Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Spectrally resolved absolute fluorescence cross sections for bacillus spores

Not Accessible

Your library or personal account may give you access

Abstract

Absolute fluorescence cross sections for Bacillus subtilis and B. cereus bacterial spores as both aqueous suspensions and aerosols were measured at a number of excitation wavelengths between 228 and 303 nm. The fluorescence was spectrally resolved at each excitation wavelength. We found that the optimum excitation wavelength for spore fluorescence is between 270 and 280 nm. The fluorescence cross section for aqueous suspensions is four times larger than for dry aerosols when measured under similar conditions. Measurements on wet aerosols showed an increase in fluorescence cross section over dry aerosols, indicating an enhancement of the fluorescence when the bacterial spores are wet. Mie scattering cross sections at 90° to the direction of the incident radiation and extinction cross sections as a function of wavelength for B. subtilis suspensions and fluorescence cross sections for tryptophan are also reported.

© 1997 Optical Society of America

Full Article  |  PDF Article
More Like This
Fluorescence cross sections of bioaerosols and suspended biological agents

Albert Manninen, Matti Putkiranta, Jaakko Saarela, Antti Rostedt, Tapio Sorvajärvi, Juha Toivonen, Marko Marjamäki, Jorma Keskinen, and Rolf Hernberg
Appl. Opt. 48(22) 4320-4328 (2009)

Changes in the luminescence between dried and wet bacillus spores

Joseph Kunnil, Barry Swartz, and Lou Reinisch
Appl. Opt. 43(28) 5404-5409 (2004)

Optical properties of Bacillus subtilis spores from 0.2 to 2.5 µm

P. S. Tuminello, E. T. Arakawa, B. N. Khare, J. M. Wrobel, M. R. Querry, and M. E. Milham
Appl. Opt. 36(13) 2818-2824 (1997)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved