1. Faculty of Home Economics, Laboratory of Culinary Science, Kyoto Women's University, Higashiyama-ku, Kyoto City, Japan 605-8501.
2. Faculty of Home Economics, Laboratory of Food Technology, Kobe Women's University, Suma-Ku, Kobe City, Japan 654-8585.
3. Corresponding author. Phone: 81787372431. Fax: 81787325161. E-mail: seguchi@suma.kobe-wu.ac.jp