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All Journal Jurnal Entropi Sainstek AKADEMIKA Biology, Medicine, & Natural Product Chemistry Jurnal Penelitian Sains JURNAL PENDIDIKAN GLASSER Jurnal Pendidikan Kimia (JPKim) Indonesian Journal of Chemistry Indonesian Journal of Pure and Applied Chemistry Chemistry Indonesian Journal of Chemical Research Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Jambura FIsh Processing Journal Jambura Journal of Educational Chemistry Jambura Journal of Chemistry Jurnal Riset Pendidikan Kimia (JRPK) Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Stannum : Jurnal Sains dan Terapan Kimia SPIN: Jurnal Kimia & Pendidikan Kimia Jurnal Kolaboratif Sains CHEDS: Journal of Chemistry, Education, and Science Pentagon: Jurnal Matematika dan Ilmu Pengetahuan Alam Damhil: Jurnal Pengabdian kepada Masyarakat Journal of Community Services on Multidisciplinary Sciences Jurnal Pendidikan Kimia, Fisika dan Biologi Konstanta : Jurnal Matematika dan Ilmu Pengelatuan Alam
Nurhayati Bialangi
Universitas Negeri Gorontalo
Religion Agriculture, Biological Sciences & Forestry Arts Humanities 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 Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Other

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Identifikasi Kesulitan Belajar Siswa dalam Memahami Konsep Kimia Koloid di Kelas XI SMA Laliyo, Lukman; Djalil, Moh. Rifaldi; Bialangi, Nurhayati
Jurnal Riset Pendidikan Kimia (JRPK) Vol. 13 No. 1 (2023): Jurnal Riset Pendidikan Kimia (JRPK), Volume 13 Nomor 1 (2023)
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JRPK.131.05

Abstract

Penelitan ini bertujuan untuk mengetahui kesulitan belajar siswa dalam memahami materi kimia koloid berdasarkan indikator. Penelitian ini dilakukan di salah satu SMA Kota Gorontalo dengan jenis penelitian deskriptif kualitatif, Poplasinya adalah seluruh kelas XI. Sampel penelitian ini sebanyak 60 siswa yang diambil dari kelas XI tersebut. Instrument yang digunakan adalah instrument tes diagnostik Three-tier multiple choice dengan 15 butir soal. Hasil uji coba instrument diperoleh validitas isi sebesar 97,7%. Hasil penelitian ini diperoleh bahwa (1) Kesulitan Belajar siswa pada materi koloid tergolong tinggi dan terletak disemua indikator pada materi koloid; (2) Kesulitan tertinggi terletak pada menganalisis pembuatan koloid degan persentase kesulitan belajar sebesar 79,15% dan dikategorikn tinggi. Fakta ini menunjukkan bahwa kesulitan belajar siswa pada materi koloid tergolong tinggi.
Identifikasi Senyawa Metabolit Sekunder Ekstrak Metanol Daun Pletekan (Reullia tuberosa L.) Nur Rafida Akub; Nurhayati Bialangi; Weny J.A Musa; Yuszda K. Salimi; Wiwin Rewini Kunusa; Ahmad Kadir Kilo
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Maret : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i1.392

Abstract

Indonesia is renowned for its abundant and diserve natural resources, including various plants. Many medicinal plants are traditionally utilized due to their therapeutic benefits. The utilization of minnieroot leaves as a traditional medicine shuld be supported by comprehensive studies to identify the active compounds, thereby omproving their quality, safety and afficacy. Secondary metabolites in minnieroot, particularly in the leaves, contain polyphenolic compounds, while the roots are known to contain flavonoids. This study aims to identify secondary metabolite compounds in minnieroot (Reullia tuberosa L.) leafs methanol extract. The study utilized methanol as a solvent for the extract solution became colorless, resulting in a extract yield of 8,02% of the leaf’s weight. The qualitative test confirmed the presence of secondary matebolites, specifically flavonoids and tannin in the methanol extract of minnieroot leaves. The final result from column chromatography separation shows that crystals are formed in the sixth vial. The crystals areb brownish blackn in color and weigh 0, 1235 g.
Uji Organoleptik & Karakteristik Fisikokimia Serta Aktivitas Antioksidan Produk Susu Berbasis Kacang Sacha Inchi (Plukenetia volubilis L.) Nurfadilah M. Kasim; Netty Ino Ischak; Yuszda K. Salimi; Nurhayati Bialangi; La Ode Aman; Erni Mohamad
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Maret : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i1.412

