1. Department of Food Science and Engineering, Ewha Womans University, Seoul, 120-750, Republic of Korea
2. Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0418
3. Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0246
4. Department of Biological System Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0303