Nitrite biosensing via selective enzymes-a long but promising route

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The last decades have witnessed a steady increase of the social and political awareness for the need of monitoring and controlling environmental and industrial processes. In the case of nitrite ion, due to its potential toxicity for human health, the European Union has recently implemented a number of rules to restrict its level in drinking waters and food products. Although several analytical protocols have been proposed for nitrite quantification, none of them enable a reliable and quick analysis of complex samples. An alternative approach relies on the construction of biosensing devices using stable enzymes, with both high activity and specificity for nitrite. In this paper we review the current state-of-the-art in the field of electrochemical and optical biosensors using nitrite reducing enzymes as biorecognition elements and discuss the opportunities and challenges in this emerging market.

Original languageEnglish
Pages (from-to)11530-11555
Number of pages26
JournalSensors (Switzerland)
Issue number12
Publication statusPublished - 1 Dec 2010


  • Biosensors
  • Electrochemical transducers
  • Nitrite
  • Nitrite reductases


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