We use malt extract agar with addition of 5 % tartaric acid to adjust the pH more acidic for yeast &mold counts (suppress the growth of the bacterial flora). The colonies formed in this medium were as in the image. What can we think about the white non-uniform growth in this medium? We would be very happy if you could share your experience.
This looks like 'mucous-producing anaerobic bacteria'. Such an experience I had in past while culturing lactobacilli.
The non-uniform colonies looks like culture of exopolysaccharide producing Leuconostoc spp. or Weissella spp.
You must check it by gram's staining and/or other standard tests.
Good luck,
Dr A K Dubey
Thanks for your responses. All the points you mentioned are important for my research. Ashwini Kumar Dubey Phil Geis
Actually, the possibility of being bacterial and acid resistance were important Phil Geis
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