A Study of the Lipids and Carotenoprotein in the Prawn, Penaeus japonicus

摘要: The lipid and fatty acid composition of the hepatopancreas muscle prawn, Penaeus japonicus, were analyzed. was main storage organ, triglycerides phospholipids being its major components, while contained mainly phospholipids. compositions total lipids from similar to those in other marine animals. acids palmitic (16:0), oleic (18:1n-9), eicosapentaenoic (20:5n-3), docosahexaenoic (22:6n-3) acids. monoglycerides, diglycerides, triglycerides, cholesterol esters exhibited patterns, but each fraction characterized by a specific paraffin chain composition. A blue carotenoprotein (lambda max = 640 nm) containing astaxanthin also extracted purified hypodermis prawn. This has molecular weight ca. 280,000, which is much lower given for crustaceans. carotenoid prosthetic group released addition acetone, showed hypsochromic shift 470 nm characteristic shape free ketocarotenoids. TLC, infrared spectroscopy, chemical reduction, spectrophotometry, qualitative analysis HPLC used identify as unique chromophore carotenoprotein. Moreover, studies suggested all-trans-astaxanthin be component, accompanied an epimer cis-isomer.