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All Journal Jurnal Entropi Sainstek AKADEMIKA 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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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.
Perbandingan Aktivitas Antioksidan Ekstrak Etil asetat dan Metanol Daun Tumbuhan Matoa (Pometia pinnata) Situmeang, Boima; Musa, Weny JA; Mulyadi, Agus; Ibrahim, Agus Malik; Widiyanto, Holisha; Bialangi, Nurhayati
Jurnal Penelitian Sains Vol 26, No 1 (2024)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/jps.v26i1.919

Abstract

Matoa (Pometia pinnata) is a plant from the Sapindaceae family that is widely distributed throughout the Asia-Pacific region, including Indonesia, Malaysia, Thailand, and Sri Lanka. In Indonesia, the Matoa plant is commonly found in Java, Sumatra, and Papua. Empirically, the leaves of the Matoa plant have been utilized by the community as a traditional remedy for treating hypertension, fever, and diarrhea. The aim of this study was to test the antioxidant activity of ethyl acetate extract and methanol extract of Matoa leaves. Extraction was performed using the maceration method. The antioxidant activity was evaluated using UV-Visible spectroscopy. The free radical used was DPPH at a concentration of 50 ppm. The absorbance was measured at a wavelength of 517 nm. The antioxidant activity of the ethyl acetate extract of Matoa leaves was 38.87 ppm and 37.73 ppm. The antioxidant activity of the methanol extract of Matoa leaves was 27.99 ppm and 33.25 ppm. Based on the antioxidant activity values, both the ethyl acetate and methanol extracts of Matoa leaves have the potential as a source of natural antioxidants. 
Analysis of Total Polyhenolic Content and Antioxidant Activity from n-hexane, Ethyl acetate and Ethanol Extract of Kitolod (Hipobbroma longiflora) Leaf Situmeang, Boima; Faradin, Faradin; Susvira, Dian; Bialangi, Nurhayati; Widiyanto, Holisha; Yulianti, Nani; Jinanti, Nazwa
Jurnal Penelitian Sains Vol 27, No 2 (2025)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/jps.v27i2.1182

Abstract

Isotoma longiflora, commonly known as Kitolod, has been traditionally used as a medicinal plant for treating various ailments. This study aims to extract Kitolod leaves using three different solvents with varying polarities: n-hexane (non-polar), ethyl acetate (semi-polar), and ethanol (polar). The total phenolic content, total flavonoid content, and antioxidant activity were analyzed using a spectrophotometer. The trends observed in both TFC and TPC results indicate that ethyl acetate is the most effective solvent for extracting bioactive compounds from Kitolod leaves. The ethyl acetate extract of Kitolod leaves exhibited the highest antioxidant activity (150.542 ± 3.917 ppm), followed by the ethanol (157.235±0.858 ppm) and n-hexane (217.345 ± 1.749 ppm) extracts. This suggests that ethyl acetate is the most effective solvent for extracting bioactive compounds with antioxidant properties from Kitolod leaves.
The Effect of STEM Integrated Project Based Learning Model on Students' Collaboration Skills in Atomic Structure Haleda, Padria; Isa, Ishak; Munandar, Haris; Bialangi, Nurhayati; Tangio, Julhim S; Thayban, Thayban; Kurniawati, Erga
Jambura Journal of Educational Chemistry Vol 7, No 2 (2025): August
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjec.v7i2.33896

