Fatty acid compositions of the major phosphoglycerides from fish neural tissues; (n−3) and (n−6) polyunsaturated fatty acids in rainbow trout (Salmo gairdneri) and cod (Gadus morhua) brains and retinas

Citation

Tocher DR & Harvie DG (1988) Fatty acid compositions of the major phosphoglycerides from fish neural tissues; (n−3) and (n−6) polyunsaturated fatty acids in rainbow trout (Salmo gairdneri) and cod (Gadus morhua) brains and retinas. Fish Physiology and Biochemistry, 5 (4), pp. 229-239. https://doi.org/10.1007/BF01874800

Abstract
The fatty acid compositions of brain phosphoglycerides from a freshwater fish, the rainbow trout (Salmo gairdneri), and a marine fish, the cod (Gadus morhua), were determined and compared with those from a terrestrial mammal, the rat. Fish brain lipids were characterized by a higher degree of unsaturation encompassing increased percentages of (n–3)PUFA (226 and 205) and lower percentages of (n–6)PUFA (204 and 224). However the distribution of fatty acids and specific PUFA between different phosphoglycerides was essentially similar in rat and fish brain tissue. PE and PS contained the highest percentages of 226(n–3), PI was characterized by higher 180 and 204(n–6)/205(n–3), and PC had higher 160 and the lowest percentage of PUFA in all species. A generally similar pattern was found in the fish retinal phosphoglycerides except that PC was also rich in 226(n–3). Overall trout brain phosphoglycerides were slightly more unsaturated than the cod lipids but with lower (n–3)/(n–6) ratios whereas cod retinal lipids were more unsaturated than the trout retinal lipids.

Keywords
brain; composition; fatty acids; fish; phospholipids; polyunsaturated; retina

Journal
Fish Physiology and Biochemistry: Volume 5, Issue 4