A bioelectronic sensor based on canine olfactory nanovesicle-carbon nanotube hybrid structures for the fast assessment of food quality

Juhun Park, Jong Hyun Lim, Hye Jun Jin, Seon Namgung, Sang Hun Lee, Tai Hyun Park, Seunghun Hong

Research output: Contribution to journalArticlepeer-review

68 Scopus citations

Abstract

We developed an olfactory-nanovesicle-fused carbon-nanotube-transistor biosensor (OCB) that mimics the responses of a canine nose for the sensitive and selective detection of hexanal, an indicator of the oxidation of food. OCBs allowed us to detect hexanal down to 1 fM concentration in real-time. Significantly, we demonstrated the detection of hexanal with an excellent selectivity capable of discriminating hexanal from analogous compounds such as pentanal, heptanal, and octanal. Furthermore, we successfully detected hexanal in spoiled milk without any pretreatment processes. Considering these results, our sensor platform should offer a new method for the assessment of food quality and contribute to the development of portable sensing devices.

Original languageEnglish (US)
Pages (from-to)3249-3254
Number of pages6
JournalAnalyst
Volume137
Issue number14
DOIs
StatePublished - Jul 21 2012

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