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Aseptic techniques are used to maintain microbiological cultures and to prevent contamination of the growth medium. There are many different types of methods used to streak a plate. Picking a technique is a matter of individual preference and can also depend on how large the number of microbes the sample contains.
One technique is known as "streaking". In this technique, a drop of the culture on the end of a thin, sterile loop of wire, sometimes known as an inoculator, is streaked across the surface of the agar leaving organisms behind, a higher number at the beginning of the streak and a lower number at the end. At some point during a successful "streak ...
The technique involves pressing a velveteen-covered disk, and then imprinting secondary plates with cells in colonies removed from the original plate by the material. Generally, large numbers of colonies (roughly 30-300) are replica plated due to the difficulty in streaking each out individually onto a separate plate.
The streak plate method is a way to physically separate the microbial population, and is done by spreading the inoculate back and forth with an inoculating loop over the solid agar plate. Upon incubation , colonies will arise and single cells will have been isolated from the biomass .
Aseptic technique is then applied to the withdrawn inoculation needle. Plate culture. Inoculation of a plate culture is done through the streaking technique to make a streak plate. [1] [2] [4] After lifting the lid so that it hovers above the sterile agar plate, the inoculation needle will be streaked across the plate in controlled directions. [1]
Streak plate may refer to: In streaking (microbiology), the plate used to incubate a culture and isolate a pure strain; In streak (mineralogy), the plate used to ...
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An agar plate – an example of a bacterial growth medium*: Specifically, it is a streak plate; the orange lines and dots are formed by bacterial colonies.. A growth medium or culture medium is a solid, liquid, or semi-solid designed to support the growth of a population of microorganisms or cells via the process of cell proliferation [1] or small plants like the moss Physcomitrella patens. [2]