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All Journal Alchemy : Journal of Chemistry Indonesian Green Technology Journal The Journal of Pure and Applied Chemistry Research EduChemia: Jurnal Kimia dan Pendidikan Indonesian Journal of Science and Education Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan INTENSIF: Jurnal Ilmiah Penelitian dan Penerapan Teknologi Sistem Informasi Jurnal Penelitian Pendidikan IPA (JPPIPA) PROCEEDING ICTESS (Internasional Conference on Technology, Education and Social Sciences) International Journal of Community Service Learning JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) Bubungan Tinggi: Jurnal Pengabdian Masyarakat Indonesian Journal for Social Responsibility Tri Dharma Mandiri: Diseminasi dan Hilirisasi Riset Kepada Masyarakat (Jurnal Pengabdian Kepada Masyarakat) Molekul: Jurnal Ilmiah Kimia
Layta Dinira
Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Metode Maserasi Berbantu Gelombang Ultrasonik untuk Ekstraksi Pigmen Merah-Ungu dari Enam Varietas Bayam Merah Dinira, Layta; Rosyida, Novita; Wulandari, Eka Ratri Noor
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 5 No. 2 (2021)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rbaet.2021.005.02.02

Abstract

Metode Maserasi Berbantu Gelombang Ultrasonik untuk Ekstraksi Pigmen Merah-Ungu dari Enam Varietas Bayam Merah. Pewarna alami banyak digunakan untuk memberikan warna pada makanan. Bayam merah merupakan tanaman yang cocok digunakan untuk memberikan warna merah karena keberadaannya melimpah. Maserasi merupakan metode ekstraksi yang masih digunakan saat ini karena pengoperasiannya mudah. Namun demikian, metode maserasi membutuhkan optimalisasi karena penggunaannya membutuhkan waktu yang lama. Ekstraksi berbantu gelombang ultrasonik digunakan untuk memendekkan waktu ekstraksi. Pada penelitian ini, ektraksi pigmen merah ungu menggunakan metode maserasi untuk enam varietas bayam merah telah dilakukan. Variasi perbandingan bayam merah dengan campuran larutan etanol 96% dan asam sitrat 10% adalah 1:7, 1:9, 1:11, dan 1:13. Absorbansi tertinggi untuk Delima, Abbang, Baret Merah, dan Mira diperoleh dari perbandingan massa/pelarut 1:7, sementara untuk Red dan Clara dari 1:9. Perbandingan massa/pelarut optimum untuk setiap varietas kemudian digunakan pada ekstraksi berbantu gelombang ultrasonik. Ekstraksi dilakukan pada 5, 10, dan 15 menit. Pada varietas Red, Abbang, Baret Merah, Mira dan Clara, absorbansi pigmen merah-ungu tertinggi didapatkan pada waktu 15 menit sementara Delima pada 5 menit. Hasil penelitian menunjukkan bahwa ekstraksi berbantu gelombang ultrasonik pada pigmen merah-ungu dari bayam merah lebih efektif daripada maserasi 24 jam.
Phosphate Accumulation Using MgO-Fe3O4/Agarose/Oxalic Acid Gel as a Diffusive Gradient in Thin Films (DGT) Binding Layer Dinira, Layta; Rafif, Sullahudin Ahmad; Ulayya, Salwa; Rumhayati, Barlah; Darjito, Darjito; Sabarudin, Akhmad
EduChemia: Jurnal Kimia dan Pendidikan Vol 10, No 1 (2025)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v10i1.29113

Abstract

Monitoring phosphate concentration in waters is critical because excessive phosphate can lead to the death of aquatic organisms. Phosphate can be monitored via a passive sampler called Diffusion Gradient in Thin Films (DGT). This study combines MgO and Fe3O4 impregnated in agarose crosslinked with oxalic acid to accumulate phosphate from the solution as a DGT binding gel. The parameters observed in this study were MgO/Fe3O4 mass ratio (1:3, 1:1, 3:1), accumulation time (20, 40, 60, 120, 240, and 1440 min), phosphate concentration (0.2, 0.4, 0.6, 0.8, and 1 mg/L) and pH (4, 5, 6, 7, and 8) on phosphate accumulation. XRD pattern confirmed that the adsorbents used were MgO and Fe3O4. SEM analysis showed that the gel had an average pore size of 31.78 μm, and the adsorbents were evenly distributed. Gel with MgO/Fe3O4 mass ratio 3:1 can adsorb phosphate up to 97.19 ± 0.36%. The phosphate accumulation reached optimum after a minimum adsorption time of 4 hours and when the phosphate concentration in the solution was 0.4 mg/L. The solution's pH had no significant effect on phosphate accumulation. This study shows that MgO-Fe3O4/agarose/oxalic acid gel is an excellent binding gel to accumulate phosphate from water.
Pendampingan Sertifikasi Halal Jalur Sehati (Self-Declare) Bagi Pelaku Usaha Mikro Kecil di Kecamatan Pujon Safitri, M.Sc., Ph.D (Scopus ID : 57189988164; Wardhani, Sri; Indahyanti, Ellya; Dinira, Layta; Rosalin, Sovia; Kornitasari, Yenny
TRI DHARMA MANDIRI: Dissemination and Downstreaming of Research to the Community (Journal of Community Engagement) Vol 3 No 1 (2023)
Publisher : SMONAGENES Research Center, Univeritas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtridharma.2023.003.01.1

