1. College of Life Science, Langfang Teachers University, Langfang, Hebei, P.R. China;
2. Key Laboratory of Food, Nutrition and Safety, Ministry of Education, College of Food Science and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P.R. China;
3. Université Pierre et Marie Curie-Paris 6, Institute Parisien de Chimie Moléculaire, Paris, France