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All Journal Jurnal Pengolahan Hasil Perikanan Indonesia Jurnal Pembangunan Wilayah dan Kota MEDIA KOMUNIKASI TEKNIK SIPIL PILAR JURNAL KARYA TEKNIK SIPIL Journal on Mathematics Education (JME) Jurnal Teknik Sipil dan Perencanaan Jurnal Transportasi Journal of Indonesian Economy and Business Journal of Regional and City Planning Scientific Journal of Informatics Prosiding Forum Studi Transportasi Antar Perguruan Tinggi Jurnal Akuatika Indonesia Journal of Mathematics and Mathematics Education (JMME) Jurnal Ilmiah KORPUS JISAE (Journal of Indonesian Student Assesment and Evaluation) Jurnal Review Pendidikan dan Pengajaran (JRPP) Bahasa Indonesia Prima Jurnal Darma Agung jurnal dikdas bantara Journal La Multiapp LINEAR: Journal of Mathematics Education Journal of Education Research TRILOGI: Jurnal Ilmu Teknologi, Kesehatan, dan Humaniora Innovative: Journal Of Social Science Research LINGTERSA: Jurnal Linguistik, Terjemahan, Sastra Journal of Fisheries & Marine TRANSFORMATIKA: Jurnal Bahasa, Sastra, dan Pengajarannya Halal Studies and Society Mathematics Education Journal Journal on Mathematics Education Bambu Laut: Jurnal Pengabdian Masyarakat Warta Penelitian Perhubungan
Bambang Riyanto
Sekolah Teknik Elektro dan Informatika, Institut Teknologi Bandung Jalan Ganesha 10, Bandung 40132, Indonesia
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Public Health Social Sciences Transportation Other

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Effect of Different Papain Concentrations on Yield and Quality of Tuna Eye Oil Trilaksani, Wini; Nurhayati, Tati; Santoso, Joko; Riyanto, Bambang; Fauziah, Silva; Sinulingga, Fahri
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 2 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i2.57637

Abstract

Graphical Abstract Highlight Research Innovative Use of By-Products: The study explores the use of tuna eye by-products, a rich source of docosahexaenoic acid (DHA), to reduce reliance on imported fish oil and promote sustainable utilization of fishery waste. Enhanced Extraction Methodology: Enzymatic extraction using papain at optimal concentrations significantly improves the yield and quality of tuna eye oil, achieving up to six times higher yield compared to other methods. Nutritional and Quality Benefits: The extracted oil demonstrated low Index of Atherogenicity (IA) and Index of Thrombogenicity (IT), indicating its potential as a heart-healthy dietary supplement, with DHA and EPA concentrations well preserved. Environmental and Safety Advantages: The enzymatic process is solvent-free, minimizing environmental impact and ensuring consumer safety, while also addressing challenges posed by extended sample storage during the COVID-19 pandemic. Abstract Docosahexaenoic acid (DHA), a crucial omega-3 fatty acid, plays a vital role in neurodevelopment and cardiovascular health. Indonesia relies heavily on imported fish oil, despite its significant potential in underutilized by-products like tuna eyes. This study investigates the optimization of papain enzyme concentration for enzymatic extraction of DHA-rich oil from tuna eyes, aiming to enhance yield and maintain quality. Using 1% papain at 55°C for 1 hour, the optimized process achieved an oil yield of 8.59 ± 0.69%, six times higher than cold extraction without enzymes. The extracted oil exhibited high oxidative stability with low Index of Atherogenicity (IA: 0.38–0.40) and Index of Thrombogenicity (IT: 0.20–0.21), while DHA content remained well-preserved at 27.82%. This method also demonstrated the capability to maintain oil quality even after prolonged storage during the COVID-19 pandemic. Compared to conventional methods, enzymatic extraction provides a sustainable and efficient alternative by reducing chemical solvent use, minimizing environmental impact, and maximizing the utilization of fishery by-products. These findings offer a scalable solution for producing high-value omega-3 oils, contributing to global dietary needs and promoting sustainability in the fishery industry.
Developing a standard for authenticating halal gelatine catfish skin: A study on the effect of periodization quarantine (istihalah) on gelatin quality in catfish fed with pig-contaminated feeds Riyanto, Bambang; Wahjuningrum, Dinamella; Ramadhan, Wahyu; Al-Faruqi, Muhammad Umar
Halal Studies and Society Vol 1 No 1 (2024): January 2024
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/hass.1.1.20-23