Abstract

Menguatnya industri halal di Indonesia berimplikasi positif pada peningkatan tingkat perekonomian masyarakat. Sertifikasi halal selain sebagai bentuk perlindungan terhadap jaminan kehalalan produk, juga memberikan nilai tambah yang berimplikasi positif terhadap volume produksi dan penjualan. Sertifikasi halal adalah suatu proses untuk memperoleh sertifikat halal melalui beberapa tahap pemeriksaan untuk membuktikan bahwa bahan, proses produksi, dan sistem jaminan halal dapat memenuhi standar Badan Penyelenggara Jaminan Produk Halal. Tujuan dari kegiatan pengabdian kepada masyarakat ini adalah pendampingan pendaftaran Nomor Induk Berusaha (NIB) bagi Usaha Mikro dan Kecil (UMK); pendampingan tentang peraturan jaminan produk halal bagi industri makanan dan minuman UMK; serta pendampingan pengajuan sertifikasi halal bagi UMK. Metode pelaksanaan kegiatan yaitu melalui sosialisasi, pendampingan pengisian persyaratan, dan pengajuan sertifikasi produk halal. Hasil kegiatan adalah pemahaman pelaku usaha tentang jaminan produk halal bagi pelaku UMK di sektor pangan, pendaftaran sertifikasi halal bagi pelaku usaha, dan sertifikat halal bagi UMK yang telah turun sebanyak 10 sertifikat halal.
Empowerment of Farmers and Residents in Silage, Concentrate and Complete Feed Processing Technology Huda, Asri Nurul; Wardhani, Sri; Safitri, Anna; Dinira, Layta; Gatrananda, Sayyid Izzudin; Arief, Miftahudin
International Journal of Community Service Learning Vol. 9 No. 2 (2025): May
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijcsl.v9i2.84769

Abstract

Low knowledge and skills of farmers and residents in processing animal feed efficiently and sustainably. Although the potential for local raw materials is quite abundant, many farmers still rely on conventional methods that are less effective, which has an impact on the quality and availability of animal feed, especially in the lean season. Lack of access to appropriate technology and ongoing assistance are also major obstacles to increasing the productivity of the community livestock sector. The purpose of this study was to identify and formulate effective empowerment strategies for farmers and residents in developing and applying silage, concentrate, and complete feed processing technology. The type of research used is participatory action research (PAR) combined with field experimental research. The methods used include social approaches, training, and intensive assistance to target groups. The population in this study were farmers and residents involved in livestock activities, especially ruminant livestock. Data analysis is a qualitative analysis carried out for data from interviews, observations, and documentation using thematic analysis techniques or the Miles & Huberman model. The results of the activity showed an increase in farmers' skills in processing feed independently. The implications of this activity are increased livestock productivity, feed cost efficiency, and optimal utilization of local resources while reducing dependence on commercial feed.
Development of Web-based Geographic Information System for Water Quality Monitoring of Watershed in Malang Rosyida, Novita; Dinira, Layta; Rusydi, Alfi Nur; Saputra, Agung Dwi; Setiabudi, Ginanjar
INTENSIF: Jurnal Ilmiah Penelitian dan Penerapan Teknologi Sistem Informasi Vol 6 No 2 (2022): August 2022
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/intensif.v6i2.17514

