1. Department of Food and Beverage Management; National Kaohsiung University of Hospitality and Tourism; No. 1 Songhe Road Xiaogang District Kaohsiung City 81271 Taiwan
2. Department of Food Science; National Pingtung University of Science and Technology; No. 1 Hsueh Fu Road, Nei-Pu Hsiang Pingtung 91201 Taiwan