat diolah kembali menjadi minyak VCO yang memiliki nilai jual yang tinggi dan memiliki kegunaan sebagai obat maupun untuk produk kecantikan. Pemateri bersama mitra melakukan praktek bersama yang diawali dengan melakukan demo pembuatan VCO oleh pemateri kemudian akan diikuti oleh para siswa SMK Negeri 6 Ambon. Prosedur pembuatan dimulai dari kelapa yang kering diparut, diperas lalu didiamkan selama 4 jam untuk memisahkan santan kental dan air. Santan kemudian didiamkan kembali selama 24 jam sampai terbentuk 3 lapisan yaitu air, minyak dan ampas santan. Minyak yang didapat dipisahkan lalu disaring dan dimasukkan kedalam botol kemasan. VCO siap untuk dikonsumsi dan dijual. Tahapan-tahapan pembuatan VCO dapat diikuti dengan baik oleh para siswa SMK Negeri 6 Ambon.
Fatty Acid and Amino Acid Profile of Mancadu Clam (Atrina vexillum) in Waai Village Salamony, Meilita; Sohilait, Hanoch Julianus; Telussa, Ivonne
Indonesian Journal of Chemical Research Vol 13 No 1 (2025): Edition for May 2025
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2025.13-mei

Abstract

Mancadu clam (Atrina Vexillum) is a food source for Maluku coastel communities with high nutritional value and contains various bioactive components, including fatty acids and amino acids. This study analyzed the content of fatty acids and amino acids in mancadu clams (Atrina Vexillum) in Waai village. Fatty acid analysis was carried out through a maceration extraction process with the Shaking Incubator method and transesterification using the microwave. Amino acid analysis was carried out by hydrolysis for 12 hours. The results of the research, the fatty acids of mancadu clams contain 7 fatty acid components, consisting of 2 saturated fatty acids, namely hexadecanoic or methyl palmitate, which is the most significant component (17.61%) and heptadecanoic acid (13.43%). Unsaturated fatty acids are hydrosinnamic acid (15.01%), 5,8,11,14- eicosatetranoic acid/omega-6 fatty acid (7.2%), octadecanoic acid (6.65%), 9-Octadecanoic acid (5.1%) and 8,11-eicosadinoic acid or FUPA (4.68%). The results of amino acid analysis of mancadu clams (Atrina Vexillum) on 18 amino acids obtained 6 types of essential amino acids namely leucine, valine, isoleucine, threonine, methionine and arginine which the largest compound from acid hydrolysis (1150.94 mg/Kg). There are 7 types of nonessential amino acids: glutamic acid, alanine, serine, glycine, aspartic acid, and proline.
Pengolahan Nata de Coco sebagai Produk Potensial Limbah air Kelapa Asal Desa Tial Kecamatan Salahutu Hasanela, Nurani; Telussa, Ivonne; Kapelle, Imanuel Berly Delvis; Sohilait, Mario Rowan; Maahury, Mirella Fonda; Rahayu, Rahayu
Innovation for Community Service Journal Vol 1 No 1 (2023): April 2023
Publisher : Department of Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/icsj.v1i1.8392

Abstract

Masyarakat Tial memiliki lahan perkebunan kelapa yang sangat luas. Kekayaan alam ini menjadi salah satu sumber alam yang dapat dimanfaatkan oleh masyarakat. Pemanfaatan limbah buah kelapa oleh masyarakat tial merupakan salah satu alternative peningkatan nilai ekonomis buah kelapa. Masyarakat tial memiliki prospek yang besar dalam meningkatkan perekonomian dengan pengolahan limbah air kelapa menjadi produk potensial. Untuk itu dengan program pengabdian masyarakat, Jurusan kimia FMIPA mengembangkan produk-produk berbasis pemanfaatan kelapa salah satunya yaitu produk Nata de coco. Nata de coco merupakan produk microbial secara fermentasi yang memiliki nilai gizi yang cukup tinggi. Pembuatan Nata de Coco memerlukan waktu sekitar 7 sampai 14 hari. Hasil yang didapatkan memberikan ketebalan dan warna yang sangat baik sehingga produk ini menjadi bahan yang dapat diusahakan oleh masyarakat desa Tial sebagai peluang peningkatan perekonomian mereka.
Enhancing Dye-Sensitized Solar Cell Efficiency Using Photosynthetic Pigments from Navicula sp. TAD Telussa, Ivonne; Maahury, Mirella Fonda; Lilipaly, Eka Rahmat Mahayani Anthonia Putera; Latuihamallo, Threbelin Anacovic Lawdrian
Jurnal Teknik Kimia dan Lingkungan Vol. 9 No. 2 (2025): October 2025
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jtkl.v9i2.7179

