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All Journal CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Jurnal Kimia (Journal of Chemistry) JURNAL KIMIA SAINS DAN APLIKASI Jurnal Riset Kimia Al-Kimia Chimica et Natura Acta ALCHEMY Jurnal Penelitian Kimia Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Akta Kimia Indonesia Jurnal Saintek Lahan Kering JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat BERNAS: Jurnal Pengabdian Kepada Masyarakat Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Jurnal Pengabdian kepada Masyarakat Nusantara Hydrogen: Jurnal Kependidikan Kimia Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Jurnal Akademika Kimia Jurnal Inovasi Pengabdian dan Pemberdayaan Masyarakat Journal of Chemical Science and Application Jurnal Akademika Kimia
Risna Erni Yati Adu
Universitas Timor
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Neuroscience Nursing Public Health Social Sciences Veterinary Other

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PELATIHAN PEMBUATAN TEMPE KACANG TURIS DAN KACANG MERAH BAGI MASYARAKAT KELOMPOK TANI FATUKNUTU KELURAHAN SASI, KABUPATEN TIMOR TENGAH UTARA Risna Erni Yati Adu; Dicky Frengky Hanas; Yuni Sine; Emilia Juliyanti Bria; Elisabeth Korbafo; Bernadina Metboki; Regina Seran; Maria Magdalena Kollo
Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Vol 4, No 3 (2022)
Publisher : Fakultas Teknik Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/pasopati.2022.14375

Abstract

Kegiatan pelatihan pembuatan tempe dari kacang merah dan kacang turis bermitra dengan kelompok tani Fatuknutu, Kelurahan Sasi, Kota Kefamenanu. Kegiatan ini dilatarbelakangi oleh ketersediaan bahan baku yang melimpah di lokasi setempat tetapi masyarakat belum dibekali oleh pengetahuan dan keterampilan untuk mengolah bahan tersebut. Sehingga kegiatan ini dimaksudkan untuk mengedukasi sekaligus melatih masyarakat dalam melakukan inovasi terhadap bahan pangan yang melimpah sekaligus untuk meningkatkan nila jualnya. Terdapat 3 tahapan dalam melaksanakan kegiatan ini yaitu menjelaskan dan menginstruksikan alat dan bahan yang akan digunakan dalam kegiatan, mendemonstrasikan pembuatan tempe dari kacang turis dan kacang merah sekaligus mendampingi peserta dalam praktik mandiri serta memonitoring dan mengevaluasi hasil pelatihan. Hasil utama yang diperoleh berupa produk tempe kacang turis dan tempe kacang merah. Selain produk tempe, anggota Kelompok Tani Fatuknutu menjadi terampil dalam membuat tempe secara mandiri untuk memenuhi kebutuhan gizi harian dari bahan baku yang mudah dijangkau.Kata kunci : tempe, kacang turis, kacang merah, fatuknutu, sasi
Pelatihan Pembuatan Kecambah Kacang Hijau (Tauge) Dengan Media Pasir Sungai Untuk Masyarakat Dusun Banopo, Kabupaten Timor Tengah Utara Emilia Juliyanti Bria; Yuni Sine; Risna Erni Yati Adu; Hermina Manlea; Dicky Frengky Hanas; Lukas Pardosi; Elisabeth Korbafo
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol 6 No 3 (2022): Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : Dewan Pimpinan Daerah (DPD) Perkumpulan Dosen Indonesia Semesta (DIS) Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36339/je.v6i3.606

Abstract

The people of Dusun Banopo mostly work as farmers who produce a variety of agricultural products. One of the products produced is mung beans. The yield of bean sprouts is very good and plentiful, however the utilization of this product is still very low, especially in supporting family health and increasing family income. Most of the produce is sold immediately and a quarter of the harvested are usually left at home to be cooked with corn. Mung bean seeds can be germinated into bean sprouts which have a higher nutritional content and can be used as marketed products. This service activity was well received by the community, especially the women from the Women Farmers Group. This group gains knowledge and skills in making bean sprouts with media that can be taken from the surrounding environment. Besides being able to be used as a nutritious vegetable in improving family health, it can also marketed to increase family income.
Ekstraksi Tanin dari Limbah Kulit Biji Asam dan Penggunaannya Sebagai Biomordan pada Pewarnaan Tenun Timor Secara Alami Risna Erni Yati Adu; Marselina Theresia Djue Tea; Yunita Bouk
Jurnal Riset Kimia Vol. 13 No. 2 (2022): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v13i2.509

