http://jcps.bjmu.edu.cn

Journal of Chinese Pharmaceutical Sciences ›› 2014, Vol. 23 ›› Issue (8): 543-547.DOI: 10.5246/jcps.2014.08.070

• Original articles • Previous Articles     Next Articles

Spectrophotometric studies on the interaction between chlorogenic acid, neochlorogenic acid, cryptochlorogenic acid and lysozyme

Yuexiang Lan, Meixian Liu, Shizhong Chen, Hong Wang*   

  1. Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
  • Received:2014-05-07 Revised:2014-05-14 Online:2014-08-31 Published:2014-05-27
  • Contact: Tel./Fax: 86-10-82801559
  • Supported by:
    Beijing Natural Science Foundation (Grant No. 7142088).

Abstract:

The interactions of chlorogenic acid (CA), neochlorogenic acid (NCA) and cryptochlorogenic acid (CCA) with lysozyme (LYSO) were investigated in physiological buffer by fluorescence spectroscopy. The mechanism study indicated that CA, NCA and CCA could strongly quench the intrinsic fluorescence of LYSO through static quenching procedures withone binding site. Thermodynamic data show that the major force in the binding processes of CA to LYSO was hydrophobicinteractions; for NCA, it was the hydrogen bonds and van der Waals forces, as for the CCA system, the mainly force is electrostatic force.

Key words: Chlorogenic acid, Neochlorogenic acid, Cryptochlorogenic acid, Lysozyme, Fluorescence quenching

CLC Number: 

Supporting: