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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 Agrosains: Jurnal Penelitian Agronomi 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 Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Risna Erni Yati Adu
Universitas Timor
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Education of making natural hand sanitizers to the community of Haulasi Village, North Central Timor Regency Adu, Risna Erni Yati; Tnunay, Ite Morina Yostianti; Benu, Didi Prasetyo; Makin, Florian M. P. R.; Hanas, Dicky; Kamaluddin
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 5 No. 2 (2020): ABDIMAS TALENTA : Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1050.777 KB) | DOI: 10.32734/abdimastalenta.v5i2.4327

Abstract

The availability of hand sanitizers, which is one of the Covid-19 prevention media, is becoming scarce and expensive due to their increasing use, making them difficult to reach by the public. Therefore we need another source of active ingredients that more easily obtained, available in abundant quantities and more economically to be used as a substtitute for hand sanitizer raw materials by the public. Potential alternantive material to be used as raw material for hand sanitizer is betel leaves, however, public knowledge about the benefits and methods of processing betel leaves into hand sanitizer is very limited. Therefore, education about the use of betel leaves into natural hand sanitizer products to rural communitties needs to be done to increase people’s insight about making natural hand sanitizer and increase public awareness in maintaining hygiene by providing and using similar products.
Eco-Dyeing of Timor Woven Fabrics using Pterocarpus Indicus Bark Tannin as a Natural Mordant Adu, Risna Erni Yati; Fay, Angela Desy Putry; Tea, Marselina Theresia Djue
Hydrogen: Jurnal Kependidikan Kimia Vol. 12 No. 4 (2024): August 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i4.11640

Abstract

Pterocarpus indicus is a tropical wood type containing tannin compounds which potentially to be used as biomordants in woven fabrics dyeing. This research is the first work to determine the color cha racteristics of Timorese woven fabric after using tannin from Pterocarpus indicus bark as a biomordant. This research aims to determine the tannin content and colour properties of Timor woven fabric after using tannin as a a natural mordant. Pterocarpus indicus bark samples were prepared and extracted via hot extraction. The tannins in Pterocarpus indicus stem bark were qualitatively and quantitatively analyzed using FT-IR and UV-Vis Spectrophotometer respectively, then applied as a color binder for woven threads. The color properties of woven fabrics with tannin were compared to woven fabrics treated with Al2(SO4)3 mordant at a concentration of 15%. Color fastness to washing are tested using the Staining Scale Standard. Pterocarpus indicus bark tannin is a brown powder. Qualitative and quantitative tests show that Pterocarpus indicus bark contains tannins with a total concentration of 0.0436%. FTIR spectra exhibited functional groups absorption by the aromatic C-H, O-H, C=C, C-C, C-O-C, and C-O. The use of 15% tannin and curcumin dye produces a yellow-brown woven fabric with a fairly good color fastness value to washing. Pterocarpus indicus bark contains tannin which has potential as a biomordant for natural Timorese weaving dyeing.
Pelatihan Daur Ulang Sampah Plastik Menjadi Ecopaving Bagi UKK Pemulung Desa Tublopo Kabupaten Timor Tengah Utara Adu, Risna Erni Yati; Gelyaman, Gebhardus Djugian; Batu, Matius Stefanus; Benu, Didi Prasetyo
Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Vol. 8 No. 1 (2024): Vol 8, No 1 (2024)
Publisher : Yogyakarta State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpmmp.v8i1.66992

