关键词: 东北螯虾, 克氏原螯虾, 肌肉, 营养成分

Abstract:

In order to evaluate the nutritional value, nutritional components in muscle of Cambaroides dauricus and Procambarus clarkii were determined and analyzed using routine methods. The contents of general nutritional compositions, fatty acids and amino acids were compared between Cambaroides dauricus and Procambarus clarkii. Results showed that the contents of crude protein and crude fat in Cambaroides dauricus were slightly higher than those in Procambarus clarkii. Seventeen kinds of amino acids were detected in both species. The content of total amino acids was similar in two species, 15.18% for Cambaroides dauricus and 17.13% for Procambarus clarkii. The content of essential amino acids in Cambaroides dauricus was 6.25%, whereas 6.46% in Procambarus clarkii. Both species were rich in EPA and DHA. The proportions of EPA+DHA in Cambaroides dauricus and Procambarus clarkii were 7.24% and 3.69%, respectively. Therefore, Cambaroides dauricus and Procambarus clarkii are freshwater shrimps with high nutritional value. Based on the analysis of amino acid compositions, Procambarus clarkii exhibited higher nutritional value than Cambaroides dauricus. However, on the basis of the analysis of EPA and DHA in total fatty acids, Cambaroides dauricus and Procambarus clarkii had the equal nutritional value.

Key words: Cambaroides dauricus, Procambarus clarkii, muscle, nutritional composition