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What color would non pathogenic staphylococcus epidermidis agar be after the growth of the bacteria?
Wiki User
∙ 13y ago
Well it depends on which type of agar preparation you use.
For example, if you use a mannitol NaCl salt agar it'll contain a red phenol dye which is a pH indicator. If a microbe is pathogenic it'll ferment the mannitol into acids which turn the red indicator yellow. Non-pathogenic bacteria such as S. epidermidis will not ferment the mannitol and so no colour change will result.
Wiki User
∙ 13y ago
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Where to find non pathogenic freeze dried staph bacteria with growth medium?
Freeze-dried staphylococcus epidermis bacteria (non-pathogenic) where to buy
Why do fruits undergo mould and yeast spoilage rather than bacterial spoilage?
Most fruits are acidic and tend not to support the growth of pathogenic bacteria. Molds and yeasts like acidic environments.
What is an Antimicrobial?
An antimicrobial is an agent which destroys microbes or inhibits their growth, or prevents or counteracts their pathogenic action.
What effect does Mercurochrome have on bacteria?
It will affect the growth of the bacteria.
What bacteria are required for plant growth?
Symbiotic bacteria
Where to find non pathogenic freeze dried staph bacteria with growth medium?
Freeze-dried staphylococcus epidermis bacteria (non-pathogenic) where to buy
are Antibiotics are useful for limiting the growth of most pathogenic bacteria?
no, many bacteria have become resistant due to improper use of antibiotics.
What are the MacConkey test results for s epidermidis?
There is no growth because S.Epidermidis is a gram positive bacteria. MacConkey selects for gram negatives. the bile salts and crystal violet inhibit gram positive growth in the medium
What are the three types of hemolysis bacteria can exhibit?
1. Alpha- which will appear on a blood agar plate with a slightly greenish growth. 2. Beta- will appear as growth which obvious lysis surrounding the bacteria. 3. Gamma- appears as just a slightly yellow growth
Is staphylococcus epidermidis positive for nitrogen reduction?
yes. it is a weak positive for this test though. Better idea for identification would be to run some fermentation tests, like mannitol, sucrose, trehalose and mannose. after you have done some type of growth on salt agar and tested its susceptibility to novobiocin and perhaps lysostaphin.
What the purpose of mannitol salt?
The purpose is to select for salt-tolerant microbes. Most species of microbes can't grow in such a salty environment. The only genus that can culture on an MSA plate is Staphylococcus. The only species of Staphylococcus that can ferment Mannitol is Staph. Aureus. If the plate turns yellow, you know that Mannitol was fermented into an acid, which only Staph. Aureus can do. If there is a little growth (aka the culture is red) then it's still most likely a species of Staph such as Staph. epidermidis. If there is no growth, as in E. coli, then there will be no culture and no change in color.
How can heavy growth of staphylococcus aureus be treated?
There are several ways that heavy growth of staphylococcus aureus can be treated. Some medicines used are methicillin, nafcillin, oxacillin, cloxacillin, dicloxacillin, and flucloxacillin.
What drug inhibits the growth or pathogenic organism?
Antibiotics are one of them
Does Staphylococcus grow on non crystal violet MacConkey agar?
Staphylococcus will not grow on Mac since crystal violet inhibits the growth of Gram positivesfmchinea: Actually some species of staphylococcus grow on MacConkey's plate including Staphylococcus aureus.
Why do fruits undergo mould and yeast spoilage rather than bacterial spoilage?
Most fruits are acidic and tend not to support the growth of pathogenic bacteria. Molds and yeasts like acidic environments.
What is degenerative spurring?
The pathogenic growth of bony extensions of the foot/ heel
Process that inhibits or prevents the growth of pathogenic organisms?
ghfch
