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All Journal HAYATI Journal of Biosciences Biospecies Farmaka Aquacoastmarine Jurnal Teknik ITS Jurnal Perikanan dan Kelautan Jurnal Farmasi Klinik Indonesia Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Pharmauho: Jurnal Farmasi, Sains, dan Kesehatan Omni-Akuatika OLDI (Oseanologi dan Limnologi di Indonesia) Indonesian Journal of Agricultural Research Pharmacology and Clinical Pharmacy Research PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat JFIOnline JURNAL FARMASI GALENIKA Jurnal Riset Kefarmasian Indonesia Journal of Electrical Engineering and Computer (JEECOM) Jurnal Agriment TIERS Information Technology Journal Journal of Artificial Intelligence and Digital Business Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan AQUACOASTMARINE: Journal of Aquatic & Fisheries Sciences Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Retensi Akiratech Gotong Royong Jurnal Farmasi Galenika Jurnal Indonesia Mengabdi
Ahmad Muhtadi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Veterinary Other

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A review of the enzymes utilization in the feed for indigenous Indonesian fish : enzymes utilization in the feed for indigenous Indonesian fish Maser, Wahyu Haryati; Muhtadi, Ahmad; Ritonga, Ajuan; Almira, Della; Panjaitan, Febriyanti; Sari, Nurmala; Sinurat, Ries Ruth Rytond; Kembaren, Natasyha Pebrina Br Sembiring; Purba, Theresia Widi Astuti; Nababan, David; Andari, Ella; Harahap, Muhamad Haikal Firyaldi; Pasaribu, Rihan Addilah
AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences Vol. 4 No. 1 (2025): AQUACOSTMARINE: Journal of Aquatic and Fisheries Sciences
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jafs.v4i1.20246

Abstract

Enzymes play a vital role in improving nutrient absorption and digestion efficiency in fish feed, particularly for indigenous Indonesian fish species. This review aimed to comprehensively evaluate the current state of enzyme utilization in feed for native Indonesian fish, highlighting its benefits, challenges, and potential contributions to the advancement of sustainable aquaculture. It examined the role of endogenous enzymes and various exogenous enzymes, such as protease, lipase, phytase, Non-Starch Polysaccharides (NSP) enzymes, and multi-carbohydrase complexes, in enhancing feed efficiency and fish growth. The integration of these enzymes into feed formulations offers significant advantages in boosting growth performance, optimizing feed conversion efficiency, and promoting environmental sustainability. Additionally, this review discussed the potential benefits and challenges associated with enzyme application in fish feed. Looking ahead, the development of enzyme utilization in aquafeed holds great promise for enhancing the sustainability, efficiency, and productivity of the aquaculture sector. This review provides valuable insights into the potential of enzyme supplementation to maximize feed utilization for native Indonesian fish species, outlining both its advantages and challenges, while also exploring its future prospects in driving cost-effective and eco-friendly aquaculture practices.
A review of the enzymes utilization in the feed for indigenous Indonesian fish : enzymes utilization in the feed for indigenous Indonesian fish Maser, Wahyu Haryati; Muhtadi, Ahmad; Ritonga, Ajuan; Almira, Della; Panjaitan, Febriyanti; Sari, Nurmala; Sinurat, Ries Ruth Rytond; Kembaren, Natasyha Pebrina Br Sembiring; Purba, Theresia Widi Astuti; Nababan, David; Andari, Ella; Harahap, Muhamad Haikal Firyaldi; Pasaribu, Rihan Addilah
AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences Vol. 4 No. 1 (2025): AQUACOSTMARINE: Journal of Aquatic and Fisheries Sciences
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jafs.v4i1.20246

