Abstract: The nutritive components and nutritional quality were analyzed and compared in muscles of four wild culters(Culter alburnus,Culter mongolicus,Culter dabryi and Cultrichthys erythropterus)in Shingkai Lake by conventional biochemistry methods.The results showed that these culters had 17.92%-19.86%of crude protein and 0.12%-0.68%of fat in muscles(wet weight).There was significantly higher crude protein content in the muscle of C.erythropterusthan than that in C.alburnus and C.dabryi(P＜0.05),while closed to that in C.mongolicus(P＞0.05).The minimal content of crude fat was found in Cultrichthys erythropterus,significantly lower than that in those three culters.The content of total amino acid(TAA)in muscles(dry weight)was descendantly ranged as:C. erythropterus(75.08%)＞C.dabryi(73.05%)＞C.alburnus(72.38%)＞C.mongolicus(67.20%).The order of total essential amino acid(EAA)of exprimental population was:C.erythropterus(33.04%)＞C.dabryi (32.89%)＞C.mongolicus(32.45%)＞C.alburnus(31.89%),and for contents of delicious amino acld (DAA),it was arranged as C.alburnus(24.64%)＞C.erythropterus(24.52%)＞C.dabryi(23.07%)＞C. mongolicus(17.34%).The essential amino acid index(EAAI)was from 66.59 to 69.14 in the muscles of the four species culter,the constitutional rate of the essential amino acids(EAA)within the Food and Agriculture Organization of the United Nations(FAO)/World Health Organization(WHO)Standard,indicating that all of four culters had high nutritional value including high protein content,low fat content and all amino acids.
2011, Vol. 26 
