1. State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyJiangxi Key Laboratory for Microscale Interdisciplinary StudyNanchang University Nanchang 330047 P. R. China
2. The People's Hospital in Jiangxi Province Nanchang 330006 P. R. China
3. Laboratory of Molecular Imaging and Nanomedicine (LOMIN)National Institute of Biomedical Imaging and Bioengineering (NIBIB)National Institutes of Health (NIH) Bethesda MD 20892 USA