Abstract

The search for sustainable feed alternatives has led to exploring unconventional sources, including food waste, amidst the growing demand for halal gelatin, which has created a significant need for fish skin by-products. Therefore, this study aimed to authenticate the halal status of catfish skin gelatin by verifying feed origin and determining the contents of pig contaminants. Halal standard was verified using a specific DNA analysis of pig components, conducted at each stage, including feed containing pig, fish skin, and catfish gelatin. Gelatin in catfish skin was predominantly composed of amino acids glycine and proline, and fish enlargement stage which led to a skin yield of 5.36 ± 0.75%. Furthermore, the yields of gelatin were 8.67%, 9.94%, and 9.19%, with gel strengths of 133.4 ± 1.2, 129.9 ± 1.4, and 121.9 ± 2.8 bloom, respectively, for the different quarantine periods. The characterization of gelatin using FTIR showed the presence of functional groups, such as amide A, I, II, and III. Real-time PCR detected the presence of pig DNA in feed but not in catfish skin or gelatin. In conclusion, a quarantine period of 0 days for catfish fed pig-containing feed was sufficient to cleanse catfish skin of pig contaminants, with no indication of pig DNA being found.
Prinsip Individual Alfred Adler Pada Tokoh dalam Novel Azzamine Karya Sophie Aulia: Kajian Psikologi Sastra Risti Ariska; Widayati, Dwi; Riyanto, Bambang
Innovative: Journal Of Social Science Research Vol. 4 No. 5 (2024): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v4i5.14851

Abstract

Psikologi sastra adalah bidang studi yang menggabungkan prinsip-prinsip psikologi dengan analisis sastra untuk memahami perilaku, motivasi, dan pikiran karakter dalam karya sastra. Ini melibatkan eksplorasi tentang bagaimana karya sastra memengaruhi pembaca dan bagaimana pemahaman psikologis dapat digunakan untuk menganalisis karakter, plot, dan tema dalam karya sastra. Penelitian ini bertujuan untuk mendeskripsikan prinsip individual pada tokoh dalam novel Azzamine karya Sophie Aulia dalam prinsip individual Alfred Adler. Teori yang digunakan pada penelitian ini yaitu Psikologi Sastra yang merujuk pada Psikologi Individual Alfred Adler. Untuk mengumpulkan data digunakan teknik membaca-mencatat dan analisis data menggunakan metode deskriptif analisis. Hasil penelitian menunjukkan bahwa para tokoh dalam novel Azzamine karya Sophie Aulia yang memiliki prinsip-prinsip individual yaitu prinsip superioritas, prinsip rendah diri, prinsip konsistensi diri, prinsip minat sosial, prinsip gaya hidup, dan prinsip diri kreatif.
Levi-Strauss's Myth Structuralism in the Novel Lontara by Windy Joana Alfila, Sinta; Widayati, Dwi; Riyanto, Bambang
Jurnal Bahasa Indonesia Prima (BIP) Vol. 7 No. 1 (2025): Bahasa Indonesia Prima (BIP)
Publisher : Bahasa Indonesia Prima

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34012/bip.v7i1.5993

Abstract

Myth can be defined as a story or culture of a community that contains religion and passes it on orally, which can influence people's lives. Morphology events relate to the origin of the universe, the first humans, gods, and other supernatural beings. This research discusses mythology as the study of mythical stories, which are often related to the lives of gods and spirits in people's cultures. One of the myths analyzed in this study is the myth of To Manurung in the novel Lontara by Windy Joana, which tells the story of a messenger of God for the Bugis Makassar community. This research aims to describe the myth structure in the novel Lontara through four levels proposed by Lévi-Strauss, namely geographical, economic, sociological, and cosmological levels. The method used in this research is descriptive qualitative. This research refers to Claude Lévi-Strauss' theory of myth structuralism, which identifies four levels in the myth structure, namely geographical, economic, sociological, and cosmological levels. The results of this study show that in the novel Lontara by Windy Joana, there are four levels of myth structure, namely: (1) Geographical Level, (2) Economic Level, (3) Sociological Level, and (4) Cosmological Level.
The Image of Women in the Main Character of the Novel Jais Darga Namaku by Ahda Imran: A Feminist Approach -, Nurseha; Ritonga, Parlaungan; Riyanto, Bambang
Jurnal Bahasa Indonesia Prima (BIP) Vol. 7 No. 1 (2025): Bahasa Indonesia Prima (BIP)
Publisher : Bahasa Indonesia Prima

