1. College of Pharmacy and Medical Research Center, Chungbuk National University, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea
2. Sustainable Bioresource Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Yuseoung, Daejeon 305-806, Republic of Korea