Abstract

Tannins from tamarind seed husk were extracted and applied as a biomordant for natural dyeing process of Timor woven fabrics. Tannins were extracted using hot distilled water, qualitatively and quantitatively analyzed and applied as a color binder to the woven fabrics. The color characteristics of woven fabrics with tannins were compared to the woven fabrics that mordanted with Al2(SO4)3 and FeSO4 at the concentration of 15%. Tamarind seed husk tannins are in the form of a brownish red powder. Qualitative and quantitative tests showed that tamarind seed coat contained condensed tannins with a total concentration of 70.08 ± 0.14%. Tannins identification by FT-IR spectroscopy showed a strong band absorption at 3369 cm-1 for O-H group and a weak absorption at 1721 cm-1 due to the C=O stretch. A strong absorption at 1611-1608 cm-1 was observed for C=C group in the aromatic ring and was strengthened with a strong absorption at 1520 cm-1, C-O-C group which is specific for condensed tannins was observed at 1285 cm-1. Application of 15% tannin as a biomordant without natural dye on Timor woven fabric produced a brownish red color, while the use of 15% tannin and turmeric dye showed a brownish yellow color. Tannin exhibited a better color fastness than metalic mordants in natural dyeing of Timor woven fabrics.
Synthesis of Biodiesel from Feun Kase (Thevetia peruviana) Seed Oil Using NaOH Catalyst Jefry Presson; Yohana Ivana Kedang; Maria Lilita Guterres; Risna Erni Yati Adu; Elisabeth Korbafo; Heri Suseno
Jurnal Kimia Sains dan Aplikasi Vol 25, No 8 (2022): Volume 25 Issue 8 Year 2022
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.25.8.270-279

Abstract

The demand for biodiesel in the renewable energy sector continues to grow yearly. However, the majority of biodiesel sources currently still compete with the food sector. Feun Kase seeds contain high oil and do not compete with food, so they have prospects as a new source of biodiesel. This study aimed to find the optimal conditions for synthesizing biodiesel from Feun Kase seed oil, carried out through transesterification with four reaction variables: catalyst variation, time, temperature, and the molar ratio of oil/methanol. This study was equipped with parameter test data according to SNI (Indonesian National Standard) 7182:2015, also equipped with characterization using FTIR (Fourier Transform Infrared) and GCMS (Gas Chromatography Mass Spectroscopy). The highest biodiesel yield of 84.09% was obtained using optimum conditions of 1% NaOH catalyst, oil/methanol molar ratio of 1:6 at 70°C for 90 minutes of reaction. The test results of biodiesel parameters are density (851 kg/m3), smoke point (6°C), kinematic viscosity (5.35 cSt); acid number (1.08 mg KOH/gr), saponification number (159.32 mg KOH/gr), iodine number (78.62 g I2/100 g sample), flash point (165°C), and cetane number (62.86). FTIR analysis proved the presence of methyl esters with typical absorption at 1743 cm-1, 1195.87 cm-1, and 1436.97 cm-1. GCMS characterization showed that Feun Kase biodiesel was dominated by methyl oleate (53.45%), methyl palmitate (27.05%), methyl stearate (10.96%), and methyl linoleate (6.29%).
Training on Making Solid Soap from Used Cooking Oil in Amol Village, East Miomafo District Risna Erni Yati Adu; Gebhardus Djugian Gelyaman; Jefry Presson
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol 7 No 1 (2023): Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : Dewan Pimpinan Daerah (DPD) Perkumpulan Dosen Indonesia Semesta (DIS) Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36339/je.v7i1.673

