Simultaneous Determination of Nitrite and Ascorbic Acid in Fruits and Vegetables by Differential Pulse Voltammetry

被引：0

作者：

Chen L. ^{[1
]}

Song J. ^{[1
]}

Wang L. ^{[1
]}

Yang X. ^{[1
]}

Zheng F. ^{[1
]}

Zhang J. ^{[1
]}

Zhang N. ^{[1
]}

机构：

[1] College of Food Engineering, Harbin University of Commerce, Harbin

来源：

Science and Technology of Food Industry | 2023年 / 44卷 / 05期

关键词：

ascorbic acid; differential pulse voltammetry; modified electrode; nitrite;

D O I：

10.13386/j.issn1002-0306.2022040260

中图分类号：

学科分类号：

摘要：

Hydroquinone (HQ) was used to catalyze Methanobactin (Mb) to reduce chlorauric acid to prepare Gold Nanoparticles (AuNPs). Mb@AuNPs was modified onto the surface of a bare gold electrode via electrodeposition to prepare the Mb@AuNPs/Au electrode. Subsequently, differential pulse voltammetry was conducted for the simultaneous determination of nitrite and ascorbic acid concentrations as well as condition optimization. For the electrode assembly, electrodeposition was performed with a 0.20 mol/L and pH6.5 PBS at a 100 mV/s scan rate for 40 cycles. In the linear range of 2~5600 μmol/L and 1~6000 μmol/L, the oxidation peak current of both nitrite and ascorbic acid detected by Mb@AuNPs/Au showed a good linear relationship with the concentration (R2>0.9928), and the limit of detection (LOD) was 0.31 and 0.57 μmol/L, respectively. The recovery rates of standard addition for the actual samples were 92.59%~ 109.26%, 90.01%~103.51%. The method has good reproducibility and stability and can be used for simultaneous determination of nitrite and ascorbic acid in fruits and vegetables. © 2023, Editorial Department of Science and Technology of Food Science. All rights reserved.

引用

页码：267 / 276

页数：9

共 40 条

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