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A surface acoustic wave bio-electronic nose for detection of volatile odorant molecules.

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Title: A surface acoustic wave bio-electronic nose for detection of volatile odorant molecules.
Authors: Di Pietrantonio, F.1 fabio.dp@idasc.cnr.it, Benetti, M.1, Cannatà, D.1, Verona, E.2, Palla-Papavlu, A.3,4, Fernández-Pradas, J.M.3, Serra, P.3, Staiano, M.5, Varriale, A.5, D’Auria, S.5
Source: Biosensors & Bioelectronics. May2015, Vol. 67, p516-523. 8p.
Subjects: Surface acoustic wave sensors, Bioelectronics, Electronic noses, Olfactory receptors, Carrier proteins, Interdigital transducers, Food contamination
Abstract: In this work, a “bio-electronic nose” for vapour phase detection of odorant molecules based on surface acoustic wave (SAW) resonators is presented. The biosensor system is composed of an array of five SAW resonators coated with three types of odorant-binding proteins (OBPs): the wild-type OBP from bovine (wtbOBP), a double-mutant of the OBP from bovine (dmbOBP), and the wild-type OBP from pig (wtpOBP). High resolution deposition of OBPs onto the active area of SAW resonators was implemented through laser-induced forward transfer (LIFT). The resonant frequency shifts of the SAW resonators after the deposition of the biomolecules confirmed the immobilisation of the proteins onto the Al/Au inter-digital transducers (IDTs). In addition, a low increase of insertion losses with a limited degradation of Q-factors is reported. The “bio-electronic nose” fabricated by LIFT is tested in nitrogen upon exposure to separated concentrations of R-(–)-1-octen-3-ol (octenol) and R-(–)-carvone (carvone) vapours. The “bio-electronic nose” showed low detection limits for the tested compounds (i.e. 0.48 ppm for the detection of octenol, and 0.74 ppm for the detection of carvone). In addition, the bio-sensing system was able to discriminate the octenol molecules from the carvone molecules, making it pertinent for the assessment of food contamination by moulds, or for the evaluation of indoor air quality in buildings. [ABSTRACT FROM AUTHOR]
Copyright of Biosensors & Bioelectronics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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AccessLevel: 6
PubType: Academic Journal
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  Data: A surface acoustic wave bio-electronic nose for detection of volatile odorant molecules.
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  Data: In this work, a “bio-electronic nose” for vapour phase detection of odorant molecules based on surface acoustic wave (SAW) resonators is presented. The biosensor system is composed of an array of five SAW resonators coated with three types of odorant-binding proteins (OBPs): the wild-type OBP from bovine (wtbOBP), a double-mutant of the OBP from bovine (dmbOBP), and the wild-type OBP from pig (wtpOBP). High resolution deposition of OBPs onto the active area of SAW resonators was implemented through laser-induced forward transfer (LIFT). The resonant frequency shifts of the SAW resonators after the deposition of the biomolecules confirmed the immobilisation of the proteins onto the Al/Au inter-digital transducers (IDTs). In addition, a low increase of insertion losses with a limited degradation of Q-factors is reported. The “bio-electronic nose” fabricated by LIFT is tested in nitrogen upon exposure to separated concentrations of R-(–)-1-octen-3-ol (octenol) and R-(–)-carvone (carvone) vapours. The “bio-electronic nose” showed low detection limits for the tested compounds (i.e. 0.48 ppm for the detection of octenol, and 0.74 ppm for the detection of carvone). In addition, the bio-sensing system was able to discriminate the octenol molecules from the carvone molecules, making it pertinent for the assessment of food contamination by moulds, or for the evaluation of indoor air quality in buildings. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Biosensors & Bioelectronics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.bios.2014.09.027
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        Text: English
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        PageCount: 8
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      – SubjectFull: Surface acoustic wave sensors
        Type: general
      – SubjectFull: Bioelectronics
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      – SubjectFull: Electronic noses
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      – SubjectFull: Food contamination
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