these media contain substances that accelerate the growth of required pathogens only and prevent or slow down the growth of other microorganisms.
example: XLD agar: it is used for the growth of salmonellae and shiggellae. the bile salts present in this media prevent the growth of many fecal commensals.
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Difference of enrichment media and selective media?
A Selective media contains antimicrobial agents to inhibit the growth of certain microbes. An Enrichment Media stimulates the growth of certain bacteria or they may even supress the growth of other for the isolation of the desired bacteria.
Is Trypticase soy agar a general-purpose growth media or a more specific selective and differential media?
It is a general-purpose growth media.
Which type of culture media is best for the growth of most chemoheterotrophic organisms?
selective media
What is selective media?
Selective media, is made up of certain nutrients that can either inhibit or enhance the growth of certain bacteria and or fungus. This is why they call it selective media, it is generally only selective for one kind of bacteria or does certain things when that bacteria or fungus is present.
Selective and differential media?
Selective media is designated for the growth of one type of organism. Differential media is like blood agar, which is an organism in itself, but seeks to destroy another one (hemoglobin).
Difference between selective media and differential media?
a media is known selective when we add some growth factor for specific type of organisms which are needed, which give support to grow for them only.. and differential media is one in which we can get the differentiated organisms both growing.
What is non selective media?
Non-selective is when we use agar for bacterial growth in general. Mean not to differentiate between them but just to see their colonies and growth. TSA and Chocolate agar are nonselective.
What selective growth media is best suited for isolation of coliform bacteria?
MacConkey's agar is a selective growth media that is best suited for isolation of coliform bacteria. This bacterial is red and is gram negative. The agar plate inhibits the growth of gram positive organisms and allows gram negative organisms to grow.
Give Enriched and selective media in microbiology?
enriched media contains complex mixtures of molecules and nutrients needed for growth for example LB media is a commonly used rich media containing salt (NaCl), tryptone and yeast extract. another example would be blood agar a selective media would normally be used to describe one containing a rich media such as LB, with the addition of a selective agent such as an antibiotic for example LB with ampicillin is a selective media.
What is the media selective for fungal organism?
potato dextrose agar medium is used for fungal growth
How many types of media?
Culture medium or growth medium is a liquid or gel designed to support the growth of microorganisms. These are classified into six types: (1) Basal media, (2) Enriched media, (3) Selective (4) Indicator media, (5) Transport media, and (6) Storage media.
What is a selective-differential media in microbiology?
Selective media favor the growth of particular microorganisms. Bile salt or dye like basic fuschin and crystal violet favor the growth of gram-negative bacteria by inhibiting the growth of gram positive bacteria. Maconkey agar is widely used to grow E.coli and related bacteria. Differential media are media that distinguish among different groups of microbes and even permit tentative identification of microorganisms based on their biological characterstics. Blood agar is used to culture of bacteria from human throat. Mckoney agar is both differential and selective media.
Is the media for oxidase test selective or differential?
media used for oxidase test is non selective media
What are the 5 types of media?
Culture medium or growth medium is a liquid or gel designed to support the growth of microorganisms. These are classified into six types: (1) Basal media, (2) Enriched media, (3) Selective (4) Indicator media, (5) Transport media, and (6) Storage media.
Why blood agar medium producing less contamination?
as it is a selective media for streptococci it inhibits the growth of other bacteria.
What is the principle of selective media?
Scientists in a lab use selective media and differential media to identify or isolate organisms. Selective media allows only certain types of organisms to grow.
What Different between enriched and enrichment media?
I'm not sure, but i think enriched media contain substances that enhance the growth of most bacteria, like blood agar which enhance the growth of most bacteria, while enrichment media contain a substance that's specially formulated to enhance the growth of some bacteria. Not like selective media which inhibit the growth of most bacteria except the selected ones.
What is media culture?
Culture medium or growth medium is a liquid or gel designed to support the growth of microorganisms. These are classified into six types: (1) Basal media, (2) Enriched media, (3) Selective (4) Indicator media, (5) Transport media, and (6) Storage media. 1. BASAL MEDIA. Basal media are those that may be used for growth (culture) of bacteria that do not need enrichment of the media
What are the three main types of microbiological culture media?
Culture medium or growth medium is a liquid or gel designed to support the growth of microorganisms. These are classified into six types: (1) Basal media, (2) Enriched media, (3) Selective (4) Indicator media, (5) Transport media, and (6) Storage media.
Which culture media is generally used for the growth of fungi?
Sabouraud Agar is used as a selective media to isolate yeasts and molds. generally, use a complex kind of media, involving plant or animal extracts.
Types of culture media?
These are classified into six types: (1) Basal media, (2) Enriched media, (3) Selective (4) Indicator media, (5) Transport media, and (6) Storage media. 1. BASAL MEDIA. Basal media are those that may be used for growth (culture) of bacteria that do not need enrichment of the media
Is a tsa agar selective or differential?
its a selective media
Why are crystal violet agar 7.5 sodium chloride agar considered selective media?
7.5% NaCl inhibits growth of certain bacteria. This type of selective media allows for the growth of Staph. A high concentration of NaCl alters the osmotic balance between the media and the bacterium, NaCl plasmolyzes the bacterium due to the hypertonicity of the medium. The circular shape of Staph allows it to better resist plasmolysis. Crystal Violet is a dye that inhibits the growth of certain Gram-positive bacteria, it does this by binding to the thick peptidoglycan layer preventing cross-linking and thus preventing cell growth.
How could the use of a medium which is both selective and differential be justified?
The use of a medium that is both selective and differential can be justified in a few ways. They allowe the growth of organisms that can be of interest. The media can also be quite useful diagnostically in medical settings.
Which selective medium is used for Trichoderma viridea to grow?
No medium exists for the selective growth of particular Trichoderma species, i.e. unless a pure spore culture is used of T. viride, one won't be able to select for it specifically using growth media. You can however, use a Trichoderma Selective Medium (TSM) to suppress growth of other fungi/bacteria and obtain Trichoderma colonies that can then be differentiated by morphology. Once a pure culture is obtained, subs can then be made onto various media such as potato dextrose agar (PDA), malt extract agar (MEA) on which Trichoderma will happily grow profusely and sporulate. TSM suppresses fungal growth making Trichoderma colonies grow very slowly, so this not a good media to use if sporulation is the objective.
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