1. Institute for Biochemistry and Technology of Lipids; H.P. Kaufmann-Institute, BAGKF; Piusallee 68 Münster D-48147 German
2. ; Institute for Food Chemistry; University of Münster; Piusallee 7 Münster D-48147 Germany
3. ; Laboratory of Oils and Fats; University of Campinas; Campinas CEP 13081-970 Brazil
4. Institute for Chemistry and Physics of Lipids, BAGKF; Piusallee 76 Münster D-48147 Germany