1. College of Food Science and Engineering Ocean University of China Qingdao 266003 China
2. Laboratory for Marine Drugs and Bioproducts Pilot National Laboratory for Marine Science and Technology (Qingdao) Qingdao Shandong Province 266237 P. R. China
3. Department of Food Science, School of Environmental and Biological Sciences, Rutgers The State University of New Jersey New Brunswick NJ 08901 USA