Recent advances in carbon nanomaterials-based electrochemical sensors for food azo dyes detection

Hassan Karimi-Maleh, Hadi Beitollahi, P. Senthil Kumar, Somayeh Tajik, Peyman Mohammadzadeh Jahani, Fatemeh Karimi, Ceren Karaman, Yasser Vasseghian, Mehdi Baghayeri, Jalal Rouhi, Pau Loke Show, Saravanan Rajendran, Li Fu, Najmeh Zare

Research output: Contribution to journalArticlepeer-review

300 Scopus citations


Azo dyes as widely applied food colorants are popular for their stability and affordability. On the other hand, many of these dyes can have harmful impacts on living organs, which underscores the need to control the content of this group of dyes in food. Among the various analytical approaches for detecting the azo dyes, special attention has been paid to electro-analytical techniques for reasons such as admirable sensitivity, excellent selectivity, reproducibility, miniaturization, green nature, low cost, less time to prepare and detect of specimens and the ability to modify the electrode. Satisfactory results have been obtained so far for carbon-based nanomaterials in the fabrication of electrochemical sensing systems in detecting the levels of these materials in various specimens. The purpose of this review article is to investigate carbon nanomaterial-supported techniques for electrochemical sensing systems on the analysis of azo dyes in food samples in terms of carbon nanomaterials used, like carbon nanotubes (CNT) and graphene (Gr).

Original languageBritish English
Article number112961
JournalFood and Chemical Toxicology
StatePublished - Jun 2022


  • Azo dyes
  • Carbon nanomaterials
  • Carbon nanotubes
  • Electrochemical sensor
  • Food analysis
  • Graphene


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