1. Department of Applied Life Science, College of Life and Environmental Sciences, Konkuk University, Seoul 143-701, Republic of Korea, and Department of Neuroscience and Inam Neuroscience Research Center, Sanbon Medical Center, Wonkwang University, Gunpo-city, Kyunggido 435-040, Republic of Korea Division of Wood Chemistry and Microbiology, Korea Forest Research Institute, Seoul 130-712, Republic of Korea