2.2. Chemicals and reagents
The analytical standards used to determine the tocols (tocopherols and
tocotrienols), sterols and fatty acids composition were obtained from
Merck KGaA (Darmstadt, Germany). All organic solvents of HPLC grade were
purchased from Sigma-Aldrich through Delta Kimya (Adana, Turkey). All
other chemicals (analytical quality) were purchased from Sigma-Aldrich
and Merck.