¹ RIKILT Wageningen University and Research Centre, P.O. box 230, 6700 AE Wageningen, The Netherlands ;

² JDSU Corporation, 2789 Northpoint Parkway, Santa Rosa, CA 95407, USA ;

³ RIKILT Wageningen University and Research Centre, P.O. box 230, 6700 AE Wageningen, The Netherlands and Food Quality and Design Group, Wageningen University, P.O. box 17, 6700 AA Wageningen, The Netherlands