Analysis and Evaluation of Nutritional Composition in Muscle of Hybrid Grouper Epinephelus akaara♀×E. lanceolatus♂
WU Shuiqing1, LUO Huiyu1, ZHENG Leyun1, WU Huihuang2, LIN Kebing1, GE Hui1, JIANG Shuangcheng1, ZHANG Zhe1, QIU Fengyan3
1.Key Laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province, Fisheries ResearchInstitute of Fujian, Xiamen 361013, China; 2.Fisheries College, Jimei University, Xiamen 361021, China; 3.Xiamen Xiao Deng Fisheries Science and Technology Co. Ltd., Xiamen 361104, China
Abstract：Approximate nutrient compositions, and levels of amino acid and fatty acid in muscle were analyzed and evaluated in hybrid grouper Epinephelus akaara♀×E. lanceolatus♂ with body weight of (182.84±29.35) g by route methods, and the national standard in order to verify the nutritional characteristics of the hybrid grouper. It was found that the hybrid grouper had muscular moisture of (74.07±0.71) %, lipid content of (21.52±0.78) %, crude protein content of (4.03±0.15) % and crude ash content of (1.29±0.07) %. Seventeen amino acids were detected from the muscle, with the total quantity of (19.88±0.15) %, essential amino acids (EAA) content of (8.64±0.13) %, delicious amino acids (DAA) of (7.64±0.16) %, essential amino acid index (EAAI) of 85.19, and the amino acid composition ratio accorded with the standard of FAO/WHO. There were 17 main fatty acids detected in the muscle of hybrid grouper, saturated fatty acid (SFA) content of (27.63±1.15) %, monounsaturated fatty acid (MUFA) content of (22.75±1.22) %, and polyunsaturated fatty acid (PUFA) content of (32.59±1.90) %, especially DHA+EPA accounting for (19.27±1.27) % in total fatty acids. The finding indicates that hybrid grouper is a kind of fish with high nutritive value and a potential aquaculture candidate.
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2020, Vol. 39 
