Fishes· 2026Q2
Quality Evaluation and Nutrient Profiling of Siganus fuscessens from Multiple Regions in Guangxi, China
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- Q2SCImago
- 2026year
Short summary
Rabbitfish (Siganus fuscescens) from Qinnan, China, exhibited superior protein quality, with higher total amino acids, essential amino acids, and essential amino acid index compared to fish from Hepu and Tieshangang.
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Key points
- Rabbitfish from Qinnan had higher moisture and crude protein but lower ash content compared to other regions.
- Glutamic and aspartic acids were the dominant amino acids, with essential amino acid ratios (EAA/TAA) ranging from 35.63 to 36.16%.
- Qinnan fish demonstrated superior protein quality based on total amino acids, essential amino acids, and the essential amino acid index.
- Fish from Tieshangang were particularly rich in EPA and DHA, essential omega-3 fatty acids.
AI-generated from the title and abstract; the full text is not read.
Abstract
This study assessed muscle quality and nutritional components of farmed Siganus fuscescens (rabbitfish) from Hepu, Qinnan and Tieshangang in Guangxi, China. Proximate nutrients, amino acids and fatty acids in fish muscle were determined. Qinnan samples had higher moisture and crude protein but lower ash content. Glutamic and aspartic acids dominated detected amino acids. The ratios of essential amino acids to total amino acids (EAA/TAA) and to non-essential amino acids (EAA/NEAA) ranged from 35.63 to 36.16% and 68.47 to 69.33%, respectively. Qinnan fish possessed the highest contents of total amino acids (TAA), essential amino acids (EAA), flavor amino acids (FAA), and the highest essential amino acid index (EAAI), indicating superior protein quality. The fatty acid profiles revealed that saturated fatty acids (SFA), monounsaturated fatty acids (MUFA), and polyunsaturated fatty acids (PUFA) each constituted more than 20% of the total fatty acids. Moreover, fish from Tieshangang were particularly rich in eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Obvious regional nutritional differences existed in cultured rabbitfish. This work provides references for its quality assessment, resource utilization and targeted feed development.
The authors' abstract, as published at the source. Fishes, 2026 · DOI ↗
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