1. School of Food Science and Engineering; South China Univ. of Technology; Guangzhou 510640 China
2. Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety; South China Univ. of Technology; Guangzhou 510640 China
3. Dept. of Nutrition and Food Science; Univ. of Maryland; College Park MD 20742 USA
4. Dept. of Chemistry; Jinan Univ.; Guangzhou 510632 China
5. Bioactive Botanical Research Laboratory, Dept. of Biomedical and Pharmaceutical Sciences, College of Pharmacy; Univ. of Rhode Island; Kingston RI 02881 USA
6. BGI-Shenzhen; Shenzhen 518083 China