1. UMR IATE, Laboratoire de Lipotechnie, CIRAD, TA 40/16, 73 rue Jean François Breton, 34398 Montpellier Cedex 5, France; Departamento de Ciencia de Alimentos y Biotecnología, Escuela Politecnica Nacional, P.O. Box 17 01 2759, Quito, Ecuador; Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan