Sensing by Smell: Nanoparticle-Enzyme Sensors for Rapid and Sensitive Detection of Bacteria with Olfactory Output

Duncan B., Le N. D. B. , Alexander C., Gupta A., Tonga G. Y. , Yazdani M., ...Daha Fazla

ACS NANO, cilt.11, sa.6, ss.5339-5343, 2017 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 11 Konu: 6
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1021/acsnano.7b00822
  • Dergi Adı: ACS NANO
  • Sayfa Sayıları: ss.5339-5343


We present here a highly efficient sensor for bacteria that provides an olfactory output, allowing detection without the use of instrumentation and with a modality that does not require visual identification. The sensor platform uses nanoparticles to reversibly complex and inhibits lipase. These complexes are disrupted in the presence of bacteria, restoring enzyme activity and generating scent from odorless pro-fragrance substrate molecules. This system provides rapid (15 min) sensing and very high sensitivity (10(2) cfu/mL) detection of bacteria using the human sense of smell as an output.