A high-performance voltammetric methodology for the ultra-sensitive detection of riboflavin in food matrices based on graphene oxide-covered hollow MnO2 spheres
文献类型： 外文期刊
作者： Zhang, Lijun 1 ; Liu, Xian 1 ; Luo, Luyu 1 ; Hu, Cong 3 ; Fu, Jianwei 5 ; Chang, Xueping 1 ; Gan, Tian 1 ;
作者机构： 1.Xinyang Normal Univ, Inst Conservat & Utilizat Agrobioresources Dabie, Coll Chem & Chem Engn, Xinyang 464000, Peoples R China
2.Xinyang Normal Univ, Henan Key Lab Utilizat Nonmetall Mineral South He, Xinyang 464000, Peoples R China
3.Guilin Univ Elect Technol, Guangxi Key Lab Automat Detecting Technol & Instr, Guilin 541004, Peoples R China
4.Sichuan Tourism Univ, Culinary Sci Key Lab Sichuan Prov, Chengdu 610100, Peoples R China
5.Fujian Acad Agr Sci, Inst Qual Stand Testing Technol Agroprod, Fujian Key Lab Agroprod Qual & Safety, Fuzhou 350013, Peoples R China
关键词： Riboflavin; Voltammetry; Modified electrode; Graphene oxide; Hollow MnO2 spheres; Food analysis
期刊名称：FOOD CHEMISTRY （ 影响因子：6.306； 五年影响因子：6.219 ）
ISSN： 0308-8146
年卷期： 2021 年 352 卷
页码：
收录情况： SCI
摘要： A high-performance voltammetric methodology was developed to achieve ultra-sensitive detection of riboflavin, employing an electrode modified by graphene oxide-covered hollow MnO2 spheres nanocomposite with high catalytic activity, large surface area, and hierarchical layered structure. Under the optimal conditions, the current responses of the oxidation peak located at -0.39 V showed a good linear relationship versus the concentration of riboflavin in the range of 1.0 nM-4.0 mu M in acetate buffer (pH 5.4). The limit of detection was determined as 0.26 nM. Moreover, the proposed electrode exhibited high reproducibility (relative standard deviation of 1.7%, n = 10) and excellent stability (97.6% sensitivity within two months), which has been successfully applied to the quantification of riboflavin in complicated food matrices, with results in good accordance with those obtained by chromatography as a reference method, indicating it is an effective sensing platform for ultra-sensitive determination of riboflavin in practical applications.
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