01909naa a2200241 a 450000100080000000500110000800800410001902400560006010000170011624501140013326000090024730000140025652011890027065300230145965300320148265300170151470000170153170000210154870000200156970000150158970000180160477300450162221348262022-06-10       2021    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1021/acsfoodscitech.1c001732DOI1 aANDRE, R. S.  aNanocomposite-based chemiresistive electronic nose and application in coffee analysis.h[electronic resource]  c2021  a1464-1471  aThe demand for accurate and rapid quality inspection of agricultural and food products has progressively increased since it is one of the important key attributes in determining consumer preference. In this sense, electronic nose (e-nose) devices capable of capturing a “smellprint” of food products, combined to pattern recognition tools are advantageous for the discrimination of similar complex mixtures. The design of the sensing units composing the e-nose requires a judicious choice of materials with distinct selectivity and specificity for achieving outstanding performance. The present work reports on the development of an e-nose based on nanocomposites obtained by the combination of ZnO, In2O3, and ZnO/In2O3 nanoparticles with polypyrrole and poly(styrenesulfonate). The sensor array was composed by six sensing units, which were exposed to 17 coffee samples. The coffee samples were successfully discriminated by quality level with the aid of principal components analysis and Euclidian distances by dendrograms. Therefore, the sensor array made with nanocomposites is promising as an alternative tool for monitoring the quality and classification of coffee samples.  aConducting polymer  aSemiconductor nanoparticles  aSensor array1 aCAMPANER, K.1 aFACURE, M. H. M.1 aMERCANTE, L. A.1 aBOGUSZ, S.1 aCORREA, D. S.  tACS Food Science Technologygv. 1, 2021.