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

Fei, QQ (Fei, Qiqi)[ 1 ] ; Zhang, NN (Zhang, Nana)[ 1 ] ; Sun, C (Sun, Chong)[ 3 ] ; Zhang, PP (Zhang, Panpan)[ 1 ] ; Yang, XD (Yang, Xiaodi)[ 1 ] *（杨小弟）; Hua, YH (Hua, Yunhui)[ 2 ]*; Li, L (Li, Li)[ 4 ]

[ 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

FOOD CHEMISTRY，201907,286,515-521

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.

文章链接：

https://www.sciencedirect.com/science/article/pii/S0308814619303668?via%3Dihub

版权与免责声明：本网页的内容由收集互联网上公开发布的信息整理获得。目的在于传递信息及分享，并不意味着赞同其观点或证实其真实性，也不构成其他建议。仅提供交流平台，不为其版权负责。如涉及侵权，请联系我们及时修改或删除。邮箱：sales@allpeptide.com