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New Findings on Essential Amino Acids from Ningxia Medical University Summarized

February 11, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Data detailed on Essential Amino Acids have been presented. According to news reporting originating from Yinchuan, People's Republic of China, by NewsRx correspondents, research stated, "A convenient and low-cost synthesis approach is proposed for the development of a simple and novel electrochemical sensor for the determination of tryptophan (Try). In this synthesis process, graphene-like molybdenum sulfide was successfully obtained, and silver nanoflakes (AgNFs) were directly synthesized on the surface of molybdenum sulfide (MoS2) films, in this process chitosan (CS) and ascorbic acid (AA) acted as the stabilizer and reducing agent, respectively."

Our news editors obtained a quote from the research from Ningxia Medical University, "This nanocomposite was characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were employed to evaluate the electrochemical property of Ag-MoS2/CS toward the oxidation of tryptophan. Under the optimized experimental conditions, the oxidation peak currents are proportional to the concentrations of tryptophan over the range of 0.5 mu M to 120 mu M, and the detection limit is 0.05 mu M (S/N=3)."

According to the news editors, the research concluded: "Moreover, the proposed method is free of interference from other amino acid to other coexisting species."

For more information on this research see: Synthesis of Ag-MoS2/chitosan nanocomposite and its application for catalytic oxidation of tryptophan. Sensors and Actuators B-Chemical, 2014;192():42-50. Sensors and Actuators B-Chemical can be contacted at: Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland (see also Essential Amino Acids).

The news editors report that additional information may be obtained by contacting X.H. Xia, Ningxia Med Univ, Sch Basic Med Sci, Yinchuan 750001, People's Republic of China. Additional authors for this research include Z.X. Zheng, Y. Zhang, X.J. Zhao and C.M. Wang.

Keywords for this news article include: Asia, Yinchuan, Chemistry, Tryptophan, Electrochemical, Aromatic Amino Acids, Essential Amino Acids, People's Republic of China

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Source: Life Science Weekly

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