Figure 2.

Proteins interacting with volatile organic compounds (VOCs) in the human nose (a) and examples of olfactory sensors designed from biosourced materials (b). Trace amine associated receptors (TAAR) in lipidic nanodiscs grafted on a field-effect transistor for the detection of cadaverine (adapted from [15]). (c) Three different kind of odorant binding proteins (OBPs) deposited on surface acoustic wave sensors for carvone sensing (adapted from [16]). (d) Optical sensor for ethanol based on an alcohol dehydrogenase membrane [17].