Recent Advances in Electrochemical Sensors for Caffeine Determination

• Published in: Sensors (Basel, Switzerland) Vol. 22; no. 23; p. 9185
• Main Authors: Tasić, Žaklina Z, Petrović Mihajlović, Marija B, Simonović, Ana T, Radovanović, Milan B, Antonijević, Milan M
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 25-11-2022; MDPI
• Subjects: Beverages; Beverages - analysis; Caffeine; Caffeine - analysis; Carbon; Chemical sensors; differential pulse voltammetry; electrochemical sensor; Electrochemical Techniques - methods; Electrodes; Environmental protection; Graphene; Low concentrations; Measuring instruments; modifiers; Nanomaterials; Nanoparticles; Pharmaceuticals; real samples; Redox reactions; Review; Sensors; Surfactants; Israel; caffeine; real samples; differential pulse voltammetry; electrochemical sensor; modifiers
• ISSN: 1424-8220; 1424-8220
• DOI: 10.3390/s22239185

The determination of target analytes at very low concentrations is important for various fields such as the pharmaceutical industry, environmental protection, and the food industry. Caffeine, as a natural alkaloid, is widely consumed in various beverages and medicines. Apart from the beneficial effects for which it is used, caffeine also has negative effects, and for these reasons it is very important to determine its concentration in different mediums. Among numerous analytical techniques, electrochemical methods with appropriate sensors occupy a special place since they are efficient, fast, and entail relatively easy preparation and measurements. Electrochemical sensors based on carbon materials are very common in this type of research because they are cost-effective, have a wide potential range, and possess relative electrochemical inertness and electrocatalytic activity in various redox reactions. Additionally, these types of sensors could be modified to improve their analytical performances. The data available in the literature on the development and modification of electrochemical sensors for the determination of caffeine are summarized and discussed in this review.