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All Journal Environmental Pollution Journal Journal of Marine Resources and Coastal Management
Ramadhanu, Rizky Akbar
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Engineering Environmental Science Law, Crime, Criminology & Criminal Justice

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Potential utilization of fish waste as the glue from Kawakawa (Euthynnus affinis) scales, skin, and bones Christiananda; Ardiansyah, Mohammad Bagus Rizan; Samudra, Muhammad Farhan Satya Bintang; Ramadhanu, Rizky Akbar
Journal of Marine Resources and Coastal Management Vol. 5 No. 1 (2024)
Publisher : UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/mrcm.v5i1.2093

Abstract

Waste from fish scales, skin and bones in the fishing industry are currently only used as fish meal or handicrafts. Fish waste is very abundant, especially in fish that are widely consumed by the public, such as little tuna or Kawakawa (Euthynnus affinis). Therefore, innovations are needed in processing fish scales, skin and bones waste, namely as ingredients in making fish glue. Fish glue is an adhesive resulting from the extraction of fish scales, skin and bones which contains collagen, which can be hydrolyzed in hot water and dilute acid to form fish glue. The aim of this research is to determine the effect of using fish skin, scales and bone waste materials on the results of glue products. The research method is by extracting bones, scales, and skin of Kawakawa using 5% CH3COOH solution in a ratio of 1: 1, then filtered to obtain fish glue. This study used two treatments: the use of raw materials of bones, scales, and fish skin (Sample-1) and fish skin and scales only (Sample-2). The results of research showed that Sample-2 showed a higher total rendement or yield than Sample-1. In addition, Sample-2 has a more intense color than Sample-1. It is necessary to demineralize the raw materials (fish waste) to increase the results of collagen extraction.
Cemaran Mikroplastik Pada Lapisan Atas Kulit Batang Avicennia marina di Kawasan Ekosistem Mangrove Wonorejo Surabaya Nisa, Maulidiana Zahrotun; Ramadhanu, Rizky Akbar
Environmental Pollution Journal Vol. 5 No. 1: April 2025
Publisher : ECOTON: Ecological Observation and Wetlands Conservation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58954/epj.v5i1.212

Abstract

Ekosistem mangrove merupakan ekosistem yang rentan oleh berbagai polutan yang masuk ke dalam lingkungan. Plastik adalah salah satu bahan yang paling banyak mencemari mangrove, dengan kontribusi sekitar 70% dari total sampah laut. Penelitian bertujuan untuk mengetahui karakteristik dan kelimpahan mikroplastik di udara dan lapisan atas kulit batang mangrove Avicennia marina di kawasan ekosistem mangrove Wonorejo Surabaya. Lokasi penelitian ditentukan menggunakan metode purposive sampling serta menganalisis sampel menggunakan aquades dan campuran pelarut H2O2 30%. Hasil dari penelitian menunjukan kelimpahan mikroplastik tertinggi pada sampel udara yaitu pada stasiun 1 didominasi jenis fragmen dengan warna cokelat dan kelimpahan mikroplastik tertinggi pada sampel kulit batang mangrove yaitu pada stasiun 1 dengan jenis dan warna yang mendominasi adalah fiber dan hitam pada stasiun 2. Sedangkan, hasil pengambilan data arah dan kecepatan angin diperoleh dari dua arah yaitu barat dan timur. Diharapkan perlu adanya langkah mitigasi efektif dan kebijakan perlindungan ekosistem mangrove dari polusi plastik.
Structure of reef fish communities in Gili Noko Island waters, East Java, Indonesia Ramadhanu, Rizky Akbar; Nugraha, Dimas Rizal Wahyu
Journal of Marine Resources and Coastal Management Vol. 6 No. 1 (2025)
Publisher : UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/mrcm.v6i1.2298

Abstract

The coral reef ecosystems around Gili Noko Island, Bawean, Indonesia serve as one of the main sources of livelihood for the local community and provide essential habitat for various marine biota, particularly reef fish. This study aimed to assess the structure of the reef fish community in the area. The research was conducted from April to June 2024 using the Underwater Visual Census (UVC) method. The results recorded the presence of seven reef fish families: Acanthuridae, Apogonidae, Balistidae, Caesionidae, Chaetodontidae, Ephippidae, and Scaridae. The fish abundance index across all station points ranged from 1.50 ind/m² to 1.65 ind/m², indicating a relatively high abundance. The reef fish diversity index (H') at all stations was categorized as high, the evenness index (E) also fell within the high category, while the dominance index (D) was categorized as low. These findings suggest that the reef fish community structure in the waters around Gili Noko Island is both diverse and evenly distributed, with no single species dominating the ecosystem.
Co-Authors Ardiansyah, Mohammad Bagus Rizan Christiananda Nisa, Maulidiana Zahrotun Nugraha, Dimas Rizal Wahyu Samudra, Muhammad Farhan Satya Bintang