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34012/bip.v7i1.6045

Abstract

Literary works are very influential in human life because they contain messages and lessons that can be taken for life. Novels are literary works with various themes, including social issues that generally occur in society, including those related to the image of women. This research aims to describe the image of women in the novel Jais Darga Namaku by Ahda Imran using a feminist approach with Sugihastuti's theory that focuses on two main aspects in the form of women's self-image and women's social image of the main character, Jais Darga. The data source in this research uses the novel Jais Darga Namaku by Ahda Imran, published by Gramedia in 2022. This research was conducted using a descriptive qualitative method. The data presented are words, phrases, sentences, or paragraphs that contain images of women. The data collection technique used document analysis by reading, recording, classifying, and describing. The results of the study can be concluded that the image of women in the novel Jais Darga Namaku by Ahda Imran includes (1) Women's self-image from the physical aspects of puberty, menstruation, pregnancy, childbirth, and psychological aspects that have humility, intelligence, independence, resilience, and self-confidence, and (2) The social image of women in the family through their role as independent and forgiving wives and mothers and the social image of women in society as successful women in the international art world.
Ultrapartikel tulang ikan kaya kalsium untuk peningkatan gel surimi pada pemanasan gelombang mikro: Calcium-rich fish bone ultraparticles for enhancing surimi gel strength under microwave heating Riyanto, Bambang; Ramadhan, Wahyu; Trilaksani, Wini; Isnaini, Cahyuning; Wulandari, Ayu Septi
Jurnal Pengolahan Hasil Perikanan Indonesia Vol. 27 No. 12 (2024): Jurnal Pengolahan Hasil Perikanan Indonesia 27(12)
Publisher : Department of Aquatic Product Technology IPB University in collaboration with Masyarakat Pengolahan Hasil Perikanan Indonesia (MPHPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17844/jphpi.v27i12.60145

Abstract

Produk berbasis surimi memerlukan kekuatan gel yang optimal untuk menghasilkan tekstur yang diinginkan. Penelitian ini bertujuan untuk menentukan konsentrasi terbaik ultrapartikel tulang ikan kaya kalsium (UpTIK) pada surimi ikan kurisi berdasarkan kekuatan gel surimi dan aktivitas TGase endogen pada pemanasan gelombang mikro. UpTIK diperoleh melalui kalsinasi dan nano milling, yang menghasilkan komposisi kalsium yang tinggi. Aktivasi TGase endogen dilakukan dengan variasi konsentrasi UpTIK (0; 0,5; 1; dan 2%) pada surimi dengan pemanasan gelombang mikro. Parameter yang dianalisis meliputi aktivitas ekstrak enzim TGase endogen, analisis warna L*a*b* dan derajat putih, daya ikat air (water holding capacity, WHC), protein larut garam (PLG), dan kekuatan gel. Hasil penelitian menunjukkan bahwa konsentrasi 1% UpTIK memberikan aktivitas TGase tertinggi (0,47±0,05 U/mL) dan kekuatan gel terbaik (647,17 g/cm²). Penambahan UpTIK juga meningkatkan daya ikat air dan protein larut garam tanpa memengaruhi derajat putih surimi. Waktu pemanasan gelombang mikro meningkatkan efisiensi hingga tiga kali lebih cepat dari pemanasan konvensional. Penelitian ini menawarkan inovasi pemanfaatan UpTIK untuk mengaktivasi TGase endogen pada pemanasan gelombang mikro sehingga memberikan potensi diversifikasi baru produk surimi berbasis perikanan tropis.
Bridging mathematics and communication: Implementing realistic mathematics education principles for skill development Siswantari; Sabon, Simon Sili; Listiawati, Nur; Wirda, Yendri; Zulkardi; Riyanto, Bambang
Journal on Mathematics Education Vol. 16 No. 2 (2025): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.v16i2.pp729-752

