期刊
COLLOIDS AND SURFACES B-BIOINTERFACES
卷 74, 期 1, 页码 150-153出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfb.2009.07.010
关键词
Selenocystine; Selenomethionine; Electrochemical oxidation; Voltammetric characteristic
资金
- Key Project of Natural Science Foundation of Guangdong Province [31884]
- Natural Science Foundation of Guangdong Province [05103295]
- Natural Science Foundation of China [20771044]
Electrochemical oxidation of selenocystine (SeCys) and selenomethionine (SeMet), on a gold electrode was studied by cyclic voltammetry (CV), rotating disk electrode technique (RDE) and chronocoulometry (CC). In 0.2 mol/L HAc-NaAc (pH = 3.90) supporting electrolyte, anodic peak I potential of SeCys and SeMet was 810 mV and 638 mV, respectively, and this electrode process was diffused controlled. The electrochemical oxidation process of SeCys, in which six electron-transfers were involved, yielded selenocystine selenoxide. The electrochemical oxidation process of SeMet, in which two electron-transfers were involved. yielded selemethionine selenoxide. (C) 2009 Elsevier B.V. All rights reserved.
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