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Heavy Metal Bioaccumulation in Seagrass and Sargassum Across Indonesian Coastal Waters: Ecological Risks and Implications for Sustainable Coastal Management: A Systematic Review Nur Cholis; Gemala Madumetha; Kusuma Wijaya; Lily Viruly; Nancy Willian
Jurnal Zarah Vol. 14 No. 1 (2026): April, 2026
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/zarah.v14i1.8216

Abstract

Heavy metal contamination poses a significant threat to Indonesian coastal ecosystems, particularly seagrass meadows and brown seaweeds such as Sargassum, which function as primary producers and environmental bioindicators. This study systematically reviews heavy metal accumulation in seagrass and Sargassum in Indonesian waters and examines its ecological and management implications. A systematic literature review was conducted following the PRISMA 2020 framework, covering studies published between 2016 and 2025 from Scopus, ScienceDirect, Web of Science, Google Scholar, and Garuda. Articles were included if they reported empirical data on heavy metal contamination in seagrass or Sargassum in Indonesia. After screening and quality assessment, 20 studies were selected for thematic synthesis. The results show that lead (Pb) and cadmium (Cd) were the most frequently reported metals exceeding quality standards, identified in 14 of 20 studies. Mercury (Hg) was detected at several sites, while nickel (Ni) and iron (Fe) were mainly associated with mining areas. Higher accumulation was observed in seagrass leaves and Sargassum thalli, particularly in areas influenced by ports, industry, tourism, settlements, and mining. These findings indicate potential ecological risks, including reduced primary productivity and trophic transfer. Overall, seagrass and Sargassum demonstrate strong potential as biomonitors of heavy metal contamination in Indonesian coastal waters.
Bioconversion of Hospitality Food Waste Using Hermetia illucens Larvae: Effects of Food Waste Loading Rate and Larval Density on Waste Reduction and Biomass Production Safikalianty, Bella; Lestari, Febrianti; Viruly, Lily
TERNAK TROPIKA Journal of Tropical Animal Production Vol. 27 No. 1 (2026): TERNAK TROPIKA Journal of Tropical Animal Production
Publisher : Jurusan Produksi Ternak, Fakultas Peternakan, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtapro.2026.027.01.4

Abstract

Hospitality food waste constitutes a major fraction of organic waste generated by the hospitality sector and poses significant environmental challenges if not properly managed. This study evaluated the effectiveness of bioconversion of hospitality food waste using Hermetia illucens larvae in reducing organic waste and producing larval biomass, while also assessing the nutritional characteristics of bioconversion products. The experiment employed a completely randomized design with two factors, namely food waste loading rate (50, 200, and 400 g) and larval density (1, 4, and 8 g), resulting in nine treatment combinations. Bioconversion performance was evaluated based on organic waste reduction efficiency, larval biomass production, and kasgot formation. Proximate analysis was conducted at the end of the experiment using composite samples obtained from treatments with optimal bioconversion performance. Data were analyzed using two-way analysis of variance (ANOVA). The results showed that Hermetia illucens-based bioconversion effectively reduced hospitality food waste, achieving a maximum waste reduction efficiency of 93.66%. Higher substrate loading combined with lower larval density resulted in improved waste reduction efficiency and larval biomass production. Proximate analysis of the composite sample (duplicate analysis) indicated a protein content of 31.23%, total fat content of 39.65%, ash content of 14.31%, carbohydrate content of 11.20%, and a total caloric value of 526.64 kcal/100 g, demonstrating that nutritionally rich bioconversion products were generated under optimal treatment conditions. These findings indicate that Hermetia illucens-based bioconversion is an effective and sustainable approach for hospitality food waste management, capable of reducing organic waste while producing nutritionally valuable larval biomass.
Pemberdayaan Masyarakat Desa Pangkil melalui Inovasi Brownies Fortifikasi Tepung Ikan Rucah untuk Peningkatan Nilai Tambah Benny Manullang; Cindytia Prastari; Aidil Fadli Ilhamdy; Anggrei Viona Seulalae; Jumsurizal Jumsurizal; R Marwita Sari Putri; R Fathul Rahman; Sri Novalina Amrizal; Lily Viruly; Yulia Oktavia; Azwin Apriandi; Sedianto Harefa; Faiz Maulana Darmawan; Muhammad Ja’far Armandaris; Syarifah Aida Fitri; Istiqhomah Istiqhomah
PRIMA: Journal of Community Empowering and Services Vol 10, No 1 (2026): June
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/prima.v10i1.115038

Abstract

Empowering The Pangkil Village Community Through Innovation of Fortified Brownies Made from By-catch Fish Flour. Pangkil Village, Teluk Bintan District is one of the small islands in the Riau Islands Province that has abundant fishery potential, including bycatch fish, but has not been optimally utilized. Bycatch fish have great potential as cheap and highly nutritious fortified food ingredients in the form of fish meal. This activity aims to improve the knowledge and skills of the Pangkil Village community in processing bycatch fish into innovative products in the form of bycatch fish meal fortified fudgy brownies and to increase the added value of local fishery products. The methods used included socialization, training in making bycatch fish meal-fortified fudgy brownies, organoleptic testing, and activity evaluation. The preparation of fudgy brownies is divided into three parts: preparation of chocolate dough, egg dough, and addition of wheat flour and bycatch fish meal. The resulting fudgy brownies had a whole appearance, a slightly dense texture from the outside but soft inside, chocolate aroma, sweet taste, and brown color. The results of the organoleptic test showed that the panelists liked the bycatch fish meal fortified fudgy brownies in all sensory attributes. The questionnaire analysis results showed that the average training achievement score was 4.42, which fell into the "agree-strongly agree" category. This value indicates that the training activities were effective and well received by the participants. The results of the activity benefit test showed that p>0.05. This indicates that the benefits of the training were felt equally by all participants, both experienced and beginner. These findings indicate that the participatory training methods and hands-on practice used were able to reach all participants equally well. Overall, this activity has contributed to improving the economy of coastal communities and developing local potential based on fishery products.