An electrochemical biosensor based on human serum albumin/graphene oxide/3-aminopropyltriethoxysilane modified ITO electrode for the enantioselective discrimination of d- and l-tryptophan
作者： Erhan Zor , Imren Hatay Patir , Haluk Bingol , Mustafa Ersoz
DOI: 10.1016/J.BIOS.2012.10.068
关键词: Chemistry 、 Analytical chemistry 、 Electrochemistry 、 Indium tin oxide 、 Enantiomer 、 Human serum albumin 、 Oxide 、 Graphene 、 Nuclear chemistry 、 Electrode 、 Cyclic voltammetry
摘要: A new electrochemical biosensor based on the human serum albumin/graphene oxide/3-aminopropyl-triethoxysilane modified indium tin oxide electrode (ITO/APTES/GO/HSA) has been developed for discrimination of tryptophan (Trp) enantiomers.The characterized by scanning electron microscopy (SEM) and techniques. The behaviors enantiomeric pairs (D- L-Trp) at ITO/APTES/GO/HSA have investigated cyclic voltammetry in concentration range 0.10-1.0 mM. clear separation between oxidation peak potentials D- L-Trp, 0.86 1.26 V, respectively, suggested that can be used as an Trp enantiomers. In order to find percentage form a mixture, is simultaneous detection L-Trp which showed one easily measured presence other.
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