College of Chemistry&Chemical Engineering;
Hubei University;
Wuhan 430062;
China;
State Key Laboratory of Virology&College of Chemistry and Molecular Sciences;
Wuhan University;
Wuhan 430072;
China;
Key Laboratory for Oral Biomedical Engineering of MOE&School of Stomatology;
Wuhan University;
Wuhan 430072;
China;
caffeine; human; serum; albumin; fluorescence; quenching; circular; dichroism; (CD); spectroscopy; UV-vis; spectroscopy.;