1. Dept. of Biotechnology, College of Life Sciences and Biotechnology; Korea Univ.; Seoul 02841 Republic of Korea
2. Dept. of Food Biosciences and Technology, College of Life Sciences and Biotechnology; Korea Univ.; Seoul 02841 Republic of Korea
3. Food Additives and Packaging Div.; Natl. Inst. of Food and Drug Safety Evaluation; Osong Chungcheongbuk-do 28159 Republic of Korea
4. Dept. of Food Bioscience and Technology, College of Life Sciences and Biotechnology; Korea Univ.; Seoul 02841 Republic of Korea