Volume 90 Issue 19 | p. 29 | Concentrates
Issue Date: May 7, 2012

Fruit Ripeness Detected Via Nanotube

MIT researchers develop carbon nanotube-based sensor that measures concentrations of ethylene, a ripeness indicator, as low as 0.5 ppm
Department: Science & Technology
News Channels: Analytical SCENE, Biological SCENE
Keywords: chemical sensing, ethylene, fruit, ripening, carbon nanotubes, gas detection

Rather than using expensive gas chromatography and mass spectrometry systems to monitor the freshness of their fruit, food distributors of the future might instead use low-cost carbon nanotube-based sensors. That’s because MIT researchers Timothy M. Swager, Birgit Esser, and Jan M. Schnorr have developed a device that detects fruit maturity by measuring levels of emitted ethylene, a plant hormone that initiates ripening (Angew. Chem. Int. Ed., DOI: . . .

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