Abstract

The objective of this research is to investigate the influence of the Project-Based Learning (PjBL) model, when integrated with the STEM approach, on students’ collaborative abilities in the topic of atomic structure. The study is motivated by the persistent issue of low collaboration levels among chemistry learners, particularly when dealing with abstract subject matter. Employing a quantitative methodology with a quasi-experimental design—specifically the Non-Equivalent Control Group Design—the research was conducted with two tenth-grade classes at SMA Negeri 1 Suwawa, designating one as the experimental group and the other as the control group. Data were gathered through observation sheets that measured five aspects of collaboration: cooperation, responsibility, communication, adaptability, and compromise. The findings revealed a notable enhancement in collaborative skills within the experimental class following the application of the STEM-integrated PjBL model. The average final observation score for this group reached 76%, surpassing the control group’s 61%. The N-Gain score for the experimental group fell within the medium category (0.48), whereas the control group’s score was classified as low (0.17). Improvements were recorded across all collaboration indicators. Overall, the results suggest that the STEM-integrated PjBL model is effective in fostering collaboration skills and can be recommended as an alternative instructional approach for other chemistry topics to advance 21st-century skill development.
Analysis of Students' Level of Understanding of Hydrocarbon Concepts Using a Three-Level Diagnostic Multiple-Choice Approach Olii, Marsya Divya; Bialangi, Nurhayati; Tangio, Julhim S; Sihaloho, Mangara; Kurniawati, Erga
Jambura Journal of Educational Chemistry Vol 7, No 2 (2025): August
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjec.v7i2.33603

Abstract

This research aims to determine students' conceptual understanding ability of hydrocarbon material using a three-tier multiple-choice diagnostic test instrument. The research was conducted at SMA Negeri 2 Wonosari using a descriptive qualitative approach. The research was carried out in the even semester of the 2024/2025 academic year. The research subjects were the students of class XI B at SMA Negeri 2 Wonosari, with a sample size of 28 students. The instrument used consisted of 15 three-tier multiple-choice questions covering answers, reasoning, and the student's confidence levels. The validity and reliability of the instrument were tested through expert analysis and empirical testing using the Rasch model. Data collection was carried out using the three-tier multiple-choice test. After obtaining the students' responses, the answers were analyzed and categorized based on conceptual understanding levels: Understanding the Concept (UC), Negative Misconception (NM), Positive Misconception (PM), and Not Understanding the Concept (NUC). The results indicate that the average percentage of conceptual understanding was 29.05%, categorized as low; negative misconceptions were 23.10%, also categorized as low; postitive misconceptions were 10.24% categorized as very low; and not understanding the conceptions 37.62%, categorized as low. In conclusion, students of class XI B at SMA Negeri 2 Wonosari showed the lowest average level of conceptual understanding compared to those experiencing misconceptions or lacking scientific understanding of the concept.
FORMULASI EKSTRAK DAUN KITOLOD (HIPOBROMA LONGIFLORA) DALAM SEDIAAN OBAT KUMUR ALAMI TERHADAP BAKTERI STREPTOCOCCUS MUTANS Situmeang, Boima; Dzulhijar; Juliandoz; Ahmad Fajar Muzakir; Agus Malik Ibrahim; Nani Yulianti; Nurhayati Bialangi; Weny JA Musa
Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Vol. 7 No. 2 (2025): Literasi Artikel Penelitian Kimia
Publisher : Program Studi Kimia, Fakultas MIPA, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/jc.v7i2.5802

Abstract

The kitolod plant (Hippobroma longiflora) has been demonstrated to possess antibacterial activity against Streptococcus mutans, the bacterium responsible for the development of dental caries. The objective of this study was to formulate a mouthwash preparation using kitolod leaf extract. The extract was formulated into three distinct formulations. The mouthwash was evaluated for its pH, viscosity, stability, and antibacterial activity. The antibacterial evaluation was executed in accordance with the Kirby-Bauer method. The positive control utilized in this study was 0.2% chlorhexidine. The pH test results indicated that all three formulations had a pH of 6. The viscosity test demonstrated that all formulations had a viscosity of 0.99, which is close to that of water. The antibacterial evaluation against S. mutans indicated that formulation 2 demonstrated the most pronounced antibacterial activity, exhibiting an inhibition zone measuring 3.81 mm. All three formulations exhibited stability at ambient temperature. In light of the findings from this study, it can be posited that formulation 2 possesses the potential to serve as a natural mouthwash.
AKTIVITAS ANTIOKSIDAN HIDROLISAT PROTEIN TULANG IKAN SELAR BENTONG (Selar Crumenophthalmus) HASIL HIDROLISIS ENZIM PAPAIN Hadji, Fitri; Botutihe, Deasy N.; Najmah, Najmah; Bialangi, Nurhayati; Kunusa, Wiwin Rewini
Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Vol. 7 No. 2 (2025): Literasi Artikel Penelitian Kimia
Publisher : Program Studi Kimia, Fakultas MIPA, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/jc.v7i2.6186