Abstract

Waste cooking oil is heated at a high temperature of 160-250°C for a long time, causing oxidation, hydrolysis, and polymerization to produce ketones, aldehydes, and polymers that are detrimental to human health. Therefore, it is not recommended for reuse. Waste cooking oil in Amol Village was abundant and accommodated, often used repeatedly and then dumped into the environment without any further treatment. The initial survey showed that most of Amol Village's people do not yet know about the dangers of reusing used cooking oil or the dangers to the environment. On the other hand, high free fatty acids have the potential to be converted into soap through the saponification process with a base. Thus, the socialization of the dangers of waste cooking oil for human health and the environment and training on making solid soap from used cooking oil was carried out in Amol Village to assist the community in dealing with used cooking oil waste and save spending on soap purchases. Problem-solving was carried out through several stages of activities, namely observation, preparatory activities, socialization; manufacture of solid soap product from used cooking oil. Those stages were carried out through demonstrations and practices independently by participants, followed by monitoring, evaluation, and reporting. The knowledge and skills of participants have been improved, regarding to handling the used cooking oil and its processing into solid soap.
Pelatihan Pembuatan Biodiesel Bagi Pemuda Di Desa Oeolo Provinsi NTT jefry Presson; Yakobus P.E.S Agu; Marselina T.D. Tea; Lukas Pardosi; Eduardus Yosef Neonbeni; Risna Erni Yati Adu; Maria Magdalena Kolo; Nugraha Kristiano Floresda Dethan
Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Vol 7, No 1 (2023): Vol 7, No 1 (2023)
Publisher : Yogyakarta State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpmmp.v7i1.57356

Abstract

Minyak Feun Kase merupakan bahan baku pembuatan biodiesel yang efektif karena tidak bersaing dengan sektor pangan. Walaupun tanaman Feun Kase banyak tersebar di Desa Oeolo, masyarakat setempat tidak mengetahui potensi dari tanaman ini. Oleh karena itu, kegiatan pelatihan pembuatan biodiesel ini penting dilakukan dengan tujuan meningkatkan pengetahuan masyarakat muda mengenai potensi Feun Kase sebagai biodiesel, dan meningkatkan minat terhadap disiplin ilmu berbasis teknologi. Dengan demikian, kerja keras Pemerintah Indonesia dan para peneliti dapat berjalan lancar karena didukung oleh masyarakat yang memiliki pengetahuan dan ketrampilan. Kegiatan ini dilakukan dalam 6 urutan dari persiapan material sampai survei akhir dengan metode yang bervariasi seperti ceramah, kuesioner, dan pendampingan. Peserta kegiatan ini adalah anak – anak muda Desa Oeolo dengan rentang umur 20 – 30 tahun. Melalui survei menggunakan kuesioner, terlihat bahwa terjadi peningkatan pengetahuan peserta dari nilai 25 (sebelum pelatihan) menjadi 83 (sesudah pelatihan). Dari hasil survei, dapat disimpulkan bahwa kegiatan ini berdampak pada peningkatan pengetahuan sebesar 233%.
Evaluasi Dan Modifikasi Metode Kurkumin Untuk Analisis Boron Secara Spektrofotometri Melalui Distilasi Ester Borat Risna Erni Yati Adu; Roto roto; Agus Kuncaka
Akta Kimia Indonesia Vol 8, No 1 (2023)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25493736.v8i1.16137