Abstract

Microalgae Navicula sp. TAD is a microscopic plant that has the potential to serve as an alternative source of pigments, requiring relatively short cultivation time, making it suitable for use as a sensitizer in dye-sensitized solar cells. This research aimed to isolate, characterize, and identify the photosynthetic pigments of Navicula sp. TAD, and subsequently test its photoelectric capability as a sensitizer material in solar cells. The study involved cultivating Navicula sp. TAD cells to obtain biomass, isolating pigments from dry biomass, purifying pigments using column chromatography techniques, characterizing pigments by scanning visible light absorption patterns, and fabricating solar cells with TiO2 paste, followed by testing the photoelectric capabilities of the solar cells. From the research, pigments such as β-carotene, chlorophyll a, xanthophyll, and chlorophyll c were obtained, with chlorophyll a and carotenoid contents of 29.9698 μg/mL and 18.4255 μg/mL, respectively. Solar cells sensitized with photosynthetic pigments showed the best photoelectric performance with crude pigment extract at a concentration of 30×10³ ppm, yielding Short-circuit current density (ISC) 1.93×10⁻⁵ A;  open-circuit voltage (VOC) 0.0465 V; fill factor (FF).58; and efficiency (η) 8.33×10⁻² %. Meanwhile, variations in pigment concentration of chlorophyll and xanthophyll at a ratio of 0:100 yielded ISC 9.96×10⁻⁵ A; VOC 0.1004 V; FF 0.45; and η 7.24×10⁻¹ %.
Introduction to Drinking Water Quality Standards for Communities in Poka Village, Teluk Ambon District Rumpakwakra, Ervina; Hattu, Nikmans; Jaya, Gede Wiratma; Nggolaon, Delpina; Rikumahu, Marcia Violetha; Thohirah, Afifah; Silahooy, Stevi; Latupeirissa, Jolantje; Telussa, Ivonne; Pada, Samuel Simra; Kololu, Micky
Jurnal Pengabdian Magister Pendidikan IPA Vol 7 No 1 (2024): Januari - Maret
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v7i1.6564

Abstract

The quality of clean water used has been a top priority to maintain health and fulfill daily needs. There are many sources of clean water, including well water, bottled water, gallon water and PDAM water. The use of clean water in Poka Village still uses well water and gallon water, so there is concern among the community regarding the cleanliness and quality of the water. Therefore, this service is carried out to help answer public anxiety by introducing Drinking Water Quality Standards that have been determined in the Republic of Indonesia Minister of Health Regulation No. 492/MENKES/PER/IV/2010. Apart from that, we also show findings of polluted well water and also provide solutions on how to care for wells. During material delivery activities, we use an educational and participatory approach with the main focus being the community. The result of this service activity is that the community in Poka Village has good knowledge regarding drinking water quality standards so that it is hoped that the community can apply them in their daily lives.
Utilization of Diatom Frustule Waste from Navicula sp. TAD as Photoelectrode Material for Enhancing the Efficiency of Dye-Sensitized Solar Cells (DSSC) Telussa, Ivonne; Tehubijuluw, Hellna; Lilipaly, Eka Rahmat Mahayani Anthonia Putera; Malle, Dominggus; Amarduan, Riona Magdalena
Science and Technology Indonesia Vol. 11 No. 2 (2026): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2026.11.2.632-642

Abstract

Navicula sp. TAD is a microalga with silica-based cell walls, offering potential to improve photon interaction in dye-sensitized solar cells (DSSCs). This study combined Navicula sp. TAD frustules with TiO2 to fabricate DSSC working electrodes. The objectives were to isolate and characterize the frustules, optimize the TiO2–frustule ratio, and evaluate photoelectric performance. The workflow consisted of cultivating Navicula sp., isolating pigments and frustules, fabricating solar cells with varied electrode compositions, and performing photoelectric testing under a solar simulator. Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), and Scanning Electron Microscope (SEM) analysis confirmed that the frustules possess nanoporous surfaces and exhibit Si–O–Si and Si–OH functional groups. Electrodes incorporating TiO2–frustule blends showed compact pore networks, along with additional functional groups. Performance screening across compositions identified an optimal TiO2–frustule ratio of 40:60, which delivered an efficiency of 10.51%, a short-circuit current density of 0.673 A, an open-circuit voltage of 301.8 mV, and a fill factor of 0.32. These findings indicate that frustule-enabled light management and surface chemistry can jointly enhance dye loading and charge collection in DSSC photoanodes relative to TiO2 alone.
RESPONS PERTUMBUHAN CHLORELLA sp. TERHADAP PENAMBAHAN LIMBAH CAIR ORGANIK PADA MEDIUM KULTIVASI Geraldi Rahanra; Ivonne Telussa; Ervina Rumpakwakra; Alif Nur Laili Rachmah; Sabrianah Baddarudin; Tamaratritania Citta Trisnantari; Muhammad Ikhsan Taipabu
CHEMTAG Journal of Chemical Engineering Vol 7, No 1 (2026): CHEMTAG Journal of Chemical Engineering
Publisher : Universitas 17 Agustus 1945 (UNTAG) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/cjce.v7i1.7040

Abstract

Limbah cair pengolahan sagu dan tahu mengandung nutrien yang berpotensi dimanfaatkan untuk kultivasi Chlorella sp. Karakterisasi meliputi pH, Chemical Oxygen Demand (COD), total karbon (TC), total nitrogen (TN), dan total fosfor (TP), kemudian limbah cair ditambahkan ke dalam medium NaCl salinitas 28 ppt. Kultivasi dilakukan selama 24 hari pada intensitas cahaya 5000 lux dengan fotoperiode 12:12 jam. Air limbah pengolahan tahu menunjukkan kandungan nutrien lebih tinggi dibandingkan air limbah pengolahan sagu, dengan COD masing-masing 23,49 mg/L dan 12,65 mg/L. Konsentrasi sel maksimum diperoleh pada medium kontrol (MK) sebesar 38 × 10⁵ sel/mL (hari ke-21), diikuti perlakuan suplementasi air limbah pengolahan tahu (MLT) sebesar 34 × 10⁵ sel/mL dan air limbah pengolahan sagu (MLS) sebesar 24,9 × 10⁵ sel/mL. Suplementasi limbah cair tidak meningkatkan pertumbuhan dibandingkan kontrol, yang dapat dipengaruhi oleh kondisi pH asam, rasio C:N yang rendah, serta salinitas tinggi yang berpotensi menimbulkan stres osmotik. Meskipun demikian, kedua jenis limbah tetap mampu mendukung pertumbuhan mikroalga dan menunjukkan potensi integrasi kultivasi mikroalga dengan pengolahan limbah cair secara berkelanjutan.
Co-Authors Alfa Musa Imanuel Efruan Alif Nur Laili Rachmah Amarduan, Riona Magdalena Badaruddin, Sabrianah Catherina M. Bijang DOMINGGUS MALLE Eirene G Fransina Eirene G. Fransina Ervina Rumpakwakra Fensia Analda Souhoka Fransina, Eirene G. Gede Wiratma Jaya, Gede Wiratma Geraldi Rahanra Hanoch J Sohilait Hasanela, Nurani Hattu, Nikmans Hellna Tehubijuluw Joisana Singerin Jolantje Latupeirissa Jolantje Latupeirissa Joris, Shielda Natalia Kapelle, Imanuel B. D. Kololu, Micky Lapu, Petrus Latuihamallo, Threbelin Anacovic Lawdrian Latupeirissa, Jolantje Lilipaly, Eka Rahmat Mahayani Anthonio Putera Maahury, Mirella Fonda Marcia Violetha Rikumahu Marsela Susan Laratmase Matheis F.J.D.P. Tanasale Muhammad Ikhsan Taipabu Nasution, Annio Indah Lestari Nggolaon, Delpina Nikmans Hattu Pada, Samuel Simra Pentury, Evangeline R, Irwan Rahayu Rosmawaty Rosmawaty Sahalessy, Arielno Salamony, Meilita SAMUEL M. TARIBUKA Sekewael, Serly J. Semuel S. Pada Serly J. Sekewael Seumahu, Cecelia A. Silahooy, Stevi Singerin, Joisana Sipahelut, Sophia G. Sohilait, Mario Rowan Stephanie P. Sohilait Stephanie Sohilait Taipabu, Muhammad Ikhsan Thohirah, Afifah Trisnantari, Tamaratritania Citta