Abstract

Effective mathematical communication is essential for developing conceptual understanding and applying mathematics in real-life contexts. However, empirical studies consistently report that students' mathematical communication skills remain insufficiently developed, highlighting a critical gap in instructional practices that effectively foster these competencies. The Realistic Mathematics Education (RME) approach, grounded in six core principles—reality, levels, intertwinement, activity, interactivity, and guidance—has demonstrated promise in promoting meaningful and contextualized learning. Yet, there is limited empirical research that systematically investigates how these principles specifically support the enhancement of students’ mathematical communication. This study addresses that gap by examining how the application of RME principles contributes to the development of communication skills in junior high school mathematics classrooms. Utilizing a qualitative research design, data were gathered from nine schools across three districts through focus group discussions, lesson plan analysis, and classroom observations. Participants included RME experts, education policymakers, school principals, and mathematics teachers. Thematic analysis was conducted to identify how the six RME principles are operationalized in practice and how they align with indicators of students’ mathematical communication. The findings reveal that each principle plays a distinct yet interconnected role in supporting communication—particularly through meaningful contexts, dialogic interactions, and structured teacher guidance. The study offers empirical support for the broader adoption of RME and highlights its potential to increase teacher motivation and instructional quality. It further underscores the importance of sustained professional development—such as mentoring and lesson study—in enhancing teachers' capacity to implement RME effectively. Future research should focus on developing RME-based instructional materials and digital tools, including GeoGebra-integrated worksheets and context-rich problem sets, to amplify its impact within mathematics education in Indonesia.
REPRESENTASI BUDAYA DALAM LEGENDA AEK SIPITU DAI DI SAMOSIR: KAJIAN ANTROPOLOGI SASTRA Hutapea, Dewi Feronika; Harahap, Nurhayati; Riyanto, Bambang
Jurnal Review Pendidikan dan Pengajaran Vol. 8 No. 3 (2025): Volume 8 No. 3 Tahun 2025
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jrpp.v8i3.52885

Abstract

Sastra adalah ungkapan manusia secara pribadi tentang pengalaman ataupun pemikiran yang dibuat ke dalam suatu karya yang bisa saja berupa lisan ataupun tulisan. Legenda merupakan salah satu bentuk sastra lisan yang mencerminkan nilai-nilai budaya lokal. Penelitian ini bertujuan untuk mengungkap representasi kebudayaan yang terkandung dalam legenda Aek Sipitu Dai di Samosir, Sumatera Utara, serta bagaimana legenda tersebut mencerminkan sistem nilai dan identitas budaya masyarakat Batak Toba. Penelitian menggunakan pendekatan antropologi sastra dengan teori tiga wujud kebudayaan dari Koentjaraningrat, yaitu kebudayaan sebagai ide, aktivitas, dan artefak. Hasil penelitian menunjukkan bahwa legenda Aek Sipitu Dai tidak hanya berperan sebagai warisan lisan atau hiburan semata, tetapi juga sebagai media pewarisan nilai-nilai budaya yang bersifat sakral, sosial, dan historis. Representasi kebudayaan sebagai ide tercermin dalam keyakinan masyarakat terhadap kesakralan sumber mata air Aek Sipitu Dai dan hubungannya dengan leluhur serta sistem Dalihan Na Tolu. Representasi sebagai aktivitas tampak dalam pelaksanaan ritual adat seperti marpangir, penyambutan tamu dengan tortor, serta tradisi sehari-hari yang masih dilestarikan. Sementara itu, representasi sebagai artefak tercermin melalui keberadaan Pancuran Tujuh Rasa, Batu Paranggir- anggiran, Gorga Batak, dan lukisan batu Parhutuan yang mengandung nilai filosofis dan simbolik. Keseluruhan temuan ini menegaskan bahwa legenda Aek Sipitu Dai memiliki peran penting dalam membentuk dan mempertahankan konstruksi budaya masyarakat Batak secara turun-temurun, sekaligus menjadi bagian inti dalam pelestarian warisan budaya lokal.
Developing Mathematical Modeling Tasks Using Parking Fee for Learning Mathematics Riyanto, Bambang
Journal of Mathematics and Mathematics Education Vol 11, No 2 (2021): Journal of Mathematics and Mathematics Education (JMME)
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jmme.v11i2.57971

