Rhodamine B is used as a dye in foods and is fluorescent. Of the food dyes, Rhodamine B likely has the highest quantum yield in water and is relatively insensitive to pH changes near neutral (pH 4 to 10). Michael Kuhn, President Helix Research Fluorescence Chemistry http://www.helixresearch.com ----- Original Message ----- From: Jin Chung To: Cytometry Mailing List Sent: Tuesday, May 07, 2002 4:03 PM Subject: fluorochromes in food Does anyone knows whether there is any fluorecent dye that may be ok to be used in food, drinking water but also fluoresce? Jin Jin Chung Postgraduate Research Student School of Civil and Environmental Engineeing University of New South Wales Sydney NSW 2052 Australia Email: jin@civeng.unsw.edu.au
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