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All Journal Chemistry Indonesian Journal of Chemical Research Molekul: Jurnal Ilmiah Kimia Jurna Beta Kimia Journal of The Indonesian Society of Integrated Chemistry
Kopon, Aloisius Masan
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Environmental Science Materials Science & Nanotechnology

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Skrining Fitokimia Senyawa Metabolit Sekunder Ekstrak Kombinasi Kulit Batang Kelor (Moringa oleifera) dan Rimpang Temulawak (Curcuma Xanthorrhiza) Asal Nusa Tenggara Timur Goa, Rio Fernando; Kopon, Aloisius Masan; Boelan, Erly Grizca
Jurnal Beta Kimia Vol 1 No 1 (2021): Volume 1, Nomor 1: Mei 2021
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jbk.v1i1.5168

Abstract

Kelor (Moringa oleifera) dan Temulawak (Curcuma xanthorrhiza) merupakan jenis tumbuhan herbal yang dapat tumbuh pada iklim tropis seperti di Indonesia khususnya Nusa Tenggara Timur. Kelor dan rimpang temulawak sudah secara luas digunakan oleh masyarakat karena memiliki aktivitas farmakologi. Aktivitas yang dimiliki oleh kedua jenis tanaman ini disebabkan oleh kandungan kimia yang terdapat dalam masing-masing tanaman. Eksplorasi terhadap khasiat berbagai jenis tanaman terus dilakukan salah satunya adalah dengan mengkombinasikan ekstrak setiap tanaman. Pada peneltian ini dilakukan skrining fitokimia terhadap ekstrak kombinasi kulit batang kelor dan rimpang temulawak hasil maserasi menggunakan pelarut methanol. Perbandingan kombinasi ekstrak kombinasi adalah 1:1 dan perbandingan ekstrak dan pelarut adalah 1:6. Hasil uji menunjukkan bahwa ekstrak kombinasi kulit batang kelor dan rimpang temulawak positif mengandung kelompok senyawa alkaloid dan triterpenoid/steroid dan negated terhadao uji flavonoid, tanin dan saponin. Oleh karena itu pengujian lebih lanjut untuj menganalisis senyawa yang terkandung dan biaktivitas ekstrak kombinasi kulit batang kelor dan rimpang temulawak perlu dilakukan.
Penggunaan Ekstrak Umbi Ubi Jalar Ungu (Ipomoea batatas L.) Sebagai Indikator Asam-Basa Alami Bria, Hendriana Rosina; Leba, Maria Aloisia Uron; Kopon, Aloisius Masan
Jurnal Beta Kimia Vol 1 No 2 (2021): Volume 1, Nomor 2: November 2021
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jbk.v1i2.5579

Abstract

Umbi ubi jalar ungu merupakan salah satu sumber pigmen ungu. Kandungan senyawa utama dalam umbi ubi jalar ungu adalah antosianin. Antosianin merupakan senyawa yang dapat menunjukan perubahan warna berdasarkan pH lingkungannya. Sampel dari penelitian ini adalah umbi ubi jalar ungu yang berasal dari pulau Timor - Kupang. Ada dua variasi perlakuan sampel yang digunakan yaitu sampel basa (tanpa pengeringan) dan sampel kering (pengeringan dengan oven). Penelitian ini bertujuan untuk mengkaji 1). efektivitas ekstrak sampel basa (ESB) pada larutan uji pH 1-14, 2). efektivitas ekstrak sampel kering (ESK) pada larutan uji pH 1-14 3). efektivitas ESB dan ESK dalam mengidentifikasi sampel. Hasil penelitian menunjukan bahwa 1). ESB pada pH 1-2 berwarna merah pekat, pH 3-6 berwarna merah pudar, pH 7 berwarna ungu pudar, pH 8-11 berwarna hijau, pH 12-14 berwarna kuning. 2). ESK pada pH 1 berwarna merah pekat, pH 2-7 berwarna merah pudar, pH 8-11 berwarna hijau, pH 12-14 berwarna kuning, 3). ESB dan ESK memberikan perubahan warna yang jelas dalam mengidentifikasi sifat asam dan basa dari berbagai sampel.
Adsorption of Methylene Blue using the Biosorbent of Coconut Fiber Activated by Nitric Acid Baunsele, Anselmus Boy; Kopon, Aloisius Masan; Boelan, Erly Grizca; Leba, Maria A. U.; Komisia, Faderina; Tukan, Maria B.; Taek, Maximus M.; Tukan, Gerardus D.; Missa, Hildegardis; Siswanta, Dwi; Naat, Johnson N.; Rahayu, Rahayu
Molekul Vol 19 No 1 (2024)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2024.19.1.9443

