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Team:TU Darmstadt/Notebook/Methods/Bacterial cell culture
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Revision as of 15:54, 16 October 2014
Bacterial cell culture
Equipment:
- Bunsen burner
- Pipettes with peleus ball
- Micropipettes with sterile tips
- Flow bench
Chemicals & consumables:
- Culture tubes with metal caps
- Growth medium: Media
- Parafilm
- Autoclaved glass pipette tubes
Procedure:
Starting culture:
Under sterile conditions add about 5mL (two fingers high) of medium to a culture tube and insert the picked colony.
Cultivate the stock on agar plate e.g. until colonies grow (incubation usually at 37°C)
Flame a glass pipette, open the bottle of medium and flame the mouth, measure out the amount you need to fill your tubes, flame the cap and recap the bottle as quickly as possible.
Remove the tube cap, flame the top of the culture tube, pipette in 5 ml, flame the top of the tube, and cap it.
Pick a single colony (to asure the cells are from the same single clonal population) and transfer it to the medium by tapping a small (0.1 µl) pipette tip (held on a pipette) on the surface of the plate.
Uncap a tube, flame the top, tip the tube so as to transfer cells from the pipette tip to the surface of the media without touching the inside of the tube with the non-sterile portion of the pipetter, flame, cap.
Pipette the desired amount of antibiotic into each tube along the wall. Do not put the non-sterile part of the pipette inside the tube and use a new tip for each tube.
Vortex each tube for 1-2 seconds to mix well.
Take the tubes to incubat (usually at 37°C) in an incubator or warm room.
Wait overnight or until your cells have reached the desired concentration.