Abstract

This research aims to formulate and examine the physicochemical characteristics and antioxidant activity of sacha inchi (Plukenetia volubilis L.) as a plant-based milk. Moreover, this research also aims to conduct organoleptic tests on the products. The sacha inchi milk is formulated with five ratios: SI1 (sacha inchi 1:10 parts water), SI2 (sacha inchi 2:10 parts water), SI3 (sacha inchi 3:10 parts water), SI4 (sacha inchi 4:10 parts water), and SI5 (sacha inchi 5:10 parts water). Organoleptic tests are carried out by assessing the aspects of taste, color and aroma of the product with a score range of 1 (least preferred) - 5 (most preferred). The results of the organoleptic test showed that the most preferred sacha inchi peanut milk formulation was SI5 with a preference level reaching a score of 4.48. The SI5 formulation is more dominantly preferred because it is richer in taste, color and aroma. Then continued with physicochemical testing which includes water content, ash content, fat content, protein content, carbohydrate content, calcium content, pH, and viscosity and IC50 antioxidant activity test using UV-Vis Spectrophotometer instrument. The results of physicochemical tests and IC50 antioxidant activity conducted in this study were respectively: water content (74.10%), ash content (0.65%), fat content (19.15%), protein content (4.29%), carbohydrate content (1.82%), calcium content (0.043%), pH (6.01), viscosity (209 mPa∙S), and IC50 antioxidant activity (429.10 ppm).
Pelatihan Pembuatan pupuk Organik dari Limbah Cucian Beras (L-AIBER) dan Limbah Kulit Nenas pada masyarakat Desa Bulotalangi Timur Mohamad, Erni; Bialangi, Nurhayati; Sihaloho, Mangara; Tangio, Julhim S; Zakaria, Perry
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 3, No 2: December 2024
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/damhil.v3i2.29552

Abstract

Pengabdian kepada masyarakat ini bertujuan untuk memberikan pelatihan tentang pembuatan pupuk organik cair dari limbah cucian beras (L-AIBER) dan limbah kulit nanas kepada masyarakat Desa Bulotalangi Timur. Pelatihan ini diadakan sebagai upaya untuk meningkatkan kesadaran dan keterampilan masyarakat dalam memanfaatkan limbah rumah tangga menjadi produk yang bernilai guna tinggi serta ramah lingkungan.Metode yang digunakan dalam pelatihan ini meliputi penyampaian materi secara teoritis mengenai manfaat dan teknik pembuatan pupuk organik cair, diikuti dengan praktek langsung pembuatan pupuk oleh peserta. Hasil dari pelatihan menunjukkan bahwa peserta mampu memahami dan mempraktekkan teknik pembuatan pupuk organik cair dengan baik. Selain itu, pelatihan ini juga berhasil meningkatkan pengetahuan peserta mengenai pentingnya pengelolaan limbah rumah tangga dan manfaat pupuk organik bagi pertanian.Melalui program ini, diharapkan masyarakat Desa Bulotalangi Timur dapat secara mandiri memproduksi pupuk organik cair, mengurangi ketergantungan pada pupuk kimia, dan meningkatkan kualitas hasil pertanian. Program ini juga diharapkan dapat menjadi contoh bagi desa-desa lain dalam mengelola limbah rumah tangga secara produktif dan berkelanjutan.Kata Kunci: pelatihan, POC,  cucian beras,  kulit nanas
Penguatan Pemahaman Dasar Kimia Organik melalui Pembelajaran Materi Senyawa Hidrokarbon bagi Siswa SMKN 1 Analis Kimia Gorontalo Bialangi, Nurhayati; Arviani, Arviani; Kilo, Ahmad Kadir
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 3, No 2: December 2024
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/damhil.v3i2.29750

