1. Department of Food Science and Biotechnology, Sungkyunkwan University, Suwon, Gyeonggi-do, 440-746, Republic of Korea
2. Research Laboratories in Sciences Applied to Food, Canadian Irradiation Centre, Institut National de la Recherche Scientifique−Institut Armand-Frappier, 531, Boulevard des Prairies, Laval, Québec, H7V 1B7, Canada