Abstract:

Abstract: (Method) The national standard methods was used to analyzing The national standard methods was used to analyzing and evaluating the nutrition components in the muscles of Corbicula fluminea, Bellamya aeruginosa, Cipangopaludina cathayensis in Zhejiang Province, which in order to supply theoretic basis for the nutrient research of mussels, production of feed and development of novel food. The results showed that water content, ash, crude protein, crude fat and in Bellamya aeruginosai and Cipangopaludina cathayensis were similar, but the content of carbohydrates were different. However, significant differences in ash, crude fat and carbohydrates between Corbicula fluminea and Bellamya aeruginosa, Cipangopaludina cathayensis were observed. There were 18 common amino acids in three freshwater mussels, of which 8 were essential amino acids, and the first limiting amino acid was Val and the second limiting amino acid was Ile. Moreover, the content of Glu was the highest among 18 amino acids in three freshwater mussels. The content of flavor amino acids was very close in Bellamya aeruginosa and Cipangopaludina cathayensis, which was up to 40 %. The ratio of essential amino acids to total amino acids was approximately 35 % and close to the value recommended by WHO/FAO (35.38 %). There were wealth of crude protein, crude fat and the kind and content of amino acids in the soft part of three freshwater mussels, which had a great prospect of the industrial process.