阳澄湖中华绒螯蟹品质分析

本文对江苏省阳澄湖产中华绒螯蟹的商业品质，按商业品级和雌、雄，测定了其各部分含量和各项营养成分。该湖所产河蟹符合江南水乡青背、白肚、金瓜、黄毛的大闸蟹形态特征，肌肉、肚脏及性腺三大可食部分共占体重的３６．７２％，壳、鳃、胃及心脏四大非可食部分共占体重的５３．２６％。另有１０．０２％为血淋巴和组织液。一、二级商品蟹的雌蟹可食部分各高出雄蟹５．２８％和６．５５％，营养成分中，雌蟹的脂肪显著高雄蟹。在实

Quality analysis of Chinese mitten crab Eriocheir sinensis in Yangchenghu Lake

According to commercial grade and sex, the quality of Chinese mitten crab Eriocheir sinensis, produced in Yangchenghu Lake of Jiangsu Province, so called'Dazha Crab' famously, was analysed. Dazha Crab is characterized by blue back, white abdomen, gold leg, and yellow setae. The proportion of edible part(muscle, liver and gonad) makes up 36. 73% of body weight, and unedible part(shell, gill, stomach and heart) makes up 53. 26% of body weight; 10. 02% of its body weight is occupied by blood lymph and tissue liquid. In the first and second-grade products, the edible proportion in female is 5. 28% and 6. 55 % higher than those in male respectively. The female crab contains lipid significantly higher than the male. In 9 microelements measured, male has 7 elements higher than female except phosphorus. In amino acids, male crab has higher level than female in 13 amino acids, especially Gin.Pro and Ala, which are 16. 6%, 23. 3 % and 28. 5 % higher respectively. So it is considered that male crab is richer in microelements and amino acids than female.