1. Zhejiang Huakang Pharmaceutical Co., Ltd, 18, Huagong Road, Huabu Town, Kaihua County, Zhejiang 324302, Quzhou, P. R. China
2. Key Laboratory of Bioorganic Synthesis of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China
3. School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, P. R. China