Furan Fatty Acids in the Lipids of the Cresthead Flounder

Abstract

The lipid classes and fatty acids of flesh, liver, and gonad from male cresthead flounder Limanda schrenki were investigated with special reference to furan fatty acids (F acids). The major lipid classes were phospholipids (PL) (60.0-69.4% of total lipids), followed by triacylglycerols (TG) (19.8%) in the flesh, free fatty acids (FFA) (16.4%) in the liver, and sterols (ST) (25.0%) in the testis. The liver lipids contained particularly large amounts (9.2%) of sterol esters (SE) when compared to those from flesh and testis. F acids were found in liver lipids in high amounts (12.22% of total fatty acids), but in the flesh and testis, in much smaller amounts (less than 0.3 %). In the liver lipid classes, F acid content was 53.09% of total fatty acids in SE, 9.06% in TG, 7.46% in FFA, and 4.86% in PL. In F acids of liver SE, F4(12,15-epoxy-13,14-dimethyIoctadeca-12,14-dienoic) acid was the major component (60.5% of total F acids), following by F« acid (31.4%) and F5 acid (4.5%). © 1992, The Japanese Society of Fisheries Science. All rights reserved.