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Voltammetric determination of ascorbic acid in the presence of acetaminophen and tryptophan using an improved carbon nanotube paste electrode(图)
Ascorbic acid Acetaminophen Tryptophan Carbon nanotube paste electrode Electrocatalysis
2013/9/26
A carbon paste electrode (CPE) modified with carbon nanotubes and 5-amino-3',4'-dimethyl- biphenyl-2-ol (5ADB) is prepared. Under the optimum pH of 7.0, the oxidation of ascorbic acid (AA) on the modi...
以酶法合成γ-D-glutamyl-L-tryptophan (γ-D-Glu-L-Trp)为研究体系,采用D-谷氨酰胺为γ-谷氨酰基供体,L-色氨酸为受体,测定得到了转肽反应的米氏常数(K m)为5.11 mmol·L-1,催化常数(Kcat)为3.92 mmol·min-1,γ-D-Glu-L-Trp的水解反应米氏常数(K′m)为2.31 mmol·L-1,催化常数(K′cat)为1...