Buxtorf U P, Pavesic V
Z Lebensm Unters Forsch. 1977 Feb 25;163(2):104-6. doi: 10.1007/BF01126027.
We had seen, that after preliminary fat extraction the antioxidants are only incompletly extracted, contray to prior publications of other authors, the antioxidants were extracted from the foodstuffs directly, methylated with diazomethane and estimated by gaschromatography. Propyl, octyl and dodecyl gallate as well as butylated hydroxyanisol and butylated hydroxytoluene were estimated.