why the AOCS method is appropriate to cod liver oil?

[elaine.zhang]

Hi, when i read some literatures, they use the AOCS method/BF3-METHANOL, they declare that the method is not suitable for COD liver oil, why, could anyone can explaine this? thanks!

[chromatographer1]

Polyunsaturated FAs will react with dissolved or otherwise present oxygen when mixed and heated with the BF3 solution and decompose the FAs.

best wishes,

Rod

[elaine.zhang]

whether do you mean that the major composite of cod liver oil is the free fatty acid?
best wishes,

Rod[/quote]

[chromatographer1]

I assumed you were testing Cod Liver Oil for its Fatty Acid content.

Rod

[elaine.zhang]

Thanks for your reply!
i am developing the method for vegetable oil, like flaxseed oil, borage oil,etc, and the fish oil, as well as for the cod liver oil, so i dont understand why the literature said their methods are not suitable for cod liver oil? what is the difference?
thanks!