Abstract

Pengelolaan sampah plastik di kawasan Hutan Tatub Desa Tublopo Kabupaten Timor Tengah Utara (TTU) masih dilakukan secara terbatas oleh Kelompok UKK Pemulung Desa Tublopo. Hal ini menyebabkan terjadinya penumpukan sampah plastic yang berakibat pada penyempitan lahan di Pos UKK dan juga di area pembuangan sampah sehingga sebagian sampah plastic di area pembuangan harus dibakar. Kondisi ini menjadi dasar dilakukannya kegiatan pengabdian sebagai salah satu upaya peningkatan pengetahuan dan keterampilan kelompok UKK Pemulung melalui kegiatan sosialisasi dan pelatihan outclass tentang manajemen akhir sampah plastic dan pelatihan pengolahan sampah plastic menjadi produk paving block. Tahapan kegiatan yang dilakukan untuk menyelesaikan persoalan mitra yaitu kegiatan persiapan, sosialisasi dan pelatihan serta evaluasi. Dari kegiatan yang telah dilakukan dapat disimpulkan bahwa pengetahuan anggota Kelompok UKK Pemulung Desa Tublopo tentang manajemen akhir sampah plastic dimulai dari pewadahan, pengumpulan, dan pemrosesan akhir telah mengalami peningkatan. Anggota UKK Pemulung sampah juga terampil dalam memilah dan mengolah sampah plastik menjadi produk paving block.
PENINGKATAN KETAHANAN PANGAN DI LAHAN KERING PADA KELOMPOK TANI PEREMPUAN SION MELALUI PENERAPAN PEKARANGAN LESTARI Sipayung, Boanerges Putra; Tobing, Wilda Lumban; Bria, Deseriana; Ndua, Natalia Desy Djata; Kia, Kristoforus Wilson; Neonbeni, Eduardus Yosef; Tefa, Azor Yulianus; Kadju, Fransiskus Yulius Dhewa; Pardosi, Lukas; Adu, Risna Erni Yati
Abdimas Galuh Vol 5, No 2 (2023): September 2023
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/ag.v5i2.11117

Abstract

Kelompok tani Perempuan Sion aktif dalam kegiatan bercocok tanam di lahan kering. Namun terdapat kesulitan dalam mengelola lahannya. Tujuan pengabdian ini adalah meningkatkan ketahanan pangan kelompok tani Perempuan Sion melalui penerapan pekarangan lestari. Pelaksanaan dilakukan melalui sistem learning by doing dengan sosialisasi dan demonstrasi yang melibatkan kelompok tani Perempuan Sion dan mahasiswa sebagai implementasi MBKM. Kegiatan berlangsung dengan durasi 3 (tiga) bulan mulai dari Juli – September 2022. Tahapan kegiatan dimulai dari persiapan lahan, pembuatan pupuk bokashi berbahan dasar limbah dan kotoran ayam, persemaian benih pakcoy, pemupukan, penanaman, perawatan tanaman, dan pemanenan. Berdasarkan hasil kegiatan pengabdian, kelompok tani Perempuan Sion mampu mengubah limbah menjadi bokashi, mampu mengelola lahan kering sebagai lahan pertanian yang lebih efektif dan efisien baik secara waktu dan tenaga, serta mampu meningkatkan ketahanan pangan.
Exploring the Synergistic Effect of Curcumin on Gelatin Films for Real-Time Pork Freshness Assessment Adu, Risna Erni Yati; Gelyaman, Gebhardus Djugian; Kia, Kristoforus Wilson; Oki, Emirensiana; Silab, Maria Desi; Knaofmone, Angelina
Chimica et Natura Acta Vol 13, No 3 (2025)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v13.n3.57995

Abstract

A smart film based on hydromethanol-curcumin has been developed as a freshness detector for local packaged pork. It was fabricated using solution casting method by varying the curcumin content to determine its effect on the chemical, physical, mechanical and functional characteristics of the film. Film characteristics were determined using colorimeter, TGA, FTIR, SEM and bioactivity assay. Film response was analyzed in different pH buffer solutions, different acid base media and pork samples during the storage period. Film characteristics such as antioxidant, antibacterial activity and surface color was improved by increasing curcumin concentration. On the other hand, mechanical dan physicochemical characteristics such as tensile strength, water content, swelling index and water solubility decreased along with increasing curcumin concentration. Curcumin concentration have no significant effect on the thermal stability and color brightness of the film. SEM images show that increasing curcumin concentration results in aggregation of the gelatin biopolymer matrix. Gelatin-curcumin film was sensitive to pH changes either in gas or liquid media. The properties of the proposed film have high potential to be used as a freshness detector for local packaged pork.
Introduction and Use of Aloe Vera-Based Edible Coating to Improve the Quality of Cucumber Fruit in the Oemanas Farmer Group Nian Village: Pengenalan dan Penggunaan Edible Coating Berbasis Aloe Vera untuk Peningkatan Mutu Buah Timun di Kelompok Tani Oemanas Desa Nian Risna Erni Yati Adu; Marselina Theresia Djue Tea; Gebhardus Djugian Gelyaman
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol. 9 No. 1 (2025): Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : DPD Jatim Perkumpulan Dosen Indonesia Semesta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Cucumber is one of the main commodities produced by the Oemanas Farmers Group in Nian Village. So far, the number of cucumbers produced is quite high during harvest time, but often experiences physical damage during transportation and marketing. Due to the limited knowledge and skills of the farmer group members, so far there has been no post-harvest processing and preservation technique. As an effort to reduce this problem, it is necessary to carry out activities to introduce and apply edible coating based on easily accessible materials. Edible coating can control post-harvest damage to cucumbers. This community service activity aims to control damage to cucumbers in partner groups through preliminary survey activities to obtain information related to partner conditions, socialization in the form of lectures followed by interactive discussions between participants and implementers, training in preparation and application of coating suspensions carried out through demonstration activities then continued with independent practice activities by each member of the farmer group. The final activity is an evaluation to measure the achievement of the goals and targets of the activity. The evaluation results showed an increase in partner knowledge about edible coating by 65% ​​of the total participants. In addition, more than 70% of partner members have the skills to carry out the preparation of edible coating suspensions and apply them to the surface of cucumbers through dipping techniques.
Curcumin-Cellulose Film for Visual Detection of Fish Spoilage Risna Erni Yati Adu; Gebhardus Djugian Gelyaman
Jurnal Sains dan Terapan Kimia Vol 18, No 2 (2024)
Publisher : Jurnal Ilmiah Berkala Sains dan Terapan Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jstk.v18i2.15550

