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All Journal SINTA Journal (Science, Technology, and Agricultural) Jurnal Ilmiah AgriSains
Nurwulan, Afrida
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Environmental Science Physics Veterinary

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Proximate Composition Analysis of Gracilaria sp. Seaweed from Local Coastal Waters Nurwulan, Afrida; Bendi Sabela
SINTA Journal (Science, Technology, and Agricultural) Vol. 6 No. 2 (2025)
Publisher : Perkumpulan Dosen Muda (PDM) Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37638/sinta.6.2.295-306

Abstract

Gracilaria sp. is one of the commercially valuable seaweeds with potential applications in the food and industrial sectors, particularly due to its high polysaccharide content. This study aimed to determine the basic chemical composition of Gracilaria sp. through proximate analysis, including moisture, ash, protein, fat, and carbohydrate content. Samples were collected from Singkawang, West Kalimantan, and the results were compared with secondary data from various coastal regions in Indonesia. The proximate analysis showed that the Singkawang sample contained 79.80 ± 0.67% moisture, 1.29 ± 0.26% protein, 3.68 ± 0.07% fat, 0.89 ± 0.04% ash, and 14.38 ± 0.83% carbohydrates. Variation among regions indicates that environmental factors such as water substrate, sunlight exposure, nutrient availability, harvest age, and post-harvest treatment significantly influence the nutritional composition. Carbohydrates were identified as the dominant component, highlighting the potential of Gracilaria sp. as a source of dietary fiber and hydrocolloid material. Overall, the findings suggest that nutritional characteristics of Gracilaria sp. are strongly affected by geographical and handling factors, emphasizing the importance of standardized processing and proper cultivation site selection to optimize its utilization for food and industrial applications.
Antioxidant Activities of The Brown Seaweed Sargassum: Narrative Review: Aktivitas Antioksidan Rumput Laut Cokelat Sargassum: Naratif Review Sabela, Bendi; Nurwulan, Afrida; Ramadhini, Tri Karimah; Khanna, Priatno
Jurnal Ilmiah AgriSains Vol. 26 No. 3 (2025): Jurnal Ilmiah AgriSains
Publisher : Fakultas Peternakan dan Perikanan, Universitas Tadulako, Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/jiagrisains.v26i3.2025.163-174

Abstract

Rumput laut cokelat Sargassum merupakan rumput laut yang telah banyak dimanfaatkan untuk produk pangan maupun non pangan. Sargassum memiliki kandungan senyawa bioaktif yang tinggi dan beragam. Sargassum memiliki berbagai macam bioaktivitas terutama antioksidan. Review artikel ini bertujuan untuk menyusun and merangkum data terbaru mengenai senyawa bioaktif dan antioksidan rumput laut Sargassum. Review artikel menggunakan artikel penelitian yang bersumber dari referensi ilmiah ScienceDirect terbitan tahun 2020–2025. Kandungan senyawa bioaktif dari berbagai spesies rumput laut Sargassum, yakni senyawa fenolik (flavonoid, fenol), alkaloid, steroid, terpenoid, saponin, glikosida kardiak, mycosporine-like amino acids, dan pigmen (fukosantin, flobatanin, klorofil-a, klorofil-d, α-karoten, β-karoten, xantofil, fikobiliprotein, dan karotenoid). Senyawa bioaktif utama rumput laut Sargassum, yakni senyawa fenolik (0,09791–521,84 mg GAE/g). Sargassum menunjukkan adanya aktivitas antioksidan pada berbagai metode pengujian (DPPH, FRAP, dan ABTS). Persentase inhibisi aktivitas antioksidan Sargassum berdasarkan metode DPPH berkisar 0,18–89,84% dan ABTS berkisar 64,018–93,94%. Aktivitas antioksidan Sargassum dipengaruhi oleh kandungan senyawa bioaktif, metode ekstraksi, konsentrasi ekstrak, spesies, dan lokasi sampel. Kandungan senyawa fenolik dan aktivitas antioksidan Sargassum berpotensi untuk digunakan dalam pangan fungsional, kemasan, kosmetik, dan farmasi.
Co-Authors Bendi Sabela Khanna, Priatno Ramadhini, Tri Karimah Sabela, Bendi