Henry Setiyanto, Sabtin Maulidiyah Hani, Vienna Saraswaty, Indra Noviandri, Handajaya Rusli, Ria Sri Rahayu, Muhammad Yudhistira Azis, Nandang Mufti
In this paper, a simple and selective molecularly imprinted polymer film-based electrochemical sensor is made by electropolymerizing glycine in the presence of Sunset yellow (SY) as a template. The thin film electro-polymerization was characterized by cyclic voltammetry and square wave voltammetry. The optimization of important parameters, the removal of Sunset yellow from the developed electrode, analytical performance, and the analysis of a real sample are described. The results showed that the developed sensor is highly selective in the presence of interferents such as sodium chloride, glucose, benzoic acid, lemon yellow and tartrazine up to a 200-fold higher concentration. Under optimized conditions, the linear dynamic range was found to range from 2 to 100 μM, with LOD and LOQ values of 0.753 μM and 2.48 μM respectively. When the proposed sensor was used for the evaluation of a real sample (tomato sauce), a similar result was observed in comparison to high performance liquid chromatography evaluation, indicating the good reliability of our modified sensor. In summary, our proposed sensor is promising for the detection of SY in food products. © 2023 The Electrochemical Society (“ECS”). Published on behalf of ECS by IOP Publishing Limited
Analytical Chemistry Research Group, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Bandung, Indonesia; Research Center for Applied Microbiology, National Research and Innovation Agency Republic of Indonesia, KST Samaun Samadikun, Bandung, 40135, Indonesia; Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Malang, 65145, Indonesia