Abstract

Strengthening fundamental concepts in organic chemistry is crucial for students' academic and industrial success. This activity aimed to deepen students' understanding of hydrocarbons, including alkanes, alkenes, and alkynes, along with their physical and chemical properties. The activity also introduced key reactions such as combustion and substitution. Through this, students learned to identify molecular structures, nomenclature, and chemical properties of hydrocarbon compounds. The teaching methods used included lectures, simulations, group discussions, laboratory practices, and assessments through tests and quizzes. Discussions helped students clarify challenging concepts like the structural differences among hydrocarbons and their associated reactions. Emphasis was placed on laboratory work to ensure that students not only grasped theoretical concepts but also gained practical skills in handling chemicals, laboratory equipment, and following safety protocols. Results from the activity showed that this approach effectively enhanced both understanding and technical abilities. Students observed the unique properties and reactivity of hydrocarbons in controlled laboratory settings, which also encouraged the development of analytical and critical thinking skills. This initiative strengthened their foundation in organic chemistry and prepared them for future challenges in the chemical industry. The combination of hands-on practices and in-depth discussions proved effective in improving students' comprehension of hydrocarbons and their chemical behavior. Furthermore, it laid the groundwork for further learning about hydrocarbon derivatives and their diverse industrial applications.
Analisis Kemampuan Pemahaman Konsep Siswa pada Materi Hidrokarbon Menggunakan Three-Tier Multiple Choice Diagnostic Instrument : Literature Review Marsya Divya Olii; Nurhayati Bialangi; Julhim S. Tangio; Mangara Sihaloho; Erga Kurniawati
Jurnal Pendidikan Kimia, Fisika dan Biologi Vol. 1 No. 3 (2025): Mei : Jurnal Pendidikan Kimia, Fisika dan Biologi
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupenkifb.v1i3.321

Abstract

This study aims to analyze students’ conceptual understanding of hydrocarbons through a literature review utilizing the Three-Tier Multiple Choice Diagnostic Instrument. Hydrocarbons are a fundamental topic in chemistry education that often leads to student misconceptions. The three-tier diagnostic instrument is designed not only to assess students’ cognitive knowledge through correct or incorrect answers but also to explore the reasoning behind their choices, enabling more accurate identification of misconceptions and conceptual understanding. The methodology employed is a literature review examining various scientific sources on the application of this diagnostic tool in teaching hydrocarbon concepts. The findings indicate that the Three-Tier Multiple Choice Diagnostic Instrument is effective in systematically detecting and classifying students’ difficulties and misconceptions. Furthermore, the use of this instrument contributes significantly to developing targeted and data-driven instructional strategies to enhance students’ conceptual mastery in chemistry. The implications of this study highlight the necessity of integrating three-tier diagnostic instruments in the assessment process to support optimal learning outcomes in hydrocarbon material.
Identifikasi Senyawa Metabolit Sekunder dan Analisis Total Fenolik Ekstrak Metanol Daun Sacha Inchi (Plukenetia volubilis linneo) yang Tumbuh di Gorontalo Nur Riska Apriana; Nurhayati Bialangi; La Alio; Yuzda K Salimi; La Ode Aman; Ahmad Kadir Kilo
Jurnal Pendidikan Kimia, Fisika dan Biologi Vol. 1 No. 3 (2025): Mei : Jurnal Pendidikan Kimia, Fisika dan Biologi
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupenkifb.v1i3.327

