1. Dept. of Food Science and Biotechnology, Dongguk Univ; BMC Campus; Goyang-si 410-820 Korea
2. Dept. of Nutrition and Food Science-Food Technology; Univ. of Bonn; Roemerstrasse 164 53117 Bonn Germany
3. Dept. of Food Science and Nutrition; Dankook Univ; Yongin-si 448-701 Korea