1. School of Pharmaceutical Sciences South-Central Minzu University 182 Minyuan Road Hongshan District Wuhan 430074 P. R. China
2. Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry Guangxi Academy of Sciences No.98 Daling Road Nanning 530007 P. R. China
3. VTT Technical Research Centre of Finland, Division of Industrial Biotechnology and Food Solutions Tietotie 2 Espoo 02150 Finland