Abstract:

Compositions of crude protein, amino acids, crude fat, fatty acids and mineral elements in fast-frozen crab yolk powder were analyzed and evaluated using amino acid automatic analyzer, gas chromatography/mass spectrometer (GC-MS), inductive coupled plasma emission spectrometer (ICP) and atomic fluorescence spectrophotometer. The content of crude protein in samples was 15.61%, which contained at least 16 kinds of amino acids. Essential amino acids were determined to be 37.61% of total amino acids. Furthermore, the content of 4 delicious amino acids was 52.40%. The content of crude fat in samples was 45.09%. Unsaturated fat acids were rich in samples and reached up to 87.00%. Mineral elements especially for Ca, P, Fe, Zn and Se in samples also exhibited a higher level. Therefore, fast-frozen crab yolk powder is one of high-quality foods with higher edible and nutrition value. It is also good natural sources for healthy food, and worthy of further exploitation and utilization.

Key words: Eriocheir sinensis, river crab, nutritional components, nutrition quality, evaluation