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10 February 1999 Microbial analysis using Sharma's reaction
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Proceedings Volume 3534, Environmental Monitoring and Remediation Technologies; (1999)
Event: Photonics East (ISAM, VVDC, IEMB), 1998, Boston, MA, United States
The photoreaction of thionine with NAD(P)H leads to the formation of non-fluorescent semi and lecuothionine. This has been previously used for the development of enzymatic assays. We show that the fluorescence of thionine is quenched in the presence of Nocardia corallin. We ascribe this decrease in fluorescence to the presence of NAD(P)H present on the walls and in the body of the cells as described by Sharma. We therefore demonstrate that it is possible to measure, in situ, NAD(P)H in Nocardia corallin in a simple and inexpensive manner and that this finding extends the analytical application of Sharma's reaction to other organisms.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zulfiqur Ali, Bruce Hodson, James Timmins, and Stephen Keith "Microbial analysis using Sharma's reaction", Proc. SPIE 3534, Environmental Monitoring and Remediation Technologies, (10 February 1999);


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