Abstract

Enzymes play a vital role in improving nutrient absorption and digestion efficiency in fish feed, particularly for indigenous Indonesian fish species. This review aimed to comprehensively evaluate the current state of enzyme utilization in feed for native Indonesian fish, highlighting its benefits, challenges, and potential contributions to the advancement of sustainable aquaculture. It examined the role of endogenous enzymes and various exogenous enzymes, such as protease, lipase, phytase, Non-Starch Polysaccharides (NSP) enzymes, and multi-carbohydrase complexes, in enhancing feed efficiency and fish growth. The integration of these enzymes into feed formulations offers significant advantages in boosting growth performance, optimizing feed conversion efficiency, and promoting environmental sustainability. Additionally, this review discussed the potential benefits and challenges associated with enzyme application in fish feed. Looking ahead, the development of enzyme utilization in aquafeed holds great promise for enhancing the sustainability, efficiency, and productivity of the aquaculture sector. This review provides valuable insights into the potential of enzyme supplementation to maximize feed utilization for native Indonesian fish species, outlining both its advantages and challenges, while also exploring its future prospects in driving cost-effective and eco-friendly aquaculture practices.
UJI ANTIDIABETES FRAKSI AIR, ETIL ASETAT DAN n-HEKSAN BUAH MENGKUDU (Morinda citrifolia L.) PADA TIKUS PUTIH METODE INDUKSI ALOKSAN Musfiroh, Ida; Asy Syifa, Khadijah; Muhtadi, Ahmad
JURNAL FARMASI GALENIKA Vol 7 No 2 (2020): Jurnal Farmasi Galenika Volume 7 No. 2
Publisher : Universitas Bhakti Kencana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70410/jfg.v7i2.179

Abstract

Mengkudu (Morinda citrifolia L.) adalah salah satu tanaman obat yang dilaporkan memiliki aktivitas antidiabetes. Penelitian ini bertujuan untuk mengetahui aktivitas antidiabetes fraksi air, etil asetat dan n-heksan buah mengkudu (Morinda citrifolia L.) pada tikus putih dengan menggunakan metode induksi aloksan dan untuk mengetahui fraksi yang memberikan aktivitas penurunan kadar glukosa darah paling baik. Metode penelitian meliputi: ekstraksi simplisia buah mengkudu dengan pelarut etanol 96% kemudian dilakukan fraksinasi dengan metode Ekstraksi Cair-Cair (ECC), uji aktivitas antidiabetes fraksi air, etil asetat dan ­n-heksan ekstrak etanol buah mengkudu dosis 1,2 g/kg BB pada tikus diabetes. Hasil pengujian dengan analisis statistik dengan tingkat kepercayaan 95% menunjukkan pemberian fraksi air, etil asetat dan ­n-heksan ekstrak etanol buah mengkudu memberikan aktivitas penurunan kadar glukosa darah yang signifikan jika dibandingkan dengan kontrol negatif. Pada hari ke-5 perlakuan fraksi ­n-heksan ekstrak etanol buah mengkudu memberikan penurunan kadar glukosa darah paling baik yaitu sebesar 71,99% bila dibandingkan dengan dengan penurunan kadar glukosa darah fraksi air dan etil asetat terhadap kontrol negatif.
Water Quality Degradation in the Deli River Watershed, North Sumatra: Impacts of Land Use and Pollution Sources Leidonald, Rusdi; Muhtadi, Ahmad; Ashshiddiq, Muhammad Arif; Siahaan, Vania S.P; Manurung, Bunga Ulita
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 15 No 4 (2025): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.15.4.669

Abstract

Daerah Aliran Sungai Deli berperan penting dalam siklus hidrologi bagi di wilayah Medan dan sekitarnya. DAS Deli merupakan sumber air bersih untuk kota Medan. penelitian ini dilakukan dengan tujuan untuk mendeskripsikan kondisi kualitas air dan melaporkan statu mutu perairan secara spasial di DAS Deli. Waktu pengambilan sampel air Sungai Deli dilakukan pada bulan Juni-Juli tahun 2023 di Daerah Aliran Sungai Deli, Provinsi Sumatera Utara. Titik lokasi pengamatan dilakukan secara purposive sampling pada 46 titik yang berbeda secara spasial. Lokasi pengamatan tersebut mewakili bagian hilir (5 titik), tengah (16 titik), hulu (10 titik), dan termasuk anak-anak sungainya (15 titik). Penentuan status pencemaran DAS Deli menggunakan metode Indeks Pencemaran, National Sanitation Foundation-Water Quality Index (NSF-WQI), Canadian Council of Minister of The Environment (CCME), dan metode Singscore. Secara umum DAS Deli dicirikan dengan substrat pasir-kerikil dari hilir hingga hulu (Sub DAS Petane, Babura, dan Bekala) dan hanya sedikit yang bersubstrat berbatu di bagian hulu Sungai Sembahe di Sibolangit. Hal inilah yang menyebabkan DAS Deli secara umum terlihat keruh karena substrat mengalami pengadukan sehingga tingkat kekeruhan menjadi lebih tinggi. Kekeruhan di Sungai Deli mencapai 6.6 NTU hingga 78.3 NTU. Perairan yang selalu jernih hanya ditemukan pada substrat berbatu di bagian tengah sub DAS petane dan hulu sungai Sembahe. Berdasarkan hasil perhitungan dari berbagai indeks kualitas air dan metode bioindicator menunjukkan bahwa secara spasial kondisi perairan di DAS Deli bervariasi mulai dari kondisi yang buruk hingga baik/sangat baik. Kondisi sungai paling buruk terdapat pada bagian hilir di sub DAS Sei Sekambing dan Sub DAS Deli dengan status perairan yang tercemar sedang hingga buruk. Status perairan yang baik ditemukan pada bagian hulu sungai Sembahe
Penerapan Keselamatan Konstruksi pada Mahasiswa Teknik Sipil Politeknik Negeri Pontianak Muhtadi, Ahmad
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 3 (2025): Agustus - October
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i3.2430