Abstract

The textile industry in the world keeps increasing, but it harms environmental pollution caused by textile dye waste. Synthetic dyes contain carcinogenic and mutagenic ingredients that can demage the environment and aquatic biota. The alternative to handling dye pollution with a low-cost method is adsorption using nitric acid-activated coconut fiber. Coconut fiber was an abundant agricultural waste and economical, and it had an active site that contained many compounds such as cellulose, lignin, pyroligneous acid, and tannin molecules. This study used the UV-Vis Spectrophotometer analysis method to determine the effect of pH, contact time, and coconut fiber on the adsorption capacity of methylene blue. The result showed that the optimal conditions for adsorption were a pH of 5, a contact time of 75 minutes, and a percentage adsorption of the variation of contact time of 99.628%. The adsorption study was according to a pseudo-second-order reaction with a constant reaction rate of 0.050 g mg-1 minute-1. The maximum adsorption capacity was 2 mg g-1, with the percentage of methylene blue adsorbed at 99.84%. Adsorption occurs chemically with an energy of 35.4 kJ mol-1, so it can be determined that it occurs with a monolayer mechanism.
Identification of Phytochemical Extract of a Combination of Young Coconut Water, Ginger and Turmeric Hasti, Florentina Saji; Kopon, Aloisius Masan; Baunsele, Anselmus Boy; Tukan, Maria Benedikta; Leba, Maria Aloisia Uron; Boelan, Erly Grizca; Komisia, Faderina
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-flo

Abstract

Turmeric is a tropical plant that is widely found on the Asian continent which is extensively used as a food coloring agent and fragrance. Ginger is a spice plant that it often found in South Asia which is widely has spread throughout the world. Coconut is an annual plant, has a hard stem and is generally not branched (monopodial), has fibrous roots, and contain water that is clear and tastes sweet, young coconut water has benefits such as antibacterial, beauty treatment, as an isotonic agent, and carry out the urination. This research was conducted to obtain information about the physicochemical properties and secondary metabolites contents of the coconut water, ginger and turmeric combination extract. The research method was carried out by mixing the mashed turmeric and ginger with the young coconut water and then macerated. The resulting extract was then tested for physicochemical properties (solubility) and identified groups of secondary metabolites (flavonoids, tannins, saponins, and steroids/triterpenoids. The extract was soluble in 70% ethanol. In addition, the combination of young coconut water, ginger, and turmeric extract contain a group of secondary metabolites among others flavonoids, tannins, saponins, and triterpenoids.
Phytochemical Screening and TLC Profiling of Combination Extracts of Avocado (Persea americana Mill.) and Papaya (Carica papaya) Leaves from Timor Island Kafelau, Marianus; Kopon, Aloisius Masan; Baunsele, Anselmus Boy; Tukan, Maria Benediktas; Leba, Maria Uron; Komisia, Faderina; Boelan, Erly Grizca
Indonesian Journal of Chemical Research Vol 10 No 1 (2022): Edition for May 2022
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2022.10-boe

Abstract

Traditionally in the village of Alor, East Nusa Tenggara Province, a combination of avocado and papaya leaves is often used to treat malaria. To be able to be developed as an ingredient in traditional medicine, it is necessary to conduct preliminary research to determine the content of secondary metabolites contained in the combination of avocado and papaya leaves. This study aims to determine the secondary metabolites contained in avocado and papaya leaves through phytochemical screening and Thin Layer Chromatography (TLC) analysis. Extraction was carried out using methanol solvent by maceration, and the extract yield was 91.4%. Testing the content of secondary metabolites in avocado and papaya leaf extracts was carried out by phytochemical screening. Furthermore, the TLC test was carried out to confirm the presence of a positive group of compounds on phytochemical screening, and to determine the chromatographic profile of the extract. After being tested by phytochemical and TLC analysis, the extract contains several metabolites, including flavonoids, alkaloids, tannins, saponins, and steroids. The TLC system used in this study can separate the phytochemical content and give positive results that confirm the results of the phytochemical screening.
Kinetic Study of Blue Methylene Adsorption Using Coconut Husk Base Activated Baunsele, Anselmus Boy; Boelan, Erly Grizca; Kopon, Aloisius Masan; Rahayu, Rahayu; Siswanta, Dwi
Indonesian Journal of Chemical Research Vol 10 No 2 (2022): Edition for September 2022
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598//ijcr.2022.10-ans

