An electrochemical platform for guanosine-5' -monophosphate detection using gold doped polypyrrole nanocomposite embedded on graphitic carbon nitride
文献类型： 外文期刊
作者： Huang, Yang 1 ; Gao, Tianyi 1 ; Sun, Chong 1 ; Han, Tingting 1 ; Zang, Mingwu 4 ; Wang, Daoying 1 ; Xu, Weimin 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Prod Proc, Nanjing 210014, Peoples R China
2.Nanjing Normal Univ, Sch Food Sci & Pharmaceut Engn, Nanjing 210023, Peoples R China
3.Suzhou Ind Pk Biotech Dev Co Ltd, Suzhou 215123, Peoples R China
4.China Meat Res Ctr, Beijing 100068, Peoples R China
关键词： Guanosine-5' -monophosphate; Nanocomposite; Electrochemical detection; Quality evaluation
期刊名称：ELECTROCHIMICA ACTA （ 影响因子：7.336； 五年影响因子：6.432 ）
ISSN： 0013-4686
年卷期： 2022 年 415 卷
页码：
收录情况： SCI
摘要： In this study, an electrochemical platform based on a novel ternary nanocomposite of advantageously united gold nanoparticles, polypyrrole and graphitic carbon nitride (Au-PPy@g-C3N4) for detection of guanosine-5'-monophosphate (GMP) was designed. Owing to the 7C-7C stacking interaction between the ring structures of the nucleobases in GMP and the hexagonal cells original from g-C3N4 in Au-PPy@g-C3N4, the irreversible oxidation of GMP occurred with the potential of 1.08 V (vs. SCE) in phosphate buffer solution (PBS). Under the optimized conditions, the peak currents were linear with the concentration of GMP ranging from 0.05 to 200 mu g.mL(-1) with a detection limit of 0.028 mu g.mL(-1) (S/N=3). Meanwhile, the Au-PPy@g-C3N4/APTES/GCE sensor exhibited good stability, high reproducibility and acceptable anti-interference ability. Importantly, the results of the detection of GMP with the proposed sensor were well consistent with the data determined by high performance liquid chromatography (HPLC), indicating a promising platform for evaluation of soup quality.
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