חיידקים
Bacteria
Photo: Shutterstock
Bacteria

Israeli scientists invent artificial ‘nose’ for detecting bacteria

Ben-Gurion University researchers say technology could have many potential uses including food quality control, detection of poisonous gases, assisting in lab work and environmental monitoring

TPS |
Published: 06.20.21, 22:23
A multidisciplinary team of Ben-Gurion University of the Negev scientists has invented an artificial nose that detects a variety of bacteria.
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  • There are numerous potential applications for an artificial nose capable of continuous bacterial monitoring – an accomplishment that was deemed elusive until now.
    2 צפייה בגלריה
    חיידקים
    חיידקים
    Bacteria
    (Photo: Shutterstock)
    “We invented an artificial nose based on unique carbon nanoparticles (“carbon dots”) capable of sensing gas molecules, particularly detecting bacteria through the volatile metabolites they emit to the air,” said lead researcher Professor Raz Jelinek.
    The artificial nose uses chemical reactions and electrodes to “smell” bacteria. Technically, it records the capacitance changes induced upon binding vapor molecules onto interdigitated electrodes (IDEs) coated with carbon dots exhibiting different polarities.
    Machine learning can train the sensor to identify different gas molecules, individually or in mixtures, at high accuracy.
    2 צפייה בגלריה
    Raz Yelink and Ph.D. student Nitzan Shauloff
    Raz Yelink and Ph.D. student Nitzan Shauloff
    Prof. Raz Yelink and Ph.D. student Nitzan Shauloff
    (Photo: Ben Gurion University)
    Some of the potential applications include food quality – detecting spoiled food; identifying bacteria in hospitals and public buildings; disease diagnostic tests through breath; speeding up testing of lab samples; identifying “good” vs. pathogenic bacteria in the microbiome; identifying poisonous gases, and environmental monitoring.
    Other researchers on the team included: Ph.D. student Nitzan Shauloff, Dr. Ahiud Morag, Dr. Seema Singh, and Ravit Malishev of the Department of Chemistry and Prof. Lior Rokach, Chair of the Department of Software and Information Systems Engineering.
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