Abstract

Blue methylene is a cationic dye. It is usually as in various industries. The waste of blue methylene can reduce the environmental balance, especially for aquatic biota, by inhibiting the penetration of sunlight into the water. The experiment used the most natural ingredients and methods to minimize the existence of the dye. In this research, coconut husk was activated with NaOH solution and then used for blue methylene adsorption. The coconut husk started aims to reduce the pollution of the adsorbent to increase the adsorption capacity. The study result showed the optimum adsorption of blue methylene at pH 7 for 75 minutes of adsorption with the capacity adsorption of 1.41 mg g-1. The development of the kinetic study described the adsorption process according to a second-order pseudo reaction kinetic model with the constant adsorption rate of 2.54 x 10-4 g mg-1 minute-1.
Pigmen Umbi Ubi Jalar Ungu dan Rimpang Kunyit: Indikator Ramah Lingkungan dan Murah untuk Eksperimen Titrasi Asam-Basa Leba, Maria Aloisia Uron; Mau, Sisilia Daeng Bakka; Boelan, Erly Grizca; Taek, Maximus M.; Ruas, Juvencio de Castro; Lawung, Yustina D.; Ruas, Adilson de Castro; Kopon, Aloisius Masan; Ruas, Noemia A.
Journal of The Indonesian Society of Integrated Chemistry Vol. 15 No. 2 (2023): Journal of The Indonesian Society of Integrated Chemistry
Publisher : Pendidikan Kimia FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jisic.v15i2.28648

Abstract

[Pigments of Purple Sweet Potato and Turmeric Rhizome: Eco-Friendly and Cheap Indicators for Acid-Base Titration Experiment] Tujuan dari penelitian ini adalah mengkaji karakter pigmen umbi ubi jalar ungu (PUUJU) dan pigmen rimpang kunyit (PRK) pada larutan uji dan penggunaannya sebagai indikator titrasi asam basa dibandingkan dengan indikator fenolftalein. PRK diekstraksi dengan pelarut etanol sedangkan PUUJU diekstraksi dengan pelarut etanol dalam suasana asam. PUUJU dan PRK diuji karakter perubahan warnanya dan digunakan sebagai indikator titrasi HCl-NaOH dan CH3COOH-NaOH. Hasil penelitian menunjukkan PUUJU berwarna merah pada pH 1, pink pada pH 2-6, ungu pada pH 7, biru pada pH 8-9, hijau pada pH 10-11 dan kuning pada pH 12-14. PRK menunjukkan warna kuning pada pH 1-7, merah bata pudar pada pH 8 dan semakin pekat seiring naiknya nilai pH larutan. Kedua pigmen ini mampu menunjukkan perubahan warna yang jelas pada titik akhir titrasi layaknya indikator fenolftalien. Diperoleh konsentrasi HCl pada titrasi menggunakan indikator PP, PUUJU dan PRK berturut-turut adalah 0,1031 M, 0,1045 M dan 0,1025 M sedangkan konsentrasi CH3COOH berturut-turut adalah 0,0876 M, 0,0869 M dan 0,0853 M. Berdasarkan data-data ini, PUUJU dan PRK dapat digunakan sebagai indikator titrasi HCl-NaOH dan CH3COOOH-NaOH dalam praktikum kimia di kelas. Kata kunci/keyword: Volumetri, pigmen alami, ubi jalar ungu, kunyit, volumetry, natural pigment, purple sweet potato, turmeric rhizome.
Co-Authors Anselmus Boy Baunsele Bria, Hendriana Rosina Dwi Siswanta Erly Grizca Boelan Faderina Komisia Goa, Rio Fernando Hasti, Florentina Saji Hildegardis Missa Kafelau, Marianus Leba, Maria A. U. Leba, Maria Uron Maria Aloisia Uron Leba Maria Benedikta Tukan Naat, Johnson N. Rahayu Rahayu Ruas, Adilson de Castro Ruas, Juvencio de Castro Ruas, Noemia A. Sisilia Daeng Bakka Mau Taek, Maximus M. Tukan, Gerardus D. Tukan, Maria Benediktas Yustina Dwisofiani Lawung