1. 2010-2012. Discipline coordinator, Agricultural resource science discipline, Department of Life Sciences, National Science Council, Taiwan.
2. 2006-present. Chair professor, National Chung Hsing University, Taiwan
3. 1988-present. Professor, Department of Food Science and Biotechnology, National Chung Hsing University, Taiwan.
4. 1993-1996. Chairman, Department of Food Science, National Chung Hsing University, Taiwan.
5. 2002-2003. President, Taiwan Association for Food Science and Technology, Taiwan.
6. 2001-2012. Executive Secretary, Inter-departments Promoting Committee for Research and Development of Functional Foods, Taiwan.
7. 1995-present. Adjunct professor, Department of Food Science, Tunghai University, Taiwan.