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Q: What is the colony colour of bacillus on Msa agar?
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Does bacillus subtilis ferment acid from mannitol salt agar?

In my result i isolate bacillus sp on mannitol salt agar but i expect that this media has deoration or expaired


Can bacillus subtilis grow on msa?

yes It can, because MSA grows gram positive bacteria.


Can bacillus megaterium grow in MSA plates?

yes


Can Streptococcus grow on MSA?

MSA stands for mannitol salt agar. Streptococcus can not grow on this type of agar. This is because it has a very high salt content, which allows only certain microorganisms to grow in it.


Can enterobacter aerogenes grow on mannitol salt agar?

the bacteria dont ferment in MSA, there is no growth on the plat


Does micrococcus luteus grow on msa plates?

Yes micrococcus luteus, along with micrococcus roseus both grow on MSA. But, they do not fermente on this agar giving a negative test. However, Staphylococcus aureus grows on MSA and fermentes giving a positive test. *Side note* MSA plate is used to test for G+ coccus. The plate contains salt and salt "loving" bacteria will grow and show yellow colony, example of S. aureus.


What is MSA agar?

Mannitol salt agar or MSA is a commonly used growth medium in microbiology. It contains a high concentration (~7.5%-10%) of salt (NaCl), making it selective for Staphylococci (and Micrococcaceae) since this level of NaCl is inhibitory to most other bacteria.


Does E. faecalis test positive for MSA agar test?

yes it will ferment the mannitol and cause yellow color change.


Pseudomonas aeruginosa grows on which agar?

yesTypically, MSA is used to isolate and differentiate various staphylcocci, some of which are pathogenic, like S. aureus, or non pathogenic like S. epidermidis. Staph are the only kind of bacteria that will grow on MSA. S. aureus is the only staph that ferments manitol. Meaning, MSA can be used to isolate pathogenic from non-pathogenic staph.source: biology major


Can Klebsiella pneumoniae grow on Mannitol salt agar?

No, K. pneumoniae will not grow on Mannitol Salt Agar- gram negative organisms cannot grow on MSA, and K. pneumoniae is gram negative.


Did lactobacillus grow on mannitol salt agar?

Yes. M. smegmatis is a gram + bacteria, and MSA plates select for gram + bacteria.


You observe growth on your MSA agar plate but it didnt turn it yellow as it should with S.aureas What could have gone wrong?

it could have been contaminated.