Abstract

Ikan selar bentong (Selar crumenophthalmus) merupakan salah satu ikan pelagis kecil yang banyak terdapat di perairan Gorontalo dan memiliki nilai ekonomis penting. Hasil perikanan samping berupa tulang ikan masih jarang dimanfaatkan, meskipun kandungan proteinnya cukup tinggi dan berpotensi menghasilkan produk bernilai fungsional. Penelitian ini bertujuan untuk mengkarakterisasi hidrolisat protein tulang ikan selar bentong serta mengaktifkan aktivitas antioksidannya. Hidrolisis dilakukan menggunakan enzim papain dengan konsentrasi 2%, 4%, dan 6% selama 4 jam pada kondisi optimal. Parameter yang dianalisis meliputi kadar protein, derajat hidrolisis, uji kualitatif asam amino, serta aktivitas antioksidan menggunakan metode ABTS. Hasil penelitian menunjukkan bahwa kadar protein tulang ikan meningkat dari 10,47% pada kondisi mentah menjadi 33,19% pada konsentrasi enzim 2%, 35,08% pada konsentrasi 4%, dan 37,35% pada konsentrasi 6%. Nilai derajat hidrolisis juga meningkat dengan penambahan enzim, dengan nilai tertinggi 83,16% pada konsentrasi 6%. Aktivitas antioksidan terbaik ditunjukkan pada konsentrasi enzim 6% dengan nilai IC50 sebesar 0,98 mg/mL, mendekati vitamin C (0,12 mg/mL). Simpulan dari penelitian ini adalah hidrolisat protein tulang ikan selar bentong berpotensi sebagai sumber antioksidan alami yang dapat diterapkan dalam pengembangan fungsional pangan maupun suplemen kesehatan. Kata kunci : ikan selar bentong, protein hidrolisat, papain, antioksidan, ABTS
Analisis Kandungan Unsur Fosfor dan Nitrogen serta Pembuatan Pupuk Organik dari Sedimen Danau Limboto Musa, Weny J.A; Pakaya, Agustina H.; Bialangi, Nurhayati; Isa, Ishak; Mohamad, Erni; Kunusa, Wiwin Rewini
Jambura Journal of Chemistry Vol 6, No 2 (2024): August
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jambchem.v6i2.16025

Abstract

Sedimen merupakan bahan organik dan anorganik yang dapat mempengaruhi kualitas air. Sedimen biasanya mengandung Fosfor dan Nitrogen. Fosfor dan Nitrogen merupakan unsur hara makro yang diperlukan dalam proses pertumbuhan tanaman. Penelitian ini bertujuan untuk mengetahui kandungan fosfor (P) dan nitrogen (N) pada sedimen danau limboto maupun pupuk organik yang dibuat serta pengaruh pupuk organik terhadap tanaman kangkung darat. Analisis kandungan fosfor (P) menggunakan metode Spektrofotometer Uv-Vis. Sementara untuk kandungan nitrogen (N) menggunakan metode kjedhal. Untuk pengaplikasiannya dilakukan pada tanaman kangkung darat. Hasil yang diperoleh menunjukkan bahwa pada 3 sampel sedimen danau limboto untuk kandungan fosfor (P) dan Nitrogen (N) tergolong sangat tinggi. Kandungan fosfor (P) masing-masing sebesar titik 1= 0,48%, titik 2 = 0,45%, titik 3 = 0,44% dan kandungan nitrogen (N) sebesar titik 1= 12,35%, titik 2 = 13,7%, titik 3 = 17,85%. Sementara itu, pupuk organik yang dibuat, kualitas fisiknya memenuhi standar yaitu berwarna coklat kehitaman, berbau tanah dan teksturnya tidak menggumpal. Untuk hasil uji kadar fosfor (P) dan nitrogen (N) pada pupuk organik diperoleh masing-masing sebesar 22,675% dan 1,76%. Pada pengaplikasian pupuk organik, Tanaman kangkung darat mengalami perkembangan dalam setiap minggu setelah tanam (mst) baik tinggi maupun jumlah daunnya.
ANALISIS KANDUNGAN UNSUR KALSIUM (CA) DAN KALIUM (K) SERTA PEMBUATAN PUPUK ORGANIK DARI SEDIMEN DANAU LIMBOTO Giu, Fitri Ani; Musa, Weni J.A; Bialangi, Nurhayati; Isa, Ishak; Mohamad, Erni; Kunusa, Wiwin Rewini
Jambura Journal of Chemistry Vol 6, No 1 (2024): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jambchem.v6i1.14694

