1. Department of Pharmacognosy Material Development, Samcheok National University, Samcheok 245-711, Korea; Gyeonggi-do Agricultural Research and Extension Services, Hwasong 445-972, Korea; College of Natural Resources, Yeungnam University, Kyongsan 712-749, Korea; and College of Bio-Resources Science, Dankook University, Cheonan 330-714, Korea