Abstract

Evaluasi dan modifikasi terhadap metode kurkumin telah dilakukan untuk menetapkan suatu metode analisis boron yang lebih akurat dan presisi untuk analisis boron secara spektrofotometri dalam sampel makanan. Evaluasi dilakukan terhadap sejumlah parameter yang mempengaruhi reaksi pembentukan kompleks asam borat dan kurkumin. Komponen-komponen yang dievaluasi meliputi panjang gelombang kompleks boron-kurkumin, kestabilan warna kompleks, rasio asam oksalat /kurkumin, jenis pelarut kurkumin, serta rasio volume etanol terhadap asam borat. Kondisi optimum dari hasil evaluasi yaiitu panjang gelombang boron-kurkumin 555 nm, waktu kestabilan kompleks 20 menit, rasio asam oksalat/kurkumin 15:1, jenis pelarut etil asetat serta rasio volume etanol 5:1 terhadap massa asam borat. Metode kurkumin telah divalidasi dan memenuhi kriteria akurat dan presisi dengan nilai persen perolehan kembali berkisar 96,09-104,92% dan nilai presisi intraday dan interday pada kisaran 0,44–1,50%, serta telah digunakan untuk menentukan konten boron dalam masing-masing sampel mie A, B, dan C secara berturut-turut adalah 0,74; 1,04 dan 1,08 mg kg-1. Metode analisis boron hasil modifikasi dapat digunakan untuk menentukan konten boron dalam sampel makanan lainnya.
Aktivitas Antibakteri dan Antioksidan Kain Tenun Timor Setelah Mordanting dengan Biomordan Tanin Kulit Biji Asam Eka Maria Sanit; Risna Erni Yati Adu; Maria Magdalena Kolo; Elisabeth Korbafo
Saintek Lahan Kering Vol 6 No 1 (2023): JSLK JUNI 2023
Publisher : Fakultas Pertanian, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/slk.v6i1.2137

Abstract

The use of natural dyes in the textile industry, especially in dyeing Timorese woven fabrics, is increasingly in demand, however, the resulting colors tend not to fade easily against washing, so mordant is needed as a binder for colors and fabric fibers. Dyes and mordant derived from natural materials, apart from functioning as coloring agent and color enhancer, also have functional activities such as antibacterial and antioxidant. This study was conducted to examine the antioxidant and antibacterial activity of Timorese weaving using curcumin and biomordan tannin dyes against the growth of Escherichia Coli and Staphylococcus Aureus bacteria. Prior to the antioxidant activity test using the DPPH method and the antibacterial test using the difussion method, a mordanting process was carried out with variations of mordant and coloring of woven fabrics. The results of the inhibition zone measurements showed that woven fabrics dyed without the application of biomordan tannins had strong antibacterial activity with an inhibition zone diameter of 2.0 mm. Meanwhile, the highest antioxidant activity was found in fabrics colored with curcumin and fixed with biomordan, which was 58.11 ppm.
Processing and Application of Tarum Leaves into Indigo Powder for Yarn Dyeing in Amol Village, North Central Timor District Risna Erni Yati Adu; Marselina Theresia Djue Tea; Gebhardus Djugian Gelyaman; Jefry Presson
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol 7 No 3 (2023): Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : Dewan Pimpinan Daerah (DPD) Perkumpulan Dosen Indonesia Semesta (DIS) Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36339/je.v7i3.778

Abstract

Processing and application of tarum leaves into indigo powder for woven threads dyeing has been carried out in the Weaver Women's Group of Amol Village, North Central Timor District. The less knowledge in producing indigo-colored woven fabrics and unavailable source of Indigo leaves during the dry season are the main reasons to conduct this program. This program was carried out in 4 main stages, namely socialization, demonstration of Indigo leaves processing into indigo powder, application in yarn dyeing and evaluation. This activity was able to increase the knowledge and skills of the Weaver group in processing Indigo leaves which are abundant in the rainy season into indigo powder which can be stored for use in the dry season. The resulted powder has been applied in the coloring of the woven yarn to produce an indigo blue color.
Sintesis Selulosa Asetat dari Sabut Buah Lontar (Borassus flabellifer Linn) dengan Variasi Volume Anhidrida Asetat Matius Stefanus Batu; Risna Erni Yati Adu; Lourenco Pereira Soares
Hydrogen: Jurnal Kependidikan Kimia Vol 11, No 5 (2023): October 2023
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v11i5.9049