Abstract

Fish spoilage can be monitored visually through a responsive film to freshness and pH changes. This study aims to produce a film that is responsive to pH changes in the fish environment from curcumin, a safer natural dye. The chemical, physical, and functional characteristics as well as the film response to pH change and fish freshness during storage were studied here. Cellulose-curcumin films were fabricated by impregnation of curcumin into cellulose films. The chemical characteristics such as functional groups and surface morphology were determined by FT-IR and SEM respectively. FT-IR presents an interaction between curcumin and cellulosic polymer. The impregnation of curcumin into the cellulose film caused the segregation on the film surface observed on the SEM photos and decreased the swelling index. Cellulose-curcumin films are highly responsive to both acidic and alkaline pH. At an acidic pH, the film is yellow while at an alkaline pH the film changes to a red-brown color. The film also presented a highly color change from orange to reddish brown with increasing of fish storage days. A higher antioxidant activity of 5.54% was presented by curcumin film than the cellulose pure film. Therefore, cellulose-curcumin film can be used to detect fish spoilage through direct visual inspection.
Budidaya Sistem Vertikultur dengan Fertigasi: Kajian Pertumbuhan dan Hasil Tanaman Selada Melalui Modifikasi Media Tanam dan Boron Tobing, Wilda Lumban; Maunino, Gloriana Getreda; Adu, Risna Erni Yati; Tefa, Azor Yulianus; Ndua, Natalia Desy Djata
Agrosains : Jurnal Penelitian Agronomi Vol 27, No 2 (2025): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v27i2.107345

Abstract

Dry land soils generally have poor physical quality, requiring intensive management to be used effectively as planting media. Verticulture is applied to improve the growing medium by incorporating biochar and compost. The development of verticulture integrated with a fertigation system allows uniform distribution of water and nutrients along the vertical pipes. This study aimed to examine the effects of planting medium composition and boron concentration on the growth and yield of lettuce (Lactuca sativa L.) under a verticulture fertigation system. The experiment employed a split-plot design. The main plot consisted of different planting medium compositions: soil (control), 50% soil + 50% compost–biochar mixture, 75% soil + 25% compost–biochar mixture, and 25% soil + 75% compost–biochar mixture. The subplot was the boron concentration, consisting of 0 g/L (control), 1 g/L, and 1.5 g/L. The results showed that the interaction between planting medium composition and boron concentration significantly affected plant height and number of leaves at 21–28 days after planting (DAP), as well as root volume. The planting medium had a significant effect on all observed parameters, while boron concentration significantly affected plant height at 35 DAP. The combination of compost and biochar in balanced proportions, together with optimal boron concentration, enhanced lettuce growth performance in the vertical wick fertigation system.
Pemanfaatan Ekstrak Antosianin dari Limbah Kulit Bawang Merah (Allium cepa) sebagai Zat Pemeka (Sensitizer) pada Dye Sensitized Solar Cell (DSSC) Adu, Risna Erni Yati; Gelyaman, Gebhardus; Kabosu, Marlince
ALCHEMY Jurnal Penelitian Kimia Vol 18, No 1 (2022): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.18.1.56104.103-111

Abstract

Fabrikasi DSSC dengan menggunakan sensitizer zat warna sintetik yang mahal dan susah diperoleh dapat diatasi dengan memanfaatkan zat warna alami dari limbah biomassa kulit bawang merah. Penelitian tentang ekstraksi antosianin dari limbah kulit bawang merah (Allium cepa) dan pemanfaatannya sebagai zat pemeka (sensitizer) pada Dye Sensitized Solar Cell (DSSC) telah dilakukan dengan tujuan untuk mengetahui karakteristik warna ekstrak antosianin dalam limbah kulit bawang merah dan potensinya sebagai zat pemeka dalam DSSC. Antosianin dalam limbah kulit bawang merah diekstraksi dengan menggunakan pelarut etanol 95% dengan penambahan asam (ET) dan etanol tanpa penambahan asam (ETT). Ekstrak kulit bawang merah dikarakterisasi serapan warna dan gugus fungsinya dengan Spektrofotometer UV-Vis pada panjang gelombang 200 nm – 800 nm dan Fourier Transform Infrared (FTIR) pada bilangan gelombang 4000 cm-1 – 500 cm-1. Selanjutnya DSSC difabrikasi dan efisiensi DSSC ditentukan melalui perhitungan tegangan dan kuat arus yang terukur oleh multimeter. Hasil karakterisasi warna menunjukkan bahwa ekstrak kulit bawang merah baik dengan pelarut etanol terasamkan dan tidak terasamkan memiliki serapan maksimum pada panjang gelombang UV dengan serapan utama pada panjang gelombang 221, 251, 291 dan 366 nm. Spektrum FTIR ekstrak kulit bawang menunjukkan serapan khas gugus fungsi pada molekul antosianin pada rentang bilangan gelombang 3418 cm-1– 3375 cm-1 untuk gugus –OH, 2842 cm-1 – 2959 cm-1 untuk C–H alifatik, 1635 cm-1 – 1668 dan 714 cm-1 masing-masing untuk C=C dan C–H aromatic, 1040 cm-1– 1091 cm-1 untuk C–O–C dan 1198 cm-1– 1122 cm-1 untuk C–O alkohol. Hasil pengujian efisiensi sel menunjukkan bahwa sel DSSC yang difabrikasi menggunakan ekstrak etanol TT memiliki nilai efisiensi yang lebih tinggi yaitu sebesar 0,0491%.The Application of Anthocyanins Extracts from Red Onion Peel  Waste (Allium cepa) as a Sensitizer in Dye-Sensitized Solar Cell (DSSC). DSSC fabrication using synthetic dye sensitizers which are expensive and difficult to obtain can be overcome by utilizing natural dyes from onion peel. Anthocyanin extraction from red onion peel (Allium cepa) and its use as a sensitizer in dye-sensitized solar cells (DSSC) has been investigated. The purpose of this study was to determine the color characteristics of anthocyanin extract in onion peel waste and its potential as a sensitizer. Anthocyanin in onion peel waste was extracted using 95% ethanol as a solvent with acid (ET) and ethanol without acid (ETT). The color absorption and functional groups of onion peel extract were characterized using UV-Vis spectrophotometer at 200 nm – 800 nm wavelength and Fourier Transform Infrared (FTIR) at wavenumber of 4000 cm-1 – 500 cm-1. Furthermore, DSSC was fabricated, and an efficiency value was achieved by calculating the voltage and current measured by the multimeter. Onion peel extract has maximum absorption in acidified and unacidified ethanol at UV wavelengths, with the main absorption at 221, 251, 291, and 366 nm. The FTIR spectrum of onion peel extract shows typical absorption of functional groups in anthocyanin at wavenumbers of 3418 cm-1 – 3375 cm-1 for the –OH group, 2842 cm-1– 2959 cm-1 for aliphatic CH, 1635 cm-1–1668 cm-1, and 714 cm-1 for C=C and C–H aromatics, respectively. The absorption band at 1040 cm-1– 1091 cm-1 and 1198 cm-1 – 1122 cm-1 correspond to C–O–C and C–O alcohol. DSSC cells fabricated using unacidified ethanol extract have the highest efficiency of 0.0491%.
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 Kabosu, Marlince 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 Mata, Meri Helsiana Matius Stefanus Batu Maunino, Gloriana Getreda 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 Sefrinus Maria Dolfi Kolo 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