A gas–liquid chromatographic examination of the component fatty acids of the milk of the grey (Atlantic) seal confirms previous findings that in general composition the milk fats of marine mammals resemble the depot fat. An empirical correction system is suggested for argon ionization detectors.
The use of the esters of whole cod liver oil fatty acids as secondary standards in the GLC identification of animal polyunsaturated fatty acids is feasible. This technique is exemplified by an analysis on several polyester substrates of the component fatty acids of a somewhat unusual marine‐type oil from the Atlantic Leatherback turtleDermochelys coriacea coriacea (Linnȳ), with provisional identifications of minor components through the linear log plot and separation factor procedures.
The seasonal variations in lipid content and general "condition" of cod, Gadus morhua L., from an inshore population have been determined.Four female and four male fish were chosen from 20 live cod brought in monthly from Terence Bay, Halifax County, Nova Scotia, the fish were pooled and the lipid content determined on the flesh, livers, and gonads. The flesh lipids varied from 0.57% to 0.74% and the oil content of the livers from 15% to 75%.The general "condition" of the fish as expressed by [Formula: see text], the liver condition by [Formula: see text], and the fat content of the liver all showed seasonal variation with maxima in the fall and minima in the spring. KF varied from 0.79 to 1.05 and KL from 1.0 to 4.5. No seasonal variation in the amount of flesh lipids could be detected.
The component fatty acids of cod liver oil from a single fish have been determined by gas-liquid chromatography on several polyester columns with identifications by the linear log plot and separation factor procedures.A number of acids have been detected which are not listed in recent comparable studies.
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