Selective Media List

The selectivity is accomplished in several ways.

Selective media list. Selective media those culture media that permits the required bacterium to grow and selectively inhibit unwanted commensals and contaminants are termed selective media. It is not selective and will grow many different types of microbes. Differential media typically display some type color change in the presence of certain bacteria. Bap is rich in nutrients and contains sheep blood.

The key difference between selective media and differential media is that selective media are used to grow and isolate a specific type of microorganism by suppressing the growth of other microorganisms while differential media are used to visually distinguish microorganisms from one another. Now let s have a discussion on some of the selective media. The non selective media on the right allows of the growth of several different bactarial species and is overgrown with bacteria whitish lines. Coli unable to synthesize it.

Differential media are used to identify and differentiate closely related microorganisms. Selective media provide immediate feedback on how an organism s cells interact with any controlled chemical or substance introduced into the media. Some examples of selective media include. Moreover selective inhibition can also be made by the addition of some dyes salts or some specific inhibitors.

For example if the introduction of an antibiotic such as ampicillin destroys or otherwise agitates the growing cells scientists can reasonably conclude that the cells react adversely to ampicillin. Non selective versus selective media. Selective media and differential media are two important and commonly used media types among them. Selective media use specific growth characteristics of a particular microorganism to select it from.

Selective media are used to isolate a particular strain of microorganisms. While the plate on the right selectively only allows the bacteria neisseria gonorrhoeae to grow white dots. Blood agar bap is another type of differential medium. Selective media for isolation of bacillus anthracis from soil and other medium materials containing numerous spore formers of other species polymyxin b neomycin fusidic acid media pnf selective media for s.

Selective media are used for the growth of only selected microorganisms. Pyogenes or β hemolytic streptococcus pplo medium contains sterol. Deoxycholate citrate agar dca is a selective medium that is utilized for isolation of some pathogens include salmonella and shigella species. Blood agar medium is however differential.

For example if a microorganism is resistant to a certain antibiotic such as ampicillin or tetracycline then that antibiotic can be added to the medium to prevent other cells which do not possess the resistance from growing media lacking an amino acid such as proline in conjunction with e.