Abstract

The purpose of this study is to produce valid mathematical modeling tasks using parking fees for learning mathematical modeling in SMK. This study used a research development approach by Akker, Gravemeijer, McKenney and Nieveen. This research consists of 3 stages, namely analysis, design and evaluation. The analysis step was carried out by analyzing students, curriculum, vocational needs, context needed and mathematical modeling. The second step is design and product. The last step is a formative evaluation design which consists of self-evaluation, one-to-one, expert review, small group, and field test. The research only conducted self-evaluation, one-to-one, and expert review. Data analysis used descriptive walk through, expert commentary analysis, solution analysis and student comments to get a valid parking fee context mathematical modeling problem for learning mathematics. This research has produced mathematical modeling problems valid using the context of parking fees for mathematics learning in SMK. The results of this study suggest that it is important for teachers to design and implement mathematical modeling problems using interesting and meaningful real-world contexts in learning mathematics, further research is important to provide scaffolding for students in mathematical modeling problems for mathematics learning, finally, research and learning mathematical modeling crucial to be applied in the future.
Co-Authors -, Nurseha A.A. Ketut Agung Cahyawan W Agung Budiwirawan Agus Taufik Mulyono Ahmad Harisb januar Syahidan, Ahmad Harisb januar Al-Faruqi, Muhammad Umar Alfa Narendra Alfila, Sinta Amelia Kusuma Indriastuti Ani Setiarini Arafah, Purnama Arivai Santosae, Zacky Astri Purnama Dewi Azhar Hermawan Riyanto, Azhar Hermawan Bagus Hario Setiadji Bambang Haryadi Bambang Pudjianto Bambang Susantono Cahyuning Isnaini, Cahyuning Danang Parikesit Darmawijoyo, Darmawijoyo Dendy Wicaksono Dianita Ratna Kusumastuti Dinamella Wahjuningrum Doni Ramadhan, Doni Dwi Widayati, Dwi Elisati Hulu Fauziah, Silva Ferry Hermawan Fitria, Hadaya Gugup Kismono Hidayati, Aulia Hinggo S, Hichmaed Tachta Hutapea, Dewi Feronika Indah, Febriamitha Indrasurya Budisatrya Mochtar Ismiyati Ismiyati Jogiyanto Hartono Joko Santoso Joko Siswanto Juang Akbardin Kami Hari Basuki Kami Hari Basuki Kustiariyah Tarman Marsella, Emma Masrianto Masrianto Mudjiastuti Handajani Muhammad Amin Cakrawijaya Mustafid Mustafid Mustika Mahamarendra Mutik Sirait, Raisyicha Naibaho, Margareta Desnawati Nanda Dwi Astri Novita, Winda Duwi Nur Listiawati, Nur Nurhayati Harahap Nuroji Nuroji Poernomosidhi Poerwo Pratiwi, Ghina Eka Prestika Fiprilia Medawati Rakhmatika, Rakhmatika Ramadan Ramadan Ratu Ilma Indra Putri Reza Maulana Ria Asih Ariyani Soemitro Risti Ariska Ritonga, Parlaungan Rizky Akbar Fathurochman Rusdy A. Siroj S, Marsel Saulina Santosae, Zacky Arivai Simon Sili Sabon, Simon Sili Sinulingga, Fahri Sirait, Raisyicha Mutik Siswantari Soegiono Soetomo Sri Widyantoro, Sri Subijanto Sugeng Heri Suseno Syafrudin Syafrudin TATI NURHAYATI Tiftazani, M. Haekal Trilaksini, Wini Wahyu Ramadhan Wardhana A.S, Wisnu Wibowo, Slamet Widiarsyah, Farel Wini - Trilaksani Wirda, Yendri Wulandari, Ayu Septi Y I Wicaksono YI. Wicaksono Zulkardi Zulkardi Zulkardi