Related Experiment Video
Updated: Mar 16, 2026

Determination of Total Lipid and Lipid Classes in Marine Samples
Published on: December 11, 2021
Pristane and other hydrocarbons in some freshwater and marine fish oils
1Halifax Laboratory, Fisheries Research Board of Canada, Halifax, Nova Scotia.
Abstract:
Pristane levels in four commercial freshwater fish oils (alewife, tullibee, maria and sheepshead) were found to be markedly lower (0.0001% or less) than those in marine fish oils (herring, sand launce, cod liver and gray cod liver) selected for comparison on the basis of similar types of depot fat storage (0.008-0.107%). Certain normal alkanes were also identified by gas chromatography. Of these, heptadecane was predominant in all of the freshwater fish oils, but octadecane was more prevalent than heptadecane in three of the marine oils.
More Related Videos
Related Concept Videos
Structure of Lipids
Lipids as Anchors
The carboxy-terminal of most of the prenylated proteins, such as Ras proteins, contains...
Physical Properties of Alkanes
Diversity of Protists III
Overview of Fatty Acid Metabolism
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
Entropy and Solvation

