1. Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, South District, Taichung, Taiwan 402, China
2. Department of Food Science, Tunghai University, 1727 Section 4 Taiwan Boulevard, Xitun District, Taichung, Taiwan 407224, China
3. Charng Ching Edible Oil CO. LTD., 42 Dougong Second Road, Douliou City, Yunlin County, Taiwan 640, China