Abstract

ABSTRAK Penelitian ini bertujuan untuk mengetahui kandungan Kalsium (Ca) dan Kalium (K) pada sedimen menggunakan metode kualitatif dan kuantitatif (AAS ). Pupuk organik menggunakan metode Kualitatif pada sedimen danau Limboto. Berdasarkan hasil penelitian uji kualitatif didapatkan kandungan unsur kalsium dan kalium pada sedimen dan uji kuantitatif kadar (Ca) 6,16%, 6,16% dan 5,73% dan Kalium (K) 0,10%, 0,09% dan 0,08% yang memenuhi standar kebutuhan tanaman. dan berdasarkan hasil pengujian kuantitatif di dapatkan pupuk organik dari Sedimen danau limboto mengandung kalsium dan tidak mengandung Kalium hal ini disebabkan pereaksi yang digunakan sudah teroksidasi Kata kunci : Danau Limboto, Sedimen, Pupuk Organik, Kalsium, Kalium, AAS.
Karakterisasi Kitosan dari Cangkang Sotong (Sepia officinalis) dari Pantai Tanjung Kramat Kota Gorontalo: Characterization of Chitosan from Cuttlefish Shells (Sepia officinalis) from Tanjung Kramat Beach, Gorontalo City Stasya Anggriani Talib; Nurhayati Bialangi; Arviani; Yuszda K. Salimi; Deasy Natalia Botutihe
Jurnal Kolaboratif Sains Vol. 8 No. 10: Oktober 2025
Publisher : Universitas Muhammadiyah Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56338/jks.v8i10.8866

Abstract

Kitosan, biopolymer kationik alami dari deasetilasi kitin eksoskeleton hewan laut, memiliki sifat biokompatibilitas, biodegradabilitas, dan non-toksisitas yang menarik untuk berbagai aplikasi. Penelitian ini bertujuan untuk mengkarakterisasi kitosan yang diisolasi dari limbah cangkang sotong yang diperoleh dari Pantai Tanjung Kramat, Kota Gorontalo dengan focus rendemen, kadar air, dan analisis Fourier Transform Infrared (FITR). Proses isolasi melibatkan tahap demineralisasi, deproteinasi, dan deasetilasi. Hasil penelitian menunjukkan rendemen kitosan tertinggi 28% pada perlakuan HCl 5%, sedangkan kadar air seluruh sampel berkisar antara 2,00-2,21% dan memenuhi standar SNI 7949:2013 (?12%). Analisis FTIR mengidentifikasi gugus fungsi utama dan derajat deasetilasi (DD) tertinggi mencapai 80,17% pada perlakuan HCl 7%, memenuhi standar mutu (?75%). Penelitian ini memberikan wawasan penting mengenai potensi cangkang sotong sebagai sumber kitosan berkualitas.
Co-Authors Agus Malik Ibrahim Agus Malik Ibrahim Ahmad Fajar Muzakir Ahmad Kadir Kilo 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 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 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