[ExpertScie]

Biofilms are places were microorganims are found in abundance. These are natural growth supporting sites. While in research and micro labs, various growth supporting culture media are prepared and used to enrich microorganims. Any microorganism needs growth medium to support their growth in vitro. Today there are many culture media available in market to grow wide variety of microbes. Here is overview of various types of media used to support microbial growth. There are mainly two types of growth media. One is cell culture. These are unique or specific cell types which are derived from various sources like plants or animals.
These cell cultures are used to grow bacteria, yeast and fungi. Out of many culture media, Nutrient broth is most common. These media are poured in Petri-plates which are also known as agar plates. While there are few very specific media used for growth of specific or defined microorganisms. These media is known as selective media. These media does not allow others to grow while favors the growth of selective microorganism under test.
Different organisms need different media. For example Microorganism named Fastidious needs specialized environmental for their growth due to their complex nutritional requirements. Another example is virus. They need host for their growth as they are intracellular obligatory parasite. They grow on cell culture may be of bacteria or animals.
Depending upon such requirements, type of growth media are classified as Nutrient media, Minimal media, Selective media, Differential media, Transport media, cryo based media (Required at very low temperature conditions e.g. like at minus 20 °C and above). Enriched media are used for propagation of organisms that is to grow organism under test luxuriously.
A blood agar plate contains blood and they support growth of specific organism and is used to detect infection. This way diagnosis of infectious agent is done and specified drugs or antibiotics are recommended for quicker relief or cure from diseases. Media are used to isolate, grow and store important microorganism.