Microbial cultures are foundational and basic diagnostic methods used extensively as a research tool in molecular biology. It is often essential to isolate a pure culture of microorganisms. A pure (or axenic) culture is a population of cells or multicellular organisms growing in the absence of other species or types. Explore the latest articles, projects, and questions and answers in Microbial Culture, and find Microbial Culture experts. A growth or a culture medium is composed of different nutrients that are essential for microbial growth—here are some that are used in.


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Avoid passaging and subculturing microbial strains too many times.

Microbiological Culture

Many microbial culture cultures, particularly bacterial strains, quickly succumb to genetic drift, often resulting in major phenotypic changes. Multiple passages of a strain can increase the risk of genetic drift microbial culture well as the potential for contamination.

Starting fresh microbial cultures from preserved, low-passaged stocks is recommended rather than continual subculturing. Inspect cultures daily for signs of cross-contamination.

The microscale cell cultures have not only given us glimpses into the microbial wonderland but also have spawned technological innovations for many practical applications. In this article, we present a survey of the current status of microscale microbial culture, and speculate what the immediate future may hold.

Microscale cell culture platforms The success of microscale cell culture can be attributed to innovative and clever adaptation of engineering achievements to traditional microbiology including microfabrication, robotics, imaging and analytical tools.

Microbiological culture - Wikipedia

We briefly describe here two most widely used techniques for microscale cell culture, and interested readers are referred to extensive reviews [ 2 — 4 ].

Microfluidics Soft lithography using polydimethylsiloxane is the most widely used method for creating nanoand microstructures with flow channels for cell cultures. The desired pattern is generated using computer-aided design software and the pattern is printed on to a mask.

A silicon wafer is coated with a photoresist, exposed to UV light through the mask and excess photoresist is washed off. Polydimethylsiloxane elastomer is poured on top of the mold, cured thermally and is peeled off, resulting in a segment with embossed microstructures.

The segment may be fused to a flat substrate such as microbial culture to yield microbial culture microchannels for cell culture and analysis.

Microscale microbial culture

Microarray The technologies that are used to print small molecules including DNA and proteins have been adapted to print cells at pico- to nanoliter volumes [ 5 ]. Typically, a contact or a noncontact robotic arrayer is used to print one or more types of cells at defined spatial and temporal patterns on chemically modified microbial culture surfaces.

The resulting array provides a microbial culture platform for high-throughput analysis of the behavior of microcolonies by microscopy.

Applications of microscale cell culture Diagnosis Currently, the selection of antimicrobials effective against infectious pathogens is performed by recovering, microbial culture and identifying the microorganism s from specimens such as wound swabs, exudates or blood, and then testing the susceptibility of these pathogens against various antibiotics using disk-diffusion or broth microdilution assay [ 5 ].

This assay typically takes 1—3 days, requires milliliter volumes of the sample, and requires a large enterprise for testing and analysis.

Types of Culture Media | Owlcation

Recently, microscale and microfluidic culture systems have substantially decreased the critical time window for analysis, sample volume, and may be performed at the point of care.

These microscale diagnostic techniques are at different stages of technical and commercial maturity and show great promise for rapid antimicrobial susceptibility testing. Drug discovery There is a dire need for new antimicrobials due to a rapid rise in drug resistance, emergence of unfamiliar diseases and pathogens, preference of narrow spectrum of activity to lessen the collateral damage or toxicity to the host [ 8 ].

Antimicrobial activity in a library of compounds is typically tested microbial culture Petri dishes, flasks or multiwell plates.

Below given are some types of important culture or growth media used in microbiological laboratories: Agar Plate with bacterial colonies The Preservation Culture Media Microbial culture is composed of all the basic nutrients required for a microbial growth and is used to preserve a specific type of microorganism, preferably bacteria or a set of different microbial entities for a long period of time.

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The basic purpose of this culture is to let these microorganisms grow safely in an ensured environment that has all the important nutrients microbial culture to protect them against any environmental damage so these organisms can be used when needed.

The Enrichment Culture Media This is a liquid medium which allows the microorganisms to multiply and has the essential nutrients that are required for it.

It is usually composed of bacteria taken from a liquid source such as pond water.


The basic nutrient broth is the most microbial culture used. Selective Media Plate Selective Culture Media This is a special type of media which allows the growth of certain microorganisms while inhibits the growth of the others.

After the desired level of growth is achieved, agar plates can be stored upside down in a refrigerator for an extended period of time to keep bacteria for future experiments.