Rapid identification of both species and even specific strains of human pathogenic bacteria grown on standard agar have been achieved from the volatiles they produce using a disposable colorimetric sensor array in a Petri dish imaged with an inexpensive scanner. All ten strains of bacteria tested, including E. faecalis and S. aureus and their antibiotic resistant forms, were identified with 98.8% accuracy within 10 h, a clinically important timeframe. Furthermore, the colorimetric sensor arrays also prove useful as a simple research tool for the study of bacterial metabolism and as an easy method for the optimization of bacterial production of fine chemicals or other fermentation processes.

Rapid identification of bacteria with a disposable colorimetric sensing array

243rd National Meeting (2012)

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