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A Printed Multicomponent Paper Sensor for Bacterial Detection.

ABSTRACT: We present a simple all-in-one paper-based sensor for E. coli detection using a composite ink made of a fluorogenic DNAzyme probe for bacterial recognition and signal generation, lysozyme that lyses whole bacterial cells, and pullulan/trehalose sugars that stabilize printed bioactive molecules. The paper sensor is capable of producing a fluorescence signal as a readout within 5?minutes upon contacting E. coli, can achieve a limit of detection of 100 cells/mL, in a variety of sample matrixes, without sample enrichment, and remains stable for at least 6 months when stored at ambient temperature. Therefore, this simple paper sensor provides rapid bacterial testing on site, and can be shipped and stored under ambient conditions to benefit users living in resource-limited regions.

SUBMITTER: Ali MM

PROVIDER: S-EPMC5615064 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature

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A Printed Multicomponent Paper Sensor for Bacterial Detection.

Ali M Monsur MM Brown Christine L CL Jahanshahi-Anbuhi Sana S Kannan Balamurali B Li Yingfu Y Filipe Carlos D M CDM Brennan John D JD

Scientific reports 20170926 1

We present a simple all-in-one paper-based sensor for E. coli detection using a composite ink made of a fluorogenic DNAzyme probe for bacterial recognition and signal generation, lysozyme that lyses whole bacterial cells, and pullulan/trehalose sugars that stabilize printed bioactive molecules. The paper sensor is capable of producing a fluorescence signal as a readout within 5 minutes upon contacting E. coli, can achieve a limit of detection of 100 cells/mL, in a variety of sample matrixes, wit ...[more]

PMID: 28951563

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