Seattle, WA, United States
Seattle, WA, United States

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Kubota R.,University of Hawaii at Manoa | LaBarre P.,Technical Officer Portfolio Leader | Singleton J.,Product Development Technician | Beddoe A.,Product Development Officer | And 2 more authors.
Biological Engineering Transactions | Year: 2011

We report on the use of a non-instrumented device for the implementation of a loop-mediated amplification (LAMP) based assay for the select-agent bacterialwilt pathogen Ralstonia solanacearum race 3 biovar 2. Heat energy is generated within the device by the exothermic hydration of calcium oxide, and the reaction temperature is regulated by storing latent energy at the melting temperature of a renewable lipid-based engineered phase-change material. Endpoint detection of the LAMP reaction is achieved without opening the reaction tube by observing the fluorescence of an innovative FRET-based hybridization probe with a simple custom fluorometer. Non-instrumented devices could maintain reactions near the design temperature of 63°C for at least an hour. Using this approach DNA extracted from the pathogen could be detected at fewer than ten copies within a 25 μL reaction mix, illustrating the potential of these technologies for simple, powerful agricultural diagnostics in the field. Furthermore, the assay was just as reliable when implemented in a tropical environment at 31°C as it was when implemented in an air-conditioned lab maintained at 22°C, illustrating the potential value of the technology for field conditions in the tropics and subtropics. © 2011 ASABE ISSN.


PubMed | University of Hawaii at Manoa, Professor, Center for for Global Health and Leader Technologies
Type: Journal Article | Journal: Biological engineering transactions | Year: 2014

We report on the use of a non-instrumented device for the implementation of a loop-mediated amplification (LAMP) based assay for the select-agent bacterial-wilt pathogen

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