D. Pal et al., LIVER LIPIDS AND FATTY-ACIDS OF THE STING RAY DASYATIS-BLEEKERI (BLYTH), Journal of the American Oil Chemists' Society, 75(10), 1998, pp. 1373-1378
The sting ray, Dasyatis bleekeri (Blyth), has been studied for lipids
and fatty acids of its liver. The neutral lipids identified were hydro
carbons, wax esters, steryl esters, 1-O-alkyl-2,3-diacylglycerols, tri
acylglycerols, and sterols. Neutral lipids were predominant (91.8%), m
ajor components being triacylglycerols (92.7%). Polyenoic fatty acids
of n-3 series, viz. eicosapentaenoic acid and docosahexaenoic acid, we
re high in the phospholipid and neutral lipid fractions. Cholesterol w
as the major component (67.9%) in the steryl ester fraction. Glyceryl
ethers, with chainlengths up to 30 carbons, were recorded with unsatur
ated, anteiso, iso, and normal chains. In wax eater alcohols, up to 32
-carbon chains were recorded. Hydrocarbons were up to 36-carbon chains
with anteiso, iso, and normal chains. Among branched chain hydrocarbo
ns, pristane was the major component (6.7%) and squalene was present a
t the level of 3.5%. Chimyl and batyl alcohol backbones were the major
components found in 1-O-alkyl-diacylglycerols.