Recent advances in electrochemical approaches for detection of nitrite in food samples

• Published in: Food chemistry 2025-01, Vol.462, p.140962, Article 140962
• Main Authors: Ibrahim, Nora, Hefnawy, Mahmoud A., Fadlallah, Sahar A., Medany, Shymaa S.
• Format: Article
• Language: English
• Subjects: Carbon-based sensors; Electrochemical sensors; Electrochemical Techniques - instrumentation; Electrochemical Techniques - methods; Food Analysis - instrumentation; Food Analysis - methods; Food Contamination - analysis; Nitrite detection; Nitrites - analysis; Transition metal-based sensors
• ISSN: 0308-8146; 1873-7072; 1873-7072
• DOI: 10.1016/j.foodchem.2024.140962

Nitrite is a common ingredient in the industry and agriculture; it is everywhere, like water, food, and surroundings. Recently, several approaches have been developed to measure the nitrite levels. So, this review was presented as a summary of many approaches utilized to detect the nitrite. Furthermore, the types of information that may be acquired using these methodologies, including optic and electrical signals, were discussed. In electrical signal methods, electrochemical sensors are usually developed using different materials, including carbon, polymers, oxides, and hydroxides. At the same time, optic signals receiving techniques involve utilizing fluorescence chromatography, absorption, and spectrometry instruments. Furthermore, these methodologies' benefits, drawbacks, and restrictions are examined. Lastly, due to the efficiency and fast means of electrochemical detectors, it was suggested that they can be used for detecting nitrite in food safety. Futuristic advancements in the techniques used for nitrite determination are subsequently outlined. [Display omitted] •Nitrite detection via electrochemical methods.•Various modified electrodes for nitrite estimation.•Different materials made of polymers and carbon for nitrite detection.•Enzymatic detection of nitrite.•Nitrite identification in food samples.