您好，欢迎访问广西农业科学院 机构知识库！

A novel electrochemical aptasensor based on polyaniline and gold nanoparticles for ultrasensitive and selective detection of ascorbic acid

文献类型： 外文期刊

作者： Jiang, Cuiwen 1 ; Xie, Liping 1 ; Yan, Feiyan 1 ; Liang, Zhongdan 1 ; Liang, Jing 1 ; Huang, Kejing 2 ; Li, Huiling 1 ; Wang, Yanli 1 ; Luo, Lihong 1 ; Li, Tao 1 ; Ning, Dejiao 1 ; Tang, Li 1 ; Ya, Yu 1 ;

作者机构： 1.Guangxi Acad Agr Sci, Inst Agr Prod Qual Safety & Testing Technol, Nanning 530007, Peoples R China

2.Guangxi Univ Nationalities, Sch Chem & Chem Engn, Nanning, Peoples R China

期刊名称：ANALYTICAL METHODS （ 影响因子：3.1； 五年影响因子：3.0 ）

ISSN： 1759-9660

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Ascorbic acid (AA) is involved in many physiological activities of the body and plays an important role in maintaining and promoting human health. It is also present in many natural and artificial foods. Therefore, the development of highly sensitive and accurate AA sensors is highly desirable for human health monitoring, as well as other commercial application fields. Herein, an ultrasensitive and selective electrochemical sensor based on an aptamer was developed for the determination of AA for the first time. The aptasensor was fabricated by modifying a composite made of polyaniline (PANI) and gold nanoparticles (AuNPs) on a glassy carbon electrode. The morphologies and electrochemical properties of the resulting electrodes were characterized by various analytical methods. The results indicated relatively good electrical conduction properties of PANI for accelerated electron transfer. The modification with AuNPs provided signal amplification, suitable for applications as novel platforms for the sensitive sensing of AA. Under optimized conditions, the proposed aptasensor displayed a wide linear response toward the detection of AA from 1.0 to 1.0 x 10(5) ng L-1 coupled with a low detection limit of 0.10 ng L-1. The sensor also exhibited excellent selectivity and high stability, with at least 2000-fold higher sensitivity than similar previously reported methods. Importantly, the aptasensor exhibited promising properties for the determination of AA in real fruits, vegetables, and infant milk powder, thereby showing potential for food analysis.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：广西农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台