I am culturing Bifidobacterium in MRS broth, all this while is showing result with white colored precipitate and clear supernatant after 3 days incubation (image 1). However, recently the culture was changed into turbid with precipitate at the bottom (image 2). It appear as a general cloudiness throughout the broth. I have performed some testing and showed that it is not contaminated by other bacteria. Does anyone have any idea on it?
Edited by Celz, 18 June 2015 - 10:54 PM.