Analysis of Nutritional Compositions in Muscle of Wild Sword Prawn Metapenaeus ensis with Different Sizes
JI Dewei, YAN Maocang, HU Lihua, CHEN Chen, ZHANG Min
Wenzhou Key Laboratory of Marine Biological Genetics and Breeding, Zhejiang Key Laboratory of Exploitation and Preservation of Coastal Bio-Resource, Zhejiang Mariculture Research Institute, Wenzhou 325005, China
Abstract：In this study, in order to understand the nutrient composition in muscle of wild sword prawn Metapenaeus ensis from Raoping sea area, the nutrient contents, amino acid and fatty acid composition were determined and comparatively analyzed among different sizes of sword prawn [large size (29.45±3.85) g, middle size (8.01±1.11) g and small size (3.06±0.41) g]. The results showed that the contents of water and crude fat were negative correlated with body weight; while the content of crude protein, branched-chain amino acids/aromatic amino acids ratio and coefficient of variation were positively correlated with body weight (P＜0.05). The essential amino acid score was highest in middle size group (73.70) (P＜0.05); DHA, C20:4(n-6) and EPA were the most abundant among 23 fatty acids, the content of C20:4(n-6) was highest in large size group while the contents of EPA and DHA were lowest in this group (P＜0.05), and the index of thrombogenicity was highest in large size group. The crude protein content was relatively high in sword prawn and the percentage of shrimp flavor amino acids was extremely high. The ratio of branched-chain amino acid to aromatic amino acid which indicated health care effect was high. The essential amino acid score was relatively high while the component was not in balance, the percentages of essential amino acids and delicious amino acids were relatively lower. The content of crude fatty was moderate, the DHA, C20:4(n-6) and EPA which are good for reducing blood lipid and inhibiting thrombosis were significantly higher in sword prawn than in other species of shrimp, index of atherogenicity and index of thrombogenicity were relatively low and the fatty acid evaluation was high.
冀德伟, 闫茂仓, 胡利华, 陈琛, 张敏. 不同规格野生刀额新对虾肌肉营养成分分析[J]. 水产科学, 2022, 41(6): 1045-1051.
JI Dewei, YAN Maocang, HU Lihua, CHEN Chen, ZHANG Min. Analysis of Nutritional Compositions in Muscle of Wild Sword Prawn Metapenaeus ensis with Different Sizes. Fisheries Science, 2022, 41(6): 1045-1051.
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2022, Vol. 41 
