Proximate Composition, Amino acid Profile, and Fatty acid Composition of Selected Marine Fishery By-Products
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Thirunavukkarasu Muralisankar
[1]
;
Selvam Ganapathy
[1]
;
Anjali Kottayil Mani
;
Mathews Varkey
[2]
;
Anup Mandal
[2]
;
Shanmuganathan Kandan
[2]
-
[1] Bharathiar University
Bharathiar University
India
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[2] Central Aquaculture Genetics Laboratory, Rajiv Gandhi Centre for Aquaculture, Tamilnadu
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- Localización: Thalassas: An international journal of marine sciences, ISSN 0212-5919, Vol. 42, Nº. 2, 2026
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
The proximate composition, amino acid profile, and fatty acid content of marine fishery by-products were evaluated to assess their nutritional quality and potential applications. Fish by-products exhibited higher crude protein (up to 51.41%) compared to crustaceans, whereas crustacean by-products, particularly Penaeus semisulcatus, showed elevated total carbohydrate (13.10%). Lipid content was highest in Lethrinus lentjan (11.38%) and P. semisulcatus (12.35%). Amino acid analysis revealed that Stolephorus indicus by-products contained the highest total essential (79.25 g kg⁻¹) and non-essential (102.04 g kg⁻¹) amino acids among fishes, while P. semisulcatus ranked highest among crustaceans (essential: 79.21 g kg⁻¹; non-essential: 114.07 g kg⁻¹). Fatty acid profiling indicated that the by-products of Penaeus vannamei, Sardinella longiceps, and Portunus sanguinolentus were rich in saturated (9.81%), monounsaturated (13.30%), and polyunsaturated fatty acids (40.64%), respectively. Notably, omega-3 fatty acids, including DHA and EPA, were present at higher levels in the by-products of S. longiceps and P. semisulcatus compared to other fish and crustacean by-products. Overall, these species-specific variations highlight the nutritional richness and biochemical diversity of marine fishery by-products, supporting their use as sustainable raw materials for nutraceuticals, pharmaceuticals, and aquafeeds, and promoting a circular bioeconomy in marine resource utilization
