Selenite F broth Salmonella color - (Oct/23/2012 )
Why salmonella give pink color to Selenite F Broth culture?
You can have a little red orange precipitate - not sure if it's Selenium oxide or sulfide - but probably not from any Salmonella.
Thanks for your reply. Does this precipitate could be expected in E.coli growing in Selenite F Broth after 24 hours.
If we subculture many times in selenite broth will that it be like selective media like Bismuth Sulfite agar?
Don't think there's anything special about a bacterium in re. the precipitate. You shouldn't see much growth of E. coli as the purpose of the medium is to enrich Samonella spp. (esp. S. typhi ) in the presence of coliforms. Color might even be associated with the medium ageing. Selenite medium is indeed selective