Abstract

Sacha inchi (Plukenetia volubilis Linneo) is a plant from the Euphorbiaceae family known for its green star-shaped fruit and brown seeds. This plant has high nutritional value and significant antioxidant activity (Nuha and Sriwidodo 2022). This study aims to identify secondary metabolite compounds and determine the total phenolic content of the methanol extract of Plukenetia volubilis Linneo leaves. The samples were extracted using the maceration method, then phytochemical tests and total phenolic content analysis were carried out using the Folin-Ciocalteu method (Sari et al. 2021). The results of the phytochemical test showed that the methanol extract of sacha inchi leaves contained secondary metabolite compounds such as alkaloids, flavonoids, saponins, and tannins. The total phenolic content obtained from the extract was 19.94%, which indicates the potential for high antioxidant activity. The results of this study indicate that sacha inchi leaves have the potential to be developed as a source of natural bioactive compounds that are beneficial to health.
Optimalisasi Pembelajaran Kimia dengan Pendekatan Multi Representasi untuk Meningkatkan Pemahaman Konsep Hidrolisis Garam Sihaloho, Mangara; Bialangi, Nurhayati; Mohamad, Erni; Tangio, Julhim S
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 4, No 1: June 2025
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/damhil.v4i1.32910

Abstract

Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pemahaman konsep hidrolisis garam melalui penerapan pendekatan multi representasi di SMAN 1 Dungaliyo. Permasalahan utama yang dihadapi siswa adalah kesulitan menghubungkan konsep makroskopik, mikroskopik, dan simbolik dalam pembelajaran kimia, yang mengakibatkan rendahnya pemahaman konseptual dan tingginya tingkat miskonsepsi. Kegiatan ini dilaksanakan melalui empat tahap, yaitu persiapan, pelaksanaan, evaluasi, dan tindak lanjut. Strategi pembelajaran mencakup pelatihan guru, pengembangan media visual dan LKPD, serta implementasi pembelajaran berbasis eksperimen, simulasi, dan notasi simbolik. Hasil kegiatan menunjukkan peningkatan signifikan dalam keterkaitan representasi kimia, kemampuan menentukan sifat larutan, menyusun reaksi dan menghitung pH, serta koreksi terhadap miskonsepsi. Lebih dari 80% siswa menunjukkan partisipasi aktif dan minat belajar yang meningkat. Pendekatan multi representasi terbukti efektif dalam menciptakan pembelajaran kimia yang bermakna, kontekstual, dan menyenangkan.
Pemanfaatan Limbah Sekam Padi sebagai Pupuk Organik Duengo, Suleman; Musa, Weny J.A; Bialangi, Nurhayati; Kilo, Ahmad Kadir
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 4, No 1: June 2025
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/damhil.v4i1.32870

Abstract

This community service program addresses the challenge of limited access to affordable and eco-friendly fertilizers in Indonesia's agricultural sector. The program focuses on transforming rice husk waste into organic fertilizer, which can enhance soil fertility and reduce dependence on synthetic fertilizers. Rice husk, a byproduct of rice milling, contains essential nutrients like potassium, phosphorus, and calcium, making it an ideal raw material for organic fertilizer. The program took place in Desa Permata, Gorontalo, a village heavily reliant on maize farming but facing a shortage of high-quality organic fertilizers. Through a series of workshops, local farmers were trained in converting rice husk into organic fertilizers, thus empowering the community and fostering sustainable farming practices. The project demonstrated the economic and environmental benefits of utilizing agricultural waste, contributing to soil health and minimizing ecological impact. The results indicate that using rice husk-based fertilizers not only improves crop yields but also supports long-term environmental sustainability. This initiative serves as a model for other regions, highlighting the potential for circular economic practices in agriculture.
Program Penghijauan sebagai Solusi Pemanfaatan Lahan Tidak Produktif di Desa Sidomukti, Motoduto, dan Talumopatu Tangio, Julhim S; Husain, Rustam I.; Laliyo, Lukman Abdul Rauf; Mohamad, Erni; Bialangi, Nurhayati; Kilo, Ahmad Kadir
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 4, No 1: June 2025
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/damhil.v4i1.32859

