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Techniques for Isolation of Pure Cultures

Techniques for Isolation of Pure Cultures

Microorganisms are routinely cultured in the laboratory using various techniques to isolate, grow, and quantify them for further study. These methods rely on inoculating microorganisms into a suitable growth medium under aseptic conditions to prevent contamination. Depending on the objective, inoculation can involve direct transfer or the use of diluted bacterial suspensions as the inoculum.Streak-Plate Method for IsolationThe streak-plate method is a common technique for obtaining pure...

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Most vertebrate cells grow in vitro attached to a substrate as a monolayer, called adherent cultures. The flasks and plates used to grow cells are chemically treated to facilitate cell attachment. However, a few cell types, such as hematopoietic cells, can grow in a suspension. In contrast to adherent cultures, suspension cultures can grow in non-treated cultureware using magnetic stirrers or spinner flasks to agitate the culture media

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Related Experiment Video

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Cell Culture Techniques and Practices to Avoid Contamination by Fungi and Bacteria in the Research Cell Culture Laboratory

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Published on: July 7, 2023

Aseptic technique for cell culture.

¹Becton Dickinson Microbiology Systems, Sparks, Maryland, USA.

Current Protocols in Cell Biology

|January 30, 2008

Summary

This summary is machine-generated.

Prevent microbial contamination in cell cultures using aseptic techniques. This guide details environmental controls, personal hygiene, sterilization, and equipment like laminar-flow benches and biosafety cabinets for sterile cell culture.

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Area of Science:

Laboratory Science
Microbiology
Cell Culture Technology

Background:

Cell cultures are susceptible to microbial contamination, threatening experimental integrity.
Maintaining sterile conditions is crucial for reliable cell culture results.
Aseptic technique is fundamental for preventing contamination in laboratory settings.

Purpose of the Study:

To describe methods for preventing microbial contamination in laboratory cell cultures.
To provide a protocol for aseptic technique.
To detail the use of clean benches and biosafety cabinets.

Main Methods:

Implementing comprehensive aseptic technique protocols.
Ensuring environmental control and personal hygiene.
Utilizing sterile equipment and media, with quality control.
Employing horizontal laminar-flow clean benches and vertical laminar-flow biosafety cabinets.

Main Results:

Aseptic technique provides a framework for noncontaminating laboratory procedures.
Specific equipment, such as laminar-flow benches and biosafety cabinets, aids in maintaining sterile conditions.
Adherence to protocols minimizes microbial contamination risks in cell cultures.

Conclusions:

Effective aseptic technique is essential for successful cell culture.
Proper use of environmental controls and specialized equipment is key to preventing contamination.
This unit provides practical guidance for maintaining sterile cell cultures in a laboratory setting.