Culture Types Of Agar Plates

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.

Culture types of agar plates.

In the above picture of a mixed culture an agar plate that has been exposed to the air and many different colony morphologies can be identified. Specifically it is a streak plate. Baps are enriched differential media used to isolate fastidious organisms and detect hemolytic activity. The orange lines and dots are formed by bacterial colonies.

Blood agar plates baps contain mammalian blood usually sheep or horse typically at a concentration of 5 10. Agar plates come with many different types of media or nutrients depending on the microorganism you want to culture. The basic process for doing this is to mix up a nutrient rich agar solution pressure sterilize it and then pour the mix onto sterile dishes in a clean environment. Agar plates are the standard solid support material for growing microorganisms.

Blood agar plates blood agar plates bap are made by adding five to ten percent sheep or horse blood to the nutrient medium. Examples include streptococcus haemolyticus. You can buy nutrient agar powder and sterile petri dishes and prepare nutrient agar plates by yourself. Microbial growth media contains nutrients and an energy source to fuel the microbes as they grow and agar to keep the media in a semi solid gel like state.

Starting with sterilized agar plates. Some colony types recur in various areas of the plate note 3 and 4. But it takes time and kind of messy and sometimes you can screw up your project. β hemolytic activity will show lysis and complete digestion of red blood cell contents surrounding a colony.

An agar plate an example of a bacterial growth medium. We have premade or called pre prepared nutrient agar plates made with sterile petri dishes at very affordable. On solid media a single microbe will grow and divide to produce a colony a spot of identical descendants.