Abstract

Human activity and climate change significantly impact water quality, especially in Malang's watershed. This research aims to develop a web-based Geographic Information System (Web- GIS) for water quality monitoring in that watershed. The water quality data had been collected from Enviromental Office of Malang District and Malang City. Water quality in this application was determined using the STORET method, comparing water quality data to water quality standards according to Government regulation so that the water quality status at each monitoring point will be known. The total 57 monitoring points are visualized spatially in this application based on the sampling location plotted by Global Positioning System (GPS). The longitude and latitude coordinates of the monitoring location had been converted in GeoJSON using Quantum GIS (QGIS) software. Google Map API key was used to display a sampling location map on the website. Web-GIS application was tested functionally using a black box, compatibility, and usability testing. Based on the testing results, it worked correctly on Chrome, Edge, Mozilla, and Opera browsers for PC/Laptops and also for browsers on Android smartphones version 4 and above. The application could be appropriately used and efficiently based on usability testing results.
Modifikasi Elektroda Karbon Screen-Printed dengan Magnetit-Silika-Polimer Cetak Ion untuk Sensor Pb(II) Secara Square Wave Voltammetry (SWV) Nugraha, Hedhi Setya; Mulyasuryani, Ani; Sabarudin, Akhmad; Dinira, Layta; Fardiyah, Qonitah
ALCHEMY:Journal of Chemistry Vol 13, No 2 (2025): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v13i2.36777

Abstract

Elektroda karbon cetak layar (SPCE) telah dimodifikasi dengan Fe₃O₄@SiO₂-ion imprinted polymer (IIP) untuk meningkatkan selektivitas terhadap ion Pb²⁺. Hasil voltametri siklik menunjukkan peningkatan signifikan pada kinetika transfer elektron, dengan koefisien difusi masing-masing 1,79 × 10⁻⁵ cm²/s untuk [Fe(CN)₆]³⁻/⁴⁻ dan 0,0314 cm²/s untuk Pb(II), dibandingkan SPCE tanpa modifikasi (5,76 × 10⁻⁶ cm²/s dan 0,00093 cm²/s). Optimasi parameter square wave voltammetry (SWV) menghasilkan kondisi optimum pada amplitudo 0,01 V dan frekuensi 10 Hz, dengan batas deteksi (LOD) 0,219 ppb serta linearitas sangat baik (Ip = 0,207C; R² = 0,998) pada rentang konsentrasi 1–10 ppb. Temuan ini menunjukkan bahwa SPCE termodifikasi Fe₃O₄@SiO₂-IIP berpotensi sebagai sensor yang selektif dan sensitif untuk deteksi Pb²⁺ dalam aplikasi keamanan pangan dan pemantauan lingkungan.
Diversification of Papaya Processing for Independence and Economic Improvement of the Lumpang Sewu Farmer Ratna Juwita; Anindyah Sutra Karury; Amelia Mazidatul Mufida; Hanjar Ikrima Nanda; Layta Dinira
Indonesian Journal for Social Responsibility Vol. 8 No. 01 (2026): June 2026
Publisher : LPkM Universitas Bakrie

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36782/ijsr.v8i01.545

Abstract

Ponggok Village, Blitar Regency, is one of the papaya production centers in East Java with abundant harvests every year. Unfortunately, most papayas are only sold fresh without further processing, and even young papayas and their skins are often wasted. This problem continues to occur every year. Therefore, this community service program aims to empower the Lumpang Sewu Farmer Group through training in the production of economically valuable papaya products. The products developed include papaya floss, papaya chips, papaya candy, and eco-enzymes from papaya peels. The program was implemented through observation, preparation of tools and materials, product testing, training, and business evaluation and assistance. The results of the activities show a significant increase in the knowledge and skills of the participants, as evidenced by the pretest and posttest results and participant testimonials. All participants stated that they were 100% capable of producing the products, and 95% were interested in selling them. This program not only provides practical skills but also encourages economic independence and the sustainable utilization of local potential.
Modifikasi Kitosan sebagai Komposit Biopolimer untuk Pemisahan Pb(II) dan Cd(II) secara Simultan pada Sistem Multikomponen Dinira, Layta
Indonesian Green Technology Journal Vol. 11 No. 1 (2022): Indonesian Green Technology Journal
Publisher : Sekolah Pascasarjana, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.igtj.2022.011.01.04

