Analysis and evaluation of nutritive composition in edible part of Coelomactra antiquata

In this paper,the contents of moisture,crude protein,crude fat,crude ash,composition of fatty acids,amino acids and trace elements in edible part of Coelomactra antiquata were analyzed.The results showed that contents of crude protein,crude fat and crude ash were 11.18 %(63.19 %,dry basis),0.54%,2.36 %,respectively.There were 18 varieties of coding amino acids and 8 varieties of essential amino acid for human needs in edible part.The content of essential amino acid was 20.93 %,the percentage of essential amino acid in total amino acids(E/TA) was 36.28 %,and Glu,Asp and Gly(7.80%,5.57% and 6.70% respectively) were higher than others.The highly unsaturated fatty acids of EPA and DHA were 20.41 %,10.20 %,respectively.By nutrition evaluation for the amino acids in edible part of C.antiquata to human needs,the contents of 4 varieties of delicious amino acids were 44.77%(in hydrolyzed amino acid) and 72.94%(in free amino acid) of total amino acids.According to the amino acids score(SAA),the first limited amino acid was Trp,on the basis of chemical core(SC),the first limited amino acid is Trp too.The essential amino acid index was 64.91,the content of Taurine(Tau) was 13830 mg/kg(dry).The result also indicated that the mineral Fe and Zn of edible part of C.antiquata were 130.0 mg/kg,52.0 mg/kg(dry) respectively.