1. Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing/Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences No.133; Yihenglu Guangzhou 510610 China
2. U.S. Department of Agriculture; Eastern Regional Research Center, Agricultural Research Service, 600 East Mermaid Lane; Wyndmoor Pennsylvania 19038