Abstract

Kandungan selulosa yang terdapat dalam buah sabut lontar cukup melimpah. Selulosa asetat dapat dibuat dengan memanfaatkan selulosa dari sabut buah lontar. Tujuan dari penelitian ini, untuk menentukan karakteristik selulosa asetat yang terbuat dari sabut buah lontar (Borassus flabellifer Linn) dan volume anhidrida asetat optimum pada sintesis selulosa asetat. Tahapan pada penelitian ini antara lain preparasi sampel sabut buah lontar, isolasi selulosa dari sabut buah lontar (tahap delignifikasi dan bleaching) dan sintesis selulosa asetat dari sabut buah lontar (aktivasi, asetilasi, hidrolisis). Pengujian kadar air, kadar asetil, derajat subtitusi, kelarutan dan analisis gugus fungsi menggunakan Fourier Transfor Infra-Red (FTIR). Untuk memperoleh selulosa murni selulosa dari sabut buah lontar harus didelignifikasi dan dibleaching agar sisa lignin pada selulosa dapat menghilang. Selulosa diaktivasi menggunakan asam asetat glasial selama 60 menit, diasestilasi dengan variasi volume anhidrad asetat 24, 26, 28, 30 mL selama 1 jam pada suhu 500C dan dihidrolisis dengan akuades. Hasil kondisi optimum dengan asetat amhidrida adalah volume 30 mL dengan rendemen selulosa asetat 1,95%, kadar air 3,68%, kadar asetil 43,06% dan derajat subtitusi 2,79. Sintesis selulosa asetat dengan analisis FTIR menyatakan bahwa, sintesis yang dilakukan berhasil diindikasikan dengan puncak tajam terhadap gugus karbonil dan ester pada bilangan gelombang 1738-1751 cm-1 dan 1228-1247 cm-1. Selulosa asetat yang dihasilkan termasuk jenis selulosa diasetat yang dapat dimanfaatkan lebih lanjut sebagai bahan pembuatan membran, perekat film, filter masker dan pembuatan bioplastik.
Co-Authors A. Kuncaka A. Kuncaka Agus Kuncaka Agus Kuncaka Amsikan, Apriani Azor Yulianus Tefa Benu, Didi Benu, Didi Prasetyo Bernadina Metboki Bria, Deseriana Christanti, Cindy Claudia Edi, Eduardus Eduardus Yosef Neonbeni Eka Maria Sanit Emilia Juliyanti Bria Fay, Angela Desy Putry Florian Mayesti Prima Remba Makin Fransiskus Yulius Dhewa Kadju Gelyaman, Gebhardus Djugian Hanas, Dicky Hanas, Dicky Frengky Heri Suseno Hermina Manlea Jefry Presson Jefry Presson jefry Presson Jefry Presson Kamaluddin Kamaluddin Kamaluddin Kefi, Felisitas Kia, Kristoforus Wilson Knaofmone, Angelina Kolo, Maria Magdalena Korbafo, Elisabeth Loe, Delviana Erwita Lourenco Pereira Soares Lukas Pardosi Makin, Florian M. P. R. Manikin, Gerosa Risa Vianey Maria Lilita Guterres Maria Magdalena Kollo Marlince Kabosu Mata, Meri Helsiana Matius Stefanus Batu Mere, Janrigo Klaumegio N. M. Obenu Natalia Desy Djata Ndua Nensiana Kono Foni, Elfrida Neonbeni, Eduardus Yosef Nugraha K. F. Dethan Oki, Emirensiana R. Roto R. Roto Regina Seran Roto Roto Roto roto Silab, Maria Desi Sipayung, Boanerges Putra Talan, Veronika Sofia Jaquelin Tea, Marselina Theresia Djue tnunay, ite morina yostianti Tnunay, Ite Morina Yostianti Wiguna, Gede Arya Wilda Lumban Tobing Yakobus Pffeferius Edvend Saba Agu Yohana Ivana Kedang Yuni Sine Yuni Sine Yunita Bouk