Transducers biosensor classification

Table 1 summarizes the international classification of enzymes. Classes EC1 and EC3 are the most widely used for the development of optical biosensors. Sometimes different enzymes and transducing schemes can be applied to the analysis of a single analyte and the best combination should be selected depending on the application. 

Strong ZA, Wang AW, McConaghy CF (2002) Hydrogel-actuated capacitive transducer for wireless biosensors. Biomed Microdevices 4(2) 97-103 Thevenot DR, Toth K, Durst RA, Wilson GS (2001) Electrochemical biosensors recommended definitions and classification. Biosens Bioelectron 16(1-2) 121-131 Tirrell M, Kokkoli E, Biesalski M (2002) The role of surface science in bioengineered materials. Surf Sci 500 61-83... 

A biosensor consists of three main elements a bioreceptor, a transducer, and a signal processing system (David et al., 2008). Biosensors can be classified by their bioreceptor or their transducer types. The classifications of biosensors based on bioreceptors and transducers are represented in Figure 1.2. 

Considering that molecular recognition generally uses well-defined reaction types and that the deletion method may be extremely varied, it is logical that biosensors should be classified primarily as a function of the bioreceptor used. However, a laboratory that only ever worics with enzymes, for example, could use a classification according to the transducer employed (electrochemical, thermometric, etc). In what follows, we have opted to use the classification by bioreceptor because this component determines the primary action of the biosensor. 

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