Abstract

This community service program aims to address the issue of unproductive land in three villages—Talumopatu, Sidomukti, and Motoduto—in Gorontalo Province by implementing sustainable land management practices. The program focused on soil conservation, organic farming, and polyculture techniques to rehabilitate degraded land, reduce erosion, and improve soil fertility. The initiative included training and workshops for local farmers to promote the adoption of environmentally friendly agricultural practices. Throughout the program, community participation was high, and significant progress was made in transforming underutilized land into productive green spaces. The project also emphasized the importance of crop diversity in preventing soil degradation. The results indicate that the program successfully improved land productivity, enhanced environmental awareness, and empowered local farmers with sustainable farming skills. The success of this program opens opportunities for similar initiatives in other regions facing environmental challenges.
Co-Authors Agus Malik Ibrahim Agus Malik Ibrahim Ahmad Fajar Muzakir Ahmad Kadir Kilo Ahmad, Halid S. Akram La Kilo Anggraini Dj Usman Ari Widiantoro Ari Widiyantoro Arviani Arviani Arviani Arviani, Arviani Astin Lukum Boima Ramses Situmeang Boima Situmeang Boima Situmeang Botutihe, Deasy N. Deasy Natalia Botutihe Diky Kurniawan Djalil, Jhodi Pratama Djalil, Moh. Rifaldi Dzulhijar Eka Puspita Sari Erga Kurniawati Erni Mohamad Faradin, Faradin Fauziah, Eka Donna giu, fitri ani Hadji, Fitri Halalutu, Hamdan Halalutu, Hamdan Haleda, Padria Haris Munandar Hendri Iyabu Hidayatullah, Ryan Holisha Widiyanto Ibrahim, Agus Malik Ibrahim, Agus Malik Ishak Isa Isna Lailatusholihah Jafar La Kilo Jinanti, Nazwa Julhim S Tangio Julhim S Tangio Julhim S. Tangio Juliandoz Julinton Sianturi Jumarni Kamarudin Kupang, Sri Revayana La Alio La Alio La Ode Aman Lailatusholihah, Isna Lailatussholihah, Isna Laliyo, Lukman Lintang Panji Setyoko Lintong, Kristin Lisdawati N. Umar Lukman A. R. Laliyo M Amrin Sunardi Mangara Sihaloho Mardjan Paputungan Marsya Divya Olii Masrid Pikoli Meli A. Rasid Miftahul Nur Moh Adam Mustapa Mohamad Adam Mustapa Muhridja, Melisa Mulyadi, Agus Musa, Weni J.A Musa, Weny J.A. Mustafid, Afif Hidayatul Najmah, Najmah Nani Yulianti Netty Ino Ischak Ngabito, Putri Amalia Nilda Apriyati Tengo Ninik Triayu Susparini, Ninik Triayu Nita Suleman Nona Wingti Posangi Nur Rafida Akub Nur Riska Apriana Nur, Dian Nurfadilah M. Kasim Nurkhaliq, Nurkhaliq Nurlaela Abd. Kadir Ode, Nur Mei Yulianty Olii, Marsya Divya Pakaya, Agustina H. Paputungan, Fadilah Alawiya Parulian, Boima Ramses Perry Zakaria R Tulie, Wina Zulviana Ramadhan, Muhammad Bagus Reski Rahmatia Idris Rifki Brahmono Idrus Risnayanti R Juramang Rustam I. Husain Sahami, Ulin Saiman Saiman Samosir, Andeston Sumandoli Saronom Silaban Setiyandani, Kurnia Indah Setyoko, Lintang Panji Situmeang, Boima Sri Wijayanti Sriwijayanti Sriwijayanti Sriwijayanti, Sriwijayanti Stasya Anggriani Talib Suleman Duengo Sumarlin Soleman Susparini, Ninik Triayu Susvira, Dian Thayban, Thayban Wenny J A Musa Weny J.A Musa Weny J.A Musa Weny JA Musa Weny Musa Widiyanto, Holisha Widy Susanti Abdulkadir Wiwin Rewini Kunusa Wiwiyani, Wiwiyani Yayurulia Hadju Yuliana Retnowati Yusuf, Risciana Yuszda K Salimi Yuszda K. Salimi Yuzda K Salimi