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.