Dc. Roselle et al., CHANGES IN INTRINSIC FLUORESCENCE DURING THE PRODUCTION OF VIABLE BUTNONCULTURABLE ESCHERICHIA-COLI, Journal of industrial microbiology & biotechnology, 20(5), 1998, pp. 265-267
The potential of intrinsic fluorescence spectroscopy to detect and dif
ferentiate viable but nonculturable bacteria in the presence of cultur
able bacteria was explored, Escherichia coli cells, starved for 210 da
ys in nutrient-free normal saline, show new fluorescence emissions nea
r 400 and 440 nm, and reduced emission near 340 nm.