1. Dept. of Food Science and Biotechnology, Natl. Chung Hsing Univ.; 250 Kuokuang Rd.; Taichung city 40227; Taiwan, ROC
2. Dept. of Food and Beverage Management, Ta Hwa Univ. of Science and Technology; No. 1 Dahua Rd.; Qionglin Shiang; Hsinchu County 307; Taiwan, ROC