1. School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, P. R. China,
2. Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin, P. R. China, and
3. School of Biotechnology Food Science, Tianjin Key Laboratory of Food and Biotechnology, Tianjin University of Commerce, Tianjin, P. R. China