Abstract

Biopolimer diketahui jumlahnya melimpah dan memiliki toksisitas rendah. Hal tersebut sesuai dengan kebutuhan adsorben saat ini, yaitu murah, ramah lingkungan, dan efisiensi tinggi. Biopolimer berbasis polisakarida seperti kitosan potensial untuk dijadikan adsorben karena karakteristik fisiko-kimianya masih dapat terus dieksplorasi. Metode yang digunakan dalam penulisan artikel ini adalah literature review yang dilakukan dengan cara mengumpulkan sumber data yaitu jurnal ilmiah 10 tahun terakhir yang terkait dengan pemanfaatan kitosan untuk pemisahan analit secara simultan. Berdasarkan literature review yang telah dilakukan, upaya peningkatan ketahanan dan adsorpsi kitosan dilakukan dengan cara menambahkan nanopartikel, partikel magnetik, bahan alam anorganik, atau material lain. Komposit kitosan yang digunakan untuk pemisahan kation Pb(II) dan Cd(II) secara simultan pada sistem multikomponen menunjukkan ion lain yang berada pada sistem biner, tersier, maupun kuartener menurunkan kapasitas adsorpsi. Adsorpsi pada sistem multikomponen lebih banyak bersifat antagonis dibanding non-interaksi dan sinergi. Selektivitas kitosan termodifikasi untuk ion Pb(II) dan Cd(II) dalam sistem multikomponen bergantung pada penggunaan material untuk modifikasi kitosan dan karakteristik ion logam seperti jari-jari dan elektronegativitas. Oleh sebab jumlah kitosan yang melimpah dan meningkatnya volume limbah cair industri yang mengandung logam berat, kitosan termodifikasi untuk adsorpsi ion logam multikomponen potensial dikembangkan di Indonesia. Kata kunci: kitosan termodifikasi, pemisahan, ion logam, multikomponen, simultan
Koefisien Difusi Ion Fosfat dalam Gel Asam Sitrat-Agarosa yang Digunakan dalam Gradien Difusif pada Sampler Pasif Film Tipis (DGT) Digwanggi Arum Tazkiyatu An-Nufuus; Barlah Rumhayati; Qonitah Fardiyah; Diah Mardiana; Ulfa Andayani; Layta Dinira
Jurnal Penelitian Pendidikan IPA Vol 9 No 8 (2023): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i8.3593

Abstract

In this research, the diffusion coefficient of phosphate ions in agarose-citric acid diffusive gel has been studied. The agarose-citric acid diffusion layer was prepared by mixing 1.5% agarose solution with the addition of citric acid solutions at various concentration. The diffusive gel was casted between two glass plates which were separated using a spacer of 0.1 cm thickness and clamped together in the three sides. Gel was formed for 15 minutes in an oven at 40oC. The diffusion coefficient then was calculated using Fick's First law formula. Gel that produced with addition of 0.45% citric acid absorbed more water during immersion in water for 3 hours for facilitating phosphate diffusion. Swelling degree of the agarose citric acid diffusive gels was not affected by the storing solution condition either in water or in NaNO3 0.1 M. Coefficient diffusion of phosphate in the agarose-citric acid diffusive gel was 1.009×10-7 cm2s-1, less than the diffusion in the pure agarose gel 1.367×10-7 cm2s-1. The diffusion is affected by the ionic strength of solution. Phosphate diffusion coefficient is higher in the phosphate solution with addition of 2 mgL-1 nitrate. Increasing the ionic strength causes lower phosphate diffusion coefficient because the electrostatic attractive and repulsive force
Co-Authors Adam Wiryawan Adam Wiryawan Adam Wiryawan Akhmad Sabarudin Alfi Nur Rusydi Amelia Mazidatul Mufida Ani Mulyasuryani Anindyah Sutra Karury Anna Safitri Arief, Miftahudin Asri Nurul Huda Barlah Rumhayati Barlah Rumhayati Barlah Rumhayati Barlah Rumhayati Barlah Rumhayati Darjito Darjito Diah Mardiana Diah Mardiana Digwanggi Arum Tazkiyatu An-Nufuus Eka Ratri Noor Wulandari Eko Waluyo Ellya Indahyanti Gatrananda, Sayyid Izzudin Nanda, Hanjar Ikrima Nugraha, Hedhi Setya Qonitah Fardiyah Qonitah Fardiyah Rachmat Triandi Tjahjanto Rafif, Sullahudin Ahmad Ratna Juwita Rosalin, Sovia Rosyida, Novita Safitri, Anna Safitri, M.Sc., Ph.D (Scopus ID : 57189988164 Sakhiyah Afifah Saputra, Agung Dwi Setiabudi, Ginanjar Sovia Rosalin Sri Wardhani Ulayya, Salwa Ulfa Andayani Ulfa Andayani Ulfa Andayani, Ulfa Yenny Kornitasari Yenny Kornitasari, Yenny