斜带石斑鱼受精卵的营养成分分析OA

The orange-spotted grouper(Epinephelus coioides)is an economically important marine fish widely cul-tured in tropical and subtropical regions.Under aquaculture conditions,this species exhibits multiple spawning events an-nually,generating a substantial surplus of fertilized eggs beyond hatchery requirements.To evaluate its potential for value-added utilization,this study systematically characterized the nutritional composition of fertilized eggs.Proximate analysis revealed that the fertilized eggs contained 90.15％moisture,4.06％protein,2.25％lipids,and 0.44％ash(wet weight basis).Amino acid annalysis results showed that the content of seven essential amino acids(tryptophan not determined)was 12.42 g/kg,accounting for 39.72％of the total amino acids(TAA).The umami amino acids(Glu,Asp,Gly,and Ala)accounted for 10.25 g/kg,and 32.78％of TAA.Eighteen fatty acids were detected,with unsatu-rated fatty acids comprising 59.98％of total fatty acids,exceeding saturated fatty acids(40.02％).Notably,docosa-hexaenoic acid(DHA)and eicosapentaenoic acid(EPA)accounted for 24.09％and 4.34％,respectively.The eggs al-so contained various vitamins(pantothenic acid,folate,vitamins B6,B12,D,and E)and essential minerals(Zn,Mg,K,Na,Ca,P,and Se).Cholesterol content was relatively low(82.2 mg/100 g).These findings demonstrate that fer-tilized eggs of E.coioides represent a rich source of high-quality protein,n-3 polyunsaturated fatty acids,and micronu-trients,suggesting promising potential for applications in functional foods,nutraceuticals,and high-value bioproducts.