Abstract

Keselamatan konstruksi sangat penting untuk proyek konstruksi, pelanggaran standar keselamatan masih sering terjadi di Indonesia, terutama pada proyek kecil dan menengah. Tujuan dari penelitian ini adalah untuk mengevaluasi bagaimana mahasiswa Teknik Sipil Politeknik Negeri Pontianak (POLNEP) menerapkan keselamatan konstruksi selama praktik kerja lapangan (PKL). Dalam penelitian ini, pendekatan deskriptif digunakan. Populasi penelitian terdiri dari 132 siswa semester V dari Program D3 Teknik Sipil pada tahun 2023, dan sampel penelitian berjumlah 57 orang. Data dikumpulkan melalui kuesioner tertutup dan dianalisis menggunakan pendekatan deskriptif kuantitatif. Hasil penelitian menunjukkan bahwa implementasi keselamatan konstruksi secara umum berada dalam kategori "Baik", dengan pemahaman tentang keselamatan konstruksi (87,94%), penggunaan alat pelindung diri (85,75%), kepatuhan terhadap prosedur keselamatan (87,17%), pengawasan dan fasilitas keselamatan (88,45%), dan penanganan kecelakaan dan risiko (82,01%). Tetapi ada beberapa masalah yang ditemukan, seperti kurangnya budaya untuk melaporkan risiko, kualitas alat pelindung diri yang buruk, dan kurangnya simulasi tanggap darurat. Keselamatan konstruksi telah diterapkan dengan baik, ada peluang untuk meningkatkan pelatihan tanggap darurat, fasilitas keselamatan, dan penggabungan studi kasus ke dalam Project Base Learning (PBL). Diharapkan penelitian ini akan membantu memperbaiki kurikulum pendidikan vokasi di POLNEP untuk meningkatkan budaya keselamatan konstruksi pada mahasiswa.
The Effect of Tides on Plankton Communities in the Belawan River Estuary, North Sumatra Leidonald, Rusdi; Muhtadi, Ahmad; Harahap, Cici Maulidiah; Mukra, Rizal; Ishak, Mohd Yusoff; Hasani, Qadar
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.114-128

Abstract

The Belawan Estuary is a highly important economic and logistics hub in Sumatra, serving as the primary maritime transportation route in western Indonesia. This estuary is also utilized for multiple purposes, including industrial activity, residential areas, and fisheries. These activities inevitably influence water quality, which in turn affects the presence and population dynamics of plankton in the estuary. This study aimed to examine the spatial and temporal distribution of plankton communities in the Belawan Estuary. Observation points were selected from eight locations representing different activities and regions, including areas near the sea, the middle section, and areas close to land. Plankton samples were collected during high and low tides following the tidal cycle (new moon, first quarter, full moon, and last quarter). Principal component analysis was performed to determine the influence of tidal cycles on plankton composition and abundance in the estuary. A total of 64 plankton genera from 16 classes were identified in the estuary. spatially, the highest abundance was recorded in the mouth estuary during low tide. Temporally, the highest plankton abundance across stations was during the first quarter phase at low tide. These findings indicate that tidal cycles significantly influence plankton abundance in the Belawan Estuary. This phenomenon is attributed to the tidal currents that transport nutrients from the lower layers to the surface waters during both high and low tides. Changes in plankton abundance and species composition can serve as indicators of water fertility in this region and reflect the impacts of changes in environmental conditions.
Co-Authors Abbas Alfuti , Abil Adenia Constansia Sitepu Adil Junaidi Ahmad Rizki Ahyar Pulungan Aji, Egi Setia Ajuan Ritonga Almira, Della Ami Tjitraresmi, Ami Amirah Amirah Andari, Ella Anggita Della Lestari Ani Rahmawati Ashshiddiq, Muhammad Arif Asmadi asmadi Asy Syifa, Khadijah baihaki, imam Berliana, Melisa Intan Binti Nur Asiyah BUDI UTOMO Citra Pangestu D. Ariska Dani Sumaryadi Darma Bakti Daulay, Achmad T. Dede Yuanda Desrita Desrita Desy Ariska Desyandri Desyandri Dewinta, Astrid Fauzia Dinarta Hutabarat Dwi Prasetyo DWI SURYANTO Eli Halimah, Eli Emma Surahman, Emma Entris Sutisna, Entris Eri Yusni Eulis Safina Eva Feriadi Eva Lia Risky Sinaga F. F. Rais Fadhilah, Amanatul Fahmi Fadhli Rais Febriyanti Panjaitan Fuad Hasan Gatera, Vesara A. Hafiyyan, Qalbi Harahap, Cici Maulidiah Harahap, Muhamad Haikal Firyaldi Herdaningsih, Sulastri Herdaningsih, Sulastri Herdaningsih, Sulastri Hesti Wahyuningsih Hidayati, Tita Kosima I Gusti Ngurah Antaryama Ida Musfiroh, Ida ikhwan Arief Purnama Imam Baihaqi IMROATUL CHUSNIAH Indah Anjar Resky Irene anggraini Irvanul Arifin, Mohammad Ishak, Mohd Yusoff Isten Sweno Tamba Jamiyanti, Eva Jannah, Sutra Wardatul Junaidy, Adil Kadarwan Soewradi KANIA NABILA FAJRIANTI Kartasasmita, Rahmana E Kartasasmita, Rahmana E Kembaren, Natasyha Pebrina Br Sembiring Keri Lestari Khairunnisa Kurlillah, Rizki Manullang, Kristina Natalia Manurung, Bunga Ulita Marufi, M. Marwan, Abang Maser, Wahyu Haryati Melisa Intan Barliana, Melisa Intan Mey Susanti Miftahul Jannah Miswar Budi Mulya Moelyono Moektiwardoyo Mohammad Basyuni Muammar Muammar Muhammad Ma’rufi Muhammad Reza Cordova, Muhammad Reza N. Azmi Nababan, David NADYA INDAH DEWANTI, NADYA INDAH Nanda Putri Nazara, Wilman Nurmala Sari Nurmatias Nurmatias Nursyamsiah, Tresna Nursyamsiah, Tresna NURUL ANNISA Nurul Azmi Orbita R. Dhuha Pardamean Lubis Pasaribu, Rihan Addilah Patihul Husni Perangin Angin, Imanuel Kemenangenta Perwira, Anggun Putri Pesta Saulina Sitohang Pindi Patana Pratiwi Pratiwi Priyogo, Prengki Pulungan, Ahyar Punomo, Punomo Purba, Theresia Widi Astuti Putri Churnia Arifin Qadar Hasani Rabihati, Etty Rambe, Ade Septiya Jumiani Randy Setiawan, Randy Raswin Nasution Rendra Setiawan, Gusti Ridwan, M. Deny Rifqi Rama Dhani Rizal Mukra Rizal Rizal Rizki Eka Putra Rizki Ridoan Rizki, A. Rosanti, Indah Rudolf Y. Ompusunggu Rusdi Leidonald Ryanti, Eva Sabilah Fi Ramadhani Sandy, Sarah D. Sarah Diba Sandy sarpawi sarpawi Sasongko, Hartanto Wahyu SHAFIRA SHAFIRA Sholih, Mally G. Siahaan, Vania S.P Silaban, Matthew Federich Willyam Simaremare, Elisabet Rosevenny Sinurat, Ries Ruth Rytond Siregar, Rizky Febriansyah Siregar, Zufriwandi Siti Abnur Kamala SITI NURUL KHOTIMAH Siti Saidah SITI SAIDAH Slamet Ibrahim Sri Hartini Suria Masriani Sinaga Syafriadi Syafriadi Taryono, Taryono TIJANIYAH TIJANIYAH, TIJANIYAH Toibullah Siregar Triwilaswandio Wuruk Pribadi Utomo, Satriyo Vina Maratus Salsabila Wardatul Jannah, Sutra Winarni, Rina Yasmiwar Susilawati Yunasfi Djayus yunasfi yunasfi Yunasfi Yunasfi Yunasfi, Yunasfi Zefri Ade Gurukinayan Zufriwandi Siregar Zulham Apandy Harahap Zulham Apandy Harahap