几种淡水蚌外套膜蛋白质氨基酸组成及部分元素分析

测定了三角帆蚌、圆背角无齿蚌、褶纹冠蚌、背视丽蚌外套膜的粗蛋白含量 ,分析了外套膜干粉的氨基酸组成 ,并采用原子吸收光谱法和等离子吸收光谱法测定三角帆蚌、圆背角无齿蚌、褶纹冠蚌外套膜的 12种元素含量。结果表明 :干燥外套膜蛋白质含量为 :三角帆蚌 4 1 34% ,圆背角无齿蚌2 2 0 3% ,褶纹冠蚌 32 14 % ,背视丽蚌 7 78%。这四种淡水蚌外套膜均含有 17种氨基酸。被测的 12种元素中 ,Cu元素含量最高 ,其次是Fe ,Mn ,Mg ,Ca ,Zn ,Cr,而Ni,Co ,Pb ,Hg等元素含量较低。这四种淡水蚌外套膜是一类优质的动物蛋白质资源。

ANALYSIS OF PROTEIN, AMINO ACIDS AND SOME ELEMENTS IN MANTELLUM OF FOUR KINDS OF FRESHWATER MUSSEL

The crude protein contents in mantellum of four kinds of freshwater mussel were determined and the amino acids(AA)were analyzed.Atomic absorption and plasma absorption spectroscopy were used to determine the contents of 12 metal elements in the freshwater mussels.The results showed that the protein contents in dried mussel are 41.34% for Hyriposis cumingii Hea,22.03% for Anodonta woodiana pacifica Heude, 32.14% for Cristaria plicata Leach,and 7.78% for Law protula Leai.All of the four mussels contain 17 kinds of AA.Among the 12 analyzed elements in the freshwater mussels,the contents of Cu are the highest,the contents of Fe,Mn,Mg,Ca,Zn and Cr are less than those of Cu,whereas the contents of Ni,Co,Pb,and Hg are the least.These results showed that the mantellum of all the four testing mussels are good protein resources.