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Analysis of Amino Acid and Fatty Acid Composition of Meretrix lyrata

TANG Baojun,JIANG Chaojun,YIN Fei,GAO Lujiao(East China Sea Fisheries Research Institute,Chinese Academy of Fisheries Sciences,Shanghai 200090,China)  
The amino acid content and fatty acid composition in the flesh of clam Meretrix lyrata were determined.A total of 17 amino acids were detected,accounting for 52.26% of total dry tissue weight;the content of four kinds of flavor amino acids(aspartic acid,glutamic acid,glycine and alanine) was 22.07%,accounting for 42.23% of total amino acids;the content of essential amino acids(EAA) was 20.72%,and the composition ratio of essential amino acids was in line with the standard recommended by FAO/WHO,indicating that M.lyrata has high protein content and is a high-quality protein source.A total of 20 kinds of fatty acids were detected in the tissue of M.lyrata,in which the percentage of polyunsaturated fatty acids was 34.20%,and the percentages of EPA and DHA were 15.07% and 11.78%,respectively,indicating that the composition of fatty acids of M.lyrata is relatively complete and the clam has higher nutritional value.
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