What You Need to Know
During rendering, triglycerides in seal fat melt and coalesce, allowing the oil to rise above the solid connective tissue. The process may induce limited hydrolysis, releasing free fatty acids such as EPA and DHA, while glycerol remains in the residual solids. Controlled temperatures preserve the unsaturated fatty acids and prevent oxidation.
The Science
Primary Reaction
Melting and partial hydrolysis of triglycerides