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Journal of Solid State Electrochemistry

, Volume 17, Issue 3, pp 627–633 | Cite as

Enantioselective recognition of penicillamine enantiomers on bovine serum albumin-modified glassy carbon electrode

  • Yonghua Wang
  • Qian Han
  • Qing Zhang
  • Yihan Huang
  • Liju Guo
  • Yingzi Fu
Original Paper

Abstract

As a natural chiral selector, bovine serum albumin (BSA) has been used to recognize penicillamine (Pen) enantiomers through electrochemical methods. The recognition and assay rely on the stereoselectivity of BSA embedded in ultrathin Al2O3 sol–gel film coated on the surface of glassy carbon electrode (BSA/GCE). The enantioselective interaction between Pen enantiomers and BSA was monitored by cyclic voltammetry and electrochemical impedance spectroscopy measurements, from which larger response signals were obtained from d-Pen. The factors influencing the performance of the modified biosensor were also investigated. The association constant (K) was calculated to be 1.93 × 104 L mol−1 for d-Pen and 1.20 × 103 L mol−1 for l-Pen. A good linear response was exhibited with the concentration of Pen enantiomers by BSA/GCE over the range of 1 × 10−8–1 × 10−1 mol L−1 with a detection limit of 3.31 × 10−9 mol L−1.

Keywords

Bovine serum albumin Penicillamine enantiomers Stereoselectivity Chiral recognition 

Notes

Acknowledgments

This work was supported by the National Natural Science Foundation of China (20972128).

Supplementary material

10008_2012_1859_MOESM1_ESM.doc (42 kb)
Scheme 1 Processes summary of BSA electrochemical recognition of Pen enantiomers based on the enantioselective adsorption. (a) bare GCE, (b) BSA/GCE, (c) L-Pen/BSA/GCE, (d) D-Pen/BSA/GCE (DOC 42 kb)

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Yonghua Wang
    • 1
  • Qian Han
    • 1
  • Qing Zhang
    • 1
  • Yihan Huang
    • 1
  • Liju Guo
    • 1
  • Yingzi Fu
    • 1
  1. 1.Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, College of Chemistry and Chemical EngineeringSouthwest UniversityChongqingPeople’s Republic of China

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