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A novel non-enzymatic sensing platform for determination of 5 '-guanosine monophosphate in meat

文献类型： 外文期刊

作者： Fei, Qiqi 1 ; Zhang, Nana 1 ; Sun, Chong 3 ; Zhang, Panpan 1 ; Yang, Xiaodi 1 ; Hua, Yunhui 2 ; Li, Li 4 ;

作者机构： 1.Nanjing Normal Univ, Coll Chem & Mat Sci, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Jiangsu Key Lab Biomed Mat, Nanjing 210023, Jiangsu, Peoples R China

2.Nanjing Univ Chinese Med, Dept Dermatol, Hosp Nanjing 2, Nanjing 210003, Jiangsu, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Agr Prod Proc, Nanjing 210014, Jiangsu, Peoples R China

4.Nanjing Xiaozhuang Univ, Key Lab Adv Funct Mat Nanjing, Nanjing 211171, Jiangsu, Peoples R China

关键词： g-C3N4 doped carboxylated MWCNTs nanocomposite; 5 '-Guanosine monophosphate; Electrochemical non-enzymatic sensor; Quality evaluation

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN： 0308-8146

年卷期： 2019 年 286 卷

页码：

收录情况： SCI

摘要： Graphitic carbon nitride (g-C3N4) doped carboxylated MWCNTs nanocomposite was synthesized using a simple method. The composite films containing 45 wt%, 50 wt%, 56 wt%, 67 wt% fraction of the carboxylated MWCNTs doped into g-C3N4 were fabricated and characterized. An electrochemical non-enzymatic sensor for determination of 5'-guanosine monophosphate (GMP) based on the nanocomposite was developed. The results indicate that the g-C3N4-carboxylated MWCNTs nanocomposite has highly electrocatalytic activity, good conductivity and biocompatibility, which plays an essential role in the determination of GMP. Under the optimum conditions, the linear fitting equation was I (mu A)=-0.0022c (mu g.mL(-1))+ 0.3560 (R-2= 0.9982). The linear range was from 0.5 to 100 mu g.mL(-1) and the detection limit (LOD, S/N= 3) was 0.109 mu g.mL(-1). This non-enzymatic sensor can offer a better alternative to other methods for the analysis of GMP because of cheap cost, low detection limit and good anti-jamming capability in meat quality evaluation.

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