It is normal to taste slightly bitter, and it is harmless to human body. At present, there are three reasons for the bitterness of linseed oil:
1, flaxseed contains endogenous cyanogenic glycoside.
2. Lignans separated from flaxseed skin caused this bitter taste.
3. Most studies believe that the bitter substance in linseed oil comes from a short protein peptide, and the bitterness in short protein peptide is caused by hydrophobic amino acid residues released by hydrolysis products. Generally, the hydrophobic groups of natural protein are hidden in it, so it will not present bitterness. However, when protein is hydrolyzed into small peptides, these hydrophobic groups will be exposed.