1. Department of Food Technology and Human Nutrition, Faculty of Agricultural Engeneering and Technology, Darmaga Campus, Bogor Agricultural University, Bogor 16002, Indonesia; Institute for Plant Analysis, Federal Centre for Breeding Research on Cultivated Plants (BAZ), Neuer Weg 22/23, D-06484 Quedlinburg, Germany; and Institute for Horticultural Sciences, Humboldt University Berlin, Albrecht-Thaer-